- UKRI| RootDetect: Remote Detection and Precision Management of Root Health
R.A. Pitts; R.A. Pitts
Harvested from ORCID Public Data FileR.A. Pitts in OpenAIRE A. Loarte; T. Wauters; M. Dubrov; +27 AuthorsT. Wauters
Harvested from ORCID Public Data FileT. Wauters in OpenAIRE R.A. Pitts; R.A. Pitts
Harvested from ORCID Public Data FileR.A. Pitts in OpenAIRE A. Loarte; T. Wauters; M. Dubrov; Y. Gribov; F. Köchl;T. Wauters
Harvested from ORCID Public Data FileT. Wauters in OpenAIRE A. Pshenov; Y. Zhang;A. Pshenov
Harvested from ORCID Public Data FileA. Pshenov in OpenAIRE J. Artola; 
X. Bonnin; X. Bonnin
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesX. Bonnin in OpenAIRE L. Chen; M. Lehnen; K. Schmid;L. Chen
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesL. Chen in OpenAIRE R. Ding; R. Ding
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesR. Ding in OpenAIRE H. Frerichs; R. Futtersack; X. Gong; G. Hagelaar;H. Frerichs
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesH. Frerichs in OpenAIRE E. Hodille; E. Hodille
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesE. Hodille in OpenAIRE J. Hobirk; S. Krat; D. Matveev;J. Hobirk
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesJ. Hobirk in OpenAIRE K. Paschalidis; J. Qian;K. Paschalidis
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesK. Paschalidis in OpenAIRE S. Ratynskaia; S. Ratynskaia
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesS. Ratynskaia in OpenAIRE T. Rizzi; V. Rozhansky;T. Rizzi
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesT. Rizzi in OpenAIRE P. Tamain; P. Tamain
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesP. Tamain in OpenAIRE P. Tolias; L. Zhang; W. Zhang;Nuclear materials and energy 42, 101854 - (2025). doi:10.1016/j.nme.2024.101854 Published by Elsevier, Amsterdam [u.a.]
Access RoutesGreen gold 7 citations 7 popularity Average influence Average impulse Top 10% 
Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2024.101854&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - UKRI| RootDetect: Remote Detection and Precision Management of Root Health R.A. Pitts;
R.A. Pitts
Harvested from ORCID Public Data FileR.A. Pitts in OpenAIRE A. Loarte; T. Wauters; M. Dubrov; +27 AuthorsT. Wauters
Harvested from ORCID Public Data FileT. Wauters in OpenAIRE R.A. Pitts; R.A. Pitts
Harvested from ORCID Public Data FileR.A. Pitts in OpenAIRE A. Loarte; T. Wauters; M. Dubrov; Y. Gribov; F. Köchl;T. Wauters
Harvested from ORCID Public Data FileT. Wauters in OpenAIRE A. Pshenov; Y. Zhang;A. Pshenov
Harvested from ORCID Public Data FileA. Pshenov in OpenAIRE J. Artola; X. Bonnin; X. Bonnin
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesX. Bonnin in OpenAIRE L. Chen; M. Lehnen; K. Schmid;L. Chen
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesL. Chen in OpenAIRE R. Ding; R. Ding
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesR. Ding in OpenAIRE H. Frerichs; R. Futtersack; X. Gong; G. Hagelaar;H. Frerichs
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesH. Frerichs in OpenAIRE E. Hodille; E. Hodille
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesE. Hodille in OpenAIRE J. Hobirk; S. Krat; D. Matveev;J. Hobirk
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesJ. Hobirk in OpenAIRE K. Paschalidis; J. Qian;K. Paschalidis
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesK. Paschalidis in OpenAIRE S. Ratynskaia; S. Ratynskaia
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesS. Ratynskaia in OpenAIRE T. Rizzi; V. Rozhansky;T. Rizzi
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesT. Rizzi in OpenAIRE P. Tamain; P. Tamain
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesP. Tamain in OpenAIRE P. Tolias; L. Zhang; W. Zhang;Nuclear materials and energy 42, 101854 - (2025). doi:10.1016/j.nme.2024.101854 Published by Elsevier, Amsterdam [u.a.]
Access RoutesGreen gold 7 citations 7 popularity Average influence Average impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2024.101854&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusion Markelj, S.;
Markelj, S.
Harvested from ORCID Public Data FileMarkelj, S. in OpenAIRE Schwarz-Selinger, T.; Schwarz-Selinger, T.
Harvested from ORCID Public Data FileSchwarz-Selinger, T. in OpenAIRE Založnik, A.; Kelemen, M.; +4 AuthorsZaložnik, A.
Harvested from ORCID Public Data FileZaložnik, A. in OpenAIRE Markelj, S.; Markelj, S.
Harvested from ORCID Public Data FileMarkelj, S. in OpenAIRE Schwarz-Selinger, T.; Schwarz-Selinger, T.
Harvested from ORCID Public Data FileSchwarz-Selinger, T. in OpenAIRE Založnik, A.; Kelemen, M.;Založnik, A.
Harvested from ORCID Public Data FileZaložnik, A. in OpenAIRE Vavpetič, P.; Pelicon, P.;Vavpetič, P.
Harvested from ORCID Public Data FileVavpetič, P. in OpenAIRE Hodille, E.; Grisolia, C.;Hodille, E.
Harvested from ORCID Public Data FileHodille, E. in OpenAIREAbstractDeuterium retention was for the first time measured in tungsten samples simultaneously irradiated by W ions and exposed to D atoms at five different temperatures from 450K to 1000K. In order to obtain information on the defect concentration, samples were afterwards exposed to D atoms at 600K to populate the created defects. The results were compared to different sequential damaging/exposure experiments. Synergistic effects were observed, namely, higher D concentrations were found in the case of simultaneous damaging and D-atom loading as compared to sequential damaging at elevated temperatures and populating the defects afterwards. However, the deuterium retention is still lower as compared to sequential damaging at room temperature and post-damaging annealing. The observations are explained by stabilization of defects by the presence of solute hydrogen in the bulk that would annihilate at high temperatures without the presence of hydrogen. Results of simultaneous W-ion damaging and D exposure at elevated temperatures were also compared to a sequential experiment of W-ion damaging at room temperature and then D-atom loading at high temperatures showing that thermal D de-trapping dominates deuterium retention at high temperatures.
Access Routesgold 34 citations 34 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2016.11.010&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusion Markelj, S.;
Markelj, S.
Harvested from ORCID Public Data FileMarkelj, S. in OpenAIRE Schwarz-Selinger, T.; Schwarz-Selinger, T.
Harvested from ORCID Public Data FileSchwarz-Selinger, T. in OpenAIRE Založnik, A.; Kelemen, M.; +4 AuthorsZaložnik, A.
Harvested from ORCID Public Data FileZaložnik, A. in OpenAIRE Markelj, S.; Markelj, S.
Harvested from ORCID Public Data FileMarkelj, S. in OpenAIRE Schwarz-Selinger, T.; Schwarz-Selinger, T.
Harvested from ORCID Public Data FileSchwarz-Selinger, T. in OpenAIRE Založnik, A.; Kelemen, M.;Založnik, A.
Harvested from ORCID Public Data FileZaložnik, A. in OpenAIRE Vavpetič, P.; Pelicon, P.;Vavpetič, P.
Harvested from ORCID Public Data FileVavpetič, P. in OpenAIRE Hodille, E.; Grisolia, C.;Hodille, E.
Harvested from ORCID Public Data FileHodille, E. in OpenAIREAbstractDeuterium retention was for the first time measured in tungsten samples simultaneously irradiated by W ions and exposed to D atoms at five different temperatures from 450K to 1000K. In order to obtain information on the defect concentration, samples were afterwards exposed to D atoms at 600K to populate the created defects. The results were compared to different sequential damaging/exposure experiments. Synergistic effects were observed, namely, higher D concentrations were found in the case of simultaneous damaging and D-atom loading as compared to sequential damaging at elevated temperatures and populating the defects afterwards. However, the deuterium retention is still lower as compared to sequential damaging at room temperature and post-damaging annealing. The observations are explained by stabilization of defects by the presence of solute hydrogen in the bulk that would annihilate at high temperatures without the presence of hydrogen. Results of simultaneous W-ion damaging and D exposure at elevated temperatures were also compared to a sequential experiment of W-ion damaging at room temperature and then D-atom loading at high temperatures showing that thermal D de-trapping dominates deuterium retention at high temperatures.
Access Routesgold 34 citations 34 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2016.11.010&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusion Silva Solís, Yosvany;
Silva Solís, Yosvany
Harvested from ORCID Public Data FileSilva Solís, Yosvany in OpenAIRE Denis, Julien; Denis, Julien
Harvested from ORCID Public Data FileDenis, Julien in OpenAIRE Hodille, Etienne; Hodille, Etienne
Harvested from ORCID Public Data FileHodille, Etienne in OpenAIRE Ferro, Y.; Ferro, Y.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesFerro, Y. in OpenAIREITER divertor is built with tungsten monoblocks that contain a tungsten–copper interface. There, hydrogen isotopes could possibly accumulate leading to safety and mechanical issues. As a consequence, the tungsten–copper interface has to be modeled and characterized, which is here performed at the atomic-scale by means of density functional theory calculations. In order to build the model, we selected the tungsten and copper orientations that minimizes the mismatch between both networks; this results in the W(001)/Cubcc(001) and W(001)/Cufcc(001)R45° interfaces. After relaxation, both systems converge to the same Wbcc(001)/Cuhcp(112̄0) structure, which is consistent with previous experimental observations. Such reconstruction of the copper network has the effect of changing the charge density in the copper part of the interface, with possible effects on hydrogen interaction.
Access RoutesGreen gold 2 citations 2 popularity Average influence Top 10% impulse Average Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2023.101516&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusion Silva Solís, Yosvany;
Silva Solís, Yosvany
Harvested from ORCID Public Data FileSilva Solís, Yosvany in OpenAIRE Denis, Julien; Denis, Julien
Harvested from ORCID Public Data FileDenis, Julien in OpenAIRE Hodille, Etienne; Hodille, Etienne
Harvested from ORCID Public Data FileHodille, Etienne in OpenAIRE Ferro, Y.; Ferro, Y.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesFerro, Y. in OpenAIREITER divertor is built with tungsten monoblocks that contain a tungsten–copper interface. There, hydrogen isotopes could possibly accumulate leading to safety and mechanical issues. As a consequence, the tungsten–copper interface has to be modeled and characterized, which is here performed at the atomic-scale by means of density functional theory calculations. In order to build the model, we selected the tungsten and copper orientations that minimizes the mismatch between both networks; this results in the W(001)/Cubcc(001) and W(001)/Cufcc(001)R45° interfaces. After relaxation, both systems converge to the same Wbcc(001)/Cuhcp(112̄0) structure, which is consistent with previous experimental observations. Such reconstruction of the copper network has the effect of changing the charge density in the copper part of the interface, with possible effects on hydrogen interaction.
Access RoutesGreen gold 2 citations 2 popularity Average influence Top 10% impulse Average Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2023.101516&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusionTom Wauters; N. Fedorczak; S. Brezinsek; R. Nouailletas; +16 Authors
S. Brezinsek
Harvested from ORCID Public Data FileS. Brezinsek in OpenAIRETom Wauters; N. Fedorczak; S. Brezinsek; R. Nouailletas;S. Brezinsek
Harvested from ORCID Public Data FileS. Brezinsek in OpenAIRE Antti Hakola; T. Loarer;Antti Hakola
Harvested from ORCID Public Data FileAntti Hakola in OpenAIRE Jonathan Gaspar; Jonathan Gaspar
Harvested from ORCID Public Data FileJonathan Gaspar in OpenAIRE E. A. Hodille; J. Gunn;E. A. Hodille
Harvested from ORCID Public Data FileE. A. Hodille in OpenAIRE C. Reux; Régis Bisson; R. Sabot; S. Vartanian;Régis Bisson
Harvested from ORCID Public Data FileRégis Bisson in OpenAIRE E. Wang; J. Morales; West Team; B. Pégourié; A. Gallo; E. Tsitrone;E. Wang
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesE. Wang in OpenAIRE D. Douai; Threshold ionization mass spectrometry (TIMS) is one of two methods envisioned in ITER to quantify the helium (He) fusion product in the exhaust pumping lines during plasma discharges. We present the first demonstration of another potential application of TIMS in a tokamak environment, namely, the analysis of deuterium (D) and He outgassing following a plasma discharge i.e. during the post-discharge. This method has been tested with sub-second temporal resolution in WEST during its first He plasma discharges in the so-called He changeover experimental campaign. The calibration method of TIMS using a D plasma discharge is presented while the uncertainties related to TIMS during rapid pressure variations, i.e. upon plasma breakdown and plasma termination, are discussed. The first results obtained with TIMS during consecutive D and He plasma discharges in the full tungsten (W) tokamak WEST are reported. It is found that the time evolutions for He and D outgassing in the post-discharge are markedly different. On one hand, He outgassing is instantaneous and decays within 60 s until the He signal gets below detection level. On the other hand, D outgassing can reach a maximum up to several tens of seconds after the termination of the plasma and this outgassing can last for about 10 min. These striking differences should be related to different retention and outgassing from WEST plasma facing components, presently constituted of actively-cooled ITER-like W units and inertially cooled W-coated graphite. Potential mechanisms at the origin of the different outgassing behavior for D and He in W plasma facing components are discussed in light of a systematic analysis of the He and D gas balance and a macroscopic rate equation modeling of the D outgassing from the divertor strike points.
Access RoutesGreen gold 7 citations 7 popularity Top 10% influence Average impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2020.100885&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusionTom Wauters; N. Fedorczak; S. Brezinsek; R. Nouailletas; +16 Authors
S. Brezinsek
Harvested from ORCID Public Data FileS. Brezinsek in OpenAIRETom Wauters; N. Fedorczak; S. Brezinsek; R. Nouailletas;S. Brezinsek
Harvested from ORCID Public Data FileS. Brezinsek in OpenAIRE Antti Hakola; T. Loarer;Antti Hakola
Harvested from ORCID Public Data FileAntti Hakola in OpenAIRE Jonathan Gaspar; Jonathan Gaspar
Harvested from ORCID Public Data FileJonathan Gaspar in OpenAIRE E. A. Hodille; J. Gunn;E. A. Hodille
Harvested from ORCID Public Data FileE. A. Hodille in OpenAIRE C. Reux; Régis Bisson; R. Sabot; S. Vartanian;Régis Bisson
Harvested from ORCID Public Data FileRégis Bisson in OpenAIRE E. Wang; J. Morales; West Team; B. Pégourié; A. Gallo; E. Tsitrone;E. Wang
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesE. Wang in OpenAIRE D. Douai; Threshold ionization mass spectrometry (TIMS) is one of two methods envisioned in ITER to quantify the helium (He) fusion product in the exhaust pumping lines during plasma discharges. We present the first demonstration of another potential application of TIMS in a tokamak environment, namely, the analysis of deuterium (D) and He outgassing following a plasma discharge i.e. during the post-discharge. This method has been tested with sub-second temporal resolution in WEST during its first He plasma discharges in the so-called He changeover experimental campaign. The calibration method of TIMS using a D plasma discharge is presented while the uncertainties related to TIMS during rapid pressure variations, i.e. upon plasma breakdown and plasma termination, are discussed. The first results obtained with TIMS during consecutive D and He plasma discharges in the full tungsten (W) tokamak WEST are reported. It is found that the time evolutions for He and D outgassing in the post-discharge are markedly different. On one hand, He outgassing is instantaneous and decays within 60 s until the He signal gets below detection level. On the other hand, D outgassing can reach a maximum up to several tens of seconds after the termination of the plasma and this outgassing can last for about 10 min. These striking differences should be related to different retention and outgassing from WEST plasma facing components, presently constituted of actively-cooled ITER-like W units and inertially cooled W-coated graphite. Potential mechanisms at the origin of the different outgassing behavior for D and He in W plasma facing components are discussed in light of a systematic analysis of the He and D gas balance and a macroscopic rate equation modeling of the D outgassing from the divertor strike points.
Access RoutesGreen gold 7 citations 7 popularity Top 10% influence Average impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2020.100885&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusion ,ANR| WHeSCI ,EC| EUROfusion Delaporte-Mathurin, Rémi;
Delaporte-Mathurin, Rémi
Harvested from ORCID Public Data FileDelaporte-Mathurin, Rémi in OpenAIRE Hodille, Etienne; Hodille, Etienne
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesHodille, Etienne in OpenAIRE Mougenot, Jonathan; Mougenot, Jonathan
Harvested from ORCID Public Data FileMougenot, Jonathan in OpenAIRE Charles, Y.; +3 AuthorsCharles, Y.
Harvested from ORCID Public Data FileCharles, Y. in OpenAIRE Delaporte-Mathurin, Rémi; Delaporte-Mathurin, Rémi
Harvested from ORCID Public Data FileDelaporte-Mathurin, Rémi in OpenAIRE Hodille, Etienne; Hodille, Etienne
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesHodille, Etienne in OpenAIRE Mougenot, Jonathan; Mougenot, Jonathan
Harvested from ORCID Public Data FileMougenot, Jonathan in OpenAIRE Charles, Y.; Charles, Y.
Harvested from ORCID Public Data FileCharles, Y. in OpenAIRE de Temmerman, Gregory; Leblond, Floriane;de Temmerman, Gregory
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesde Temmerman, Gregory in OpenAIRE Grisolia, Christian; Grisolia, Christian
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesGrisolia, Christian in OpenAIREA novel identification technique of hydrogen transport parameters using FESTIM (Finite Element Simulation of Tritium In Materials) has been demonstrated. FESTIM is a finite element code developed with FEniCS performing hydrogen transport simulations. The trapping parameters (detrapping energies and trap densities) are identified for various materials (Tungsten, Aluminium, EUROFER and Beryllium) by automatically reproducing thermo-desorption experiments. Several optimisation algorithms are tested and the Nelder–Mead algorithm shows the best efficiency. An optimisation test problem with five free parameters took only a few hours to solve whereas optimisation cases with two free parameters took a few minutes. Limitations of this technique are shown and discussed.
Access RoutesGreen gold 8 citations 8 popularity Top 10% influence Average impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2021.100984&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusion ,ANR| WHeSCI ,EC| EUROfusion Delaporte-Mathurin, Rémi;
Delaporte-Mathurin, Rémi
Harvested from ORCID Public Data FileDelaporte-Mathurin, Rémi in OpenAIRE Hodille, Etienne; Hodille, Etienne
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesHodille, Etienne in OpenAIRE Mougenot, Jonathan; Mougenot, Jonathan
Harvested from ORCID Public Data FileMougenot, Jonathan in OpenAIRE Charles, Y.; +3 AuthorsCharles, Y.
Harvested from ORCID Public Data FileCharles, Y. in OpenAIRE Delaporte-Mathurin, Rémi; Delaporte-Mathurin, Rémi
Harvested from ORCID Public Data FileDelaporte-Mathurin, Rémi in OpenAIRE Hodille, Etienne; Hodille, Etienne
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesHodille, Etienne in OpenAIRE Mougenot, Jonathan; Mougenot, Jonathan
Harvested from ORCID Public Data FileMougenot, Jonathan in OpenAIRE Charles, Y.; Charles, Y.
Harvested from ORCID Public Data FileCharles, Y. in OpenAIRE de Temmerman, Gregory; Leblond, Floriane;de Temmerman, Gregory
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesde Temmerman, Gregory in OpenAIRE Grisolia, Christian; Grisolia, Christian
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesGrisolia, Christian in OpenAIREA novel identification technique of hydrogen transport parameters using FESTIM (Finite Element Simulation of Tritium In Materials) has been demonstrated. FESTIM is a finite element code developed with FEniCS performing hydrogen transport simulations. The trapping parameters (detrapping energies and trap densities) are identified for various materials (Tungsten, Aluminium, EUROFER and Beryllium) by automatically reproducing thermo-desorption experiments. Several optimisation algorithms are tested and the Nelder–Mead algorithm shows the best efficiency. An optimisation test problem with five free parameters took only a few hours to solve whereas optimisation cases with two free parameters took a few minutes. Limitations of this technique are shown and discussed.
Access RoutesGreen gold 8 citations 8 popularity Top 10% influence Average impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2021.100984&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusion Bernard, E.;
Bernard, E.
Harvested from ORCID Public Data FileBernard, E. in OpenAIRE Sakamoto, R.; Sakamoto, R.
Harvested from ORCID Public Data FileSakamoto, R. in OpenAIRE Hodille, E.; Hodille, E.
Harvested from ORCID Public Data FileHodille, E. in OpenAIRE Kreter, A.; +19 AuthorsKreter, A.
Harvested from ORCID Public Data FileKreter, A. in OpenAIRE Bernard, E.; Bernard, E.
Harvested from ORCID Public Data FileBernard, E. in OpenAIRE Sakamoto, R.; Sakamoto, R.
Harvested from ORCID Public Data FileSakamoto, R. in OpenAIRE Hodille, E.; Hodille, E.
Harvested from ORCID Public Data FileHodille, E. in OpenAIRE Kreter, A.; Autissier, E.;Kreter, A.
Harvested from ORCID Public Data FileKreter, A. in OpenAIRE Barthe, M.-F.; Barthe, M.-F.
Harvested from ORCID Public Data FileBarthe, M.-F. in OpenAIRE Desgardin, P.; Desgardin, P.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesDesgardin, P. in OpenAIRE Schwarz-Selinger, T.; Schwarz-Selinger, T.
Harvested from ORCID Public Data FileSchwarz-Selinger, T. in OpenAIRE Burwitz, V.; Feuillastre, S.; Garcia-Argote, S.; Pieters, G.; Rousseau, B.;Burwitz, V.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesBurwitz, V. in OpenAIRE Ialovega, M.; Ialovega, M.
Harvested from ORCID Public Data FileIalovega, M. in OpenAIRE Bisson, R.; Ghiorghiu, F.; Corr, C.;Bisson, R.
Harvested from ORCID Public Data FileBisson, R. in OpenAIRE Thompson, M.; Doerner, R.;Thompson, M.
Harvested from ORCID Public Data FileThompson, M. in OpenAIRE Markelj, S.; Yamada, H.; Yoshida, N.;Markelj, S.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesMarkelj, S. in OpenAIRE Grisolia, C.; Grisolia, C.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesGrisolia, C. in OpenAIREPlasma-facing materials for next generation fusion devices, like ITER and DEMO, will be submitted to intense fluxes of light elements, notably He and H isotopes (HI). Our study focuses on tritium (T) retention on a wide range of W samples: first, different types of W materials were investigated to distinguish the impact of the pristine original structure on the retention, from W-coated samples to ITER-grade pure W samples submitted to various annealing and manufacturing procedures, along with monocrystalline W for reference. Then, He and He-D irradiated W samples were studied to investigate the impact on He-damages such as nano-bubbles (exposures in LHD or PSI-2) on T retention.We exposed all the samples to tritium gas-loading using a gentle technique preventing any introduction of new damage in the material. Tritium desorption is measured by Liquid Scintillation counting (LSC) at ambient and high temperatures (800 °C). The remaining T inventory is then measured by sample full dissolution and LSC. Results on T inventory on He exposed samples highlighted that in all cases, tritium desorption as a gas (HT) increases significantly due to the formation of He damages. Up to 1.8 times more T can be trapped in the material through a competition of various mechanisms, but the major part of the inventory desorbs at room temperature, and so will most likely not take part to the long-term trapped inventory for safety and operational perspectives. Unfortunately, investigation of “as received” industrial W (used for the making of plasma-facing materials) highlighted a strong impact of the pre existing defects on T retention: up to 2.5 times more T is trapped in “as received W” compared to annealed and polish W, and desorbs only at 800 °C, meaning ideal W material studies may underestimate T inventory for tokamak relevant conditions. Keywords: Tungsten, Helium, Tritium inventory, Plasma-wall interactions
Access RoutesGreen gold 23 citations 23 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2019.03.005&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusion Bernard, E.;
Bernard, E.
Harvested from ORCID Public Data FileBernard, E. in OpenAIRE Sakamoto, R.; Sakamoto, R.
Harvested from ORCID Public Data FileSakamoto, R. in OpenAIRE Hodille, E.; Hodille, E.
Harvested from ORCID Public Data FileHodille, E. in OpenAIRE Kreter, A.; +19 AuthorsKreter, A.
Harvested from ORCID Public Data FileKreter, A. in OpenAIRE Bernard, E.; Bernard, E.
Harvested from ORCID Public Data FileBernard, E. in OpenAIRE Sakamoto, R.; Sakamoto, R.
Harvested from ORCID Public Data FileSakamoto, R. in OpenAIRE Hodille, E.; Hodille, E.
Harvested from ORCID Public Data FileHodille, E. in OpenAIRE Kreter, A.; Autissier, E.;Kreter, A.
Harvested from ORCID Public Data FileKreter, A. in OpenAIRE Barthe, M.-F.; Barthe, M.-F.
Harvested from ORCID Public Data FileBarthe, M.-F. in OpenAIRE Desgardin, P.; Desgardin, P.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesDesgardin, P. in OpenAIRE Schwarz-Selinger, T.; Schwarz-Selinger, T.
Harvested from ORCID Public Data FileSchwarz-Selinger, T. in OpenAIRE Burwitz, V.; Feuillastre, S.; Garcia-Argote, S.; Pieters, G.; Rousseau, B.;Burwitz, V.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesBurwitz, V. in OpenAIRE Ialovega, M.; Ialovega, M.
Harvested from ORCID Public Data FileIalovega, M. in OpenAIRE Bisson, R.; Ghiorghiu, F.; Corr, C.;Bisson, R.
Harvested from ORCID Public Data FileBisson, R. in OpenAIRE Thompson, M.; Doerner, R.;Thompson, M.
Harvested from ORCID Public Data FileThompson, M. in OpenAIRE Markelj, S.; Yamada, H.; Yoshida, N.;Markelj, S.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesMarkelj, S. in OpenAIRE Grisolia, C.; Grisolia, C.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesGrisolia, C. in OpenAIREPlasma-facing materials for next generation fusion devices, like ITER and DEMO, will be submitted to intense fluxes of light elements, notably He and H isotopes (HI). Our study focuses on tritium (T) retention on a wide range of W samples: first, different types of W materials were investigated to distinguish the impact of the pristine original structure on the retention, from W-coated samples to ITER-grade pure W samples submitted to various annealing and manufacturing procedures, along with monocrystalline W for reference. Then, He and He-D irradiated W samples were studied to investigate the impact on He-damages such as nano-bubbles (exposures in LHD or PSI-2) on T retention.We exposed all the samples to tritium gas-loading using a gentle technique preventing any introduction of new damage in the material. Tritium desorption is measured by Liquid Scintillation counting (LSC) at ambient and high temperatures (800 °C). The remaining T inventory is then measured by sample full dissolution and LSC. Results on T inventory on He exposed samples highlighted that in all cases, tritium desorption as a gas (HT) increases significantly due to the formation of He damages. Up to 1.8 times more T can be trapped in the material through a competition of various mechanisms, but the major part of the inventory desorbs at room temperature, and so will most likely not take part to the long-term trapped inventory for safety and operational perspectives. Unfortunately, investigation of “as received” industrial W (used for the making of plasma-facing materials) highlighted a strong impact of the pre existing defects on T retention: up to 2.5 times more T is trapped in “as received W” compared to annealed and polish W, and desorbs only at 800 °C, meaning ideal W material studies may underestimate T inventory for tokamak relevant conditions. Keywords: Tungsten, Helium, Tritium inventory, Plasma-wall interactions
Access RoutesGreen gold 23 citations 23 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2019.03.005&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusion Ciraolo, G.;
Ciraolo, G.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesCiraolo, G. in OpenAIRE Bufferand, H.; Bucalossi, J.; Ghendrih, Ph.; +15 AuthorsBufferand, H.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesBufferand, H. in OpenAIRE Ciraolo, G.; Ciraolo, G.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesCiraolo, G. in OpenAIRE Bufferand, H.; Bucalossi, J.; Ghendrih, Ph.;Bufferand, H.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesBufferand, H. in OpenAIRE Tamain, P.; Tamain, P.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesTamain, P. in OpenAIRE Marandet, Y.; Valentinuzzi, M.;Marandet, Y.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesMarandet, Y. in OpenAIRE Denis, Julien; Fedorczak, N.;Denis, Julien
Harvested from ORCID Public Data FileDenis, Julien in OpenAIRE Hodille, Etienne; Mellet, N.; Pégourié, B.;Hodille, Etienne
Harvested from ORCID Public Data FileHodille, Etienne in OpenAIRE Grisolia, C.; Grisolia, C.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesGrisolia, C. in OpenAIRE Bourdelle, C.; Tsitrone, E.; Galassi, Davide; Leybros, R.;Bourdelle, C.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesBourdelle, C. in OpenAIRE Giorgiani, Giorgio; Giorgiani, Giorgio
Harvested from ORCID Public Data FileGiorgiani, Giorgio in OpenAIRE Serre, Eric; Serre, Eric
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesSerre, Eric in OpenAIRESimulations of WEST H-mode divertor scenarios have been performed with SOLEDGE2D-EIRENE edge plasma transport code, both for pure deuterium and nitrogen seeded discharge. In the pure deuterium case, a target heat flux of 8 MW/m2 is reached, but misalignment between heat and the particle outflux yields 50 eV plasma temperature at the target plates. With nitrogen seeding, the heat and particle outflux are observed to be aligned so that lower plasma temperatures at the target plates are achieved together with the required high heat fluxes. This change in heat and particle outflux alignment is analysed with respect to the role of divertor geometry and the impact of vertical vs horizontal target plates on neutrals spreading. PACS: 52.65.Kj, 52.40.Hf, 52.40.Kh, 52.25.Ya
Access Routesgold 8 citations 8 popularity Average influence Average impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2016.12.025&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusion Ciraolo, G.;
Ciraolo, G.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesCiraolo, G. in OpenAIRE Bufferand, H.; Bucalossi, J.; Ghendrih, Ph.; +15 AuthorsBufferand, H.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesBufferand, H. in OpenAIRE Ciraolo, G.; Ciraolo, G.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesCiraolo, G. in OpenAIRE Bufferand, H.; Bucalossi, J.; Ghendrih, Ph.;Bufferand, H.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesBufferand, H. in OpenAIRE Tamain, P.; Tamain, P.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesTamain, P. in OpenAIRE Marandet, Y.; Valentinuzzi, M.;Marandet, Y.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesMarandet, Y. in OpenAIRE Denis, Julien; Fedorczak, N.;Denis, Julien
Harvested from ORCID Public Data FileDenis, Julien in OpenAIRE Hodille, Etienne; Mellet, N.; Pégourié, B.;Hodille, Etienne
Harvested from ORCID Public Data FileHodille, Etienne in OpenAIRE Grisolia, C.; Grisolia, C.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesGrisolia, C. in OpenAIRE Bourdelle, C.; Tsitrone, E.; Galassi, Davide; Leybros, R.;Bourdelle, C.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesBourdelle, C. in OpenAIRE Giorgiani, Giorgio; Giorgiani, Giorgio
Harvested from ORCID Public Data FileGiorgiani, Giorgio in OpenAIRE Serre, Eric; Serre, Eric
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesSerre, Eric in OpenAIRESimulations of WEST H-mode divertor scenarios have been performed with SOLEDGE2D-EIRENE edge plasma transport code, both for pure deuterium and nitrogen seeded discharge. In the pure deuterium case, a target heat flux of 8 MW/m2 is reached, but misalignment between heat and the particle outflux yields 50 eV plasma temperature at the target plates. With nitrogen seeding, the heat and particle outflux are observed to be aligned so that lower plasma temperatures at the target plates are achieved together with the required high heat fluxes. This change in heat and particle outflux alignment is analysed with respect to the role of divertor geometry and the impact of vertical vs horizontal target plates on neutrals spreading. PACS: 52.65.Kj, 52.40.Hf, 52.40.Kh, 52.25.Ya
Access Routesgold 8 citations 8 popularity Average influence Average impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2016.12.025&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusion ,EC| EUROfusion Montupet-Leblond, F.;
Montupet-Leblond, F.
Harvested from ORCID Public Data FileMontupet-Leblond, F. in OpenAIRE Corso, L.; Payet, M.; Delaporte-Mathurin, Rémi; +6 AuthorsDelaporte-Mathurin, Rémi
Harvested from ORCID Public Data FileDelaporte-Mathurin, Rémi in OpenAIRE Montupet-Leblond, F.; Montupet-Leblond, F.
Harvested from ORCID Public Data FileMontupet-Leblond, F. in OpenAIRE Corso, L.; Payet, M.; Delaporte-Mathurin, Rémi; Delaporte-Mathurin, Rémi
Harvested from ORCID Public Data FileDelaporte-Mathurin, Rémi in OpenAIRE Bernard, E.; Bernard, E.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesBernard, E. in OpenAIRE Charles, Y.; Charles, Y.
Harvested from ORCID Public Data FileCharles, Y. in OpenAIRE Mougenot, J.; Vartanian, S.;Mougenot, J.
Harvested from ORCID Public Data FileMougenot, J. in OpenAIRE Hodille, E.A.; Hodille, E.A.
Harvested from ORCID Public Data FileHodille, E.A. in OpenAIRE Grisolia, C.; Grisolia, C.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesGrisolia, C. in OpenAIREDiffusion and trapping of hydrogen isotopes in fusion materials need to be fully described in order to evaluate permeation and retention in fusion reactors walls and breeding blankets. Hydrogen gas permeation experiments have been conducted on Eurofer97 with pressures ranging from 101to 105Pa and temperatures between 473 K and 673 K, resulting in solubility K(T) (mol m−3 Pa−12)= 1.76⋅10−1exp(−0.27(eV)kBT), diffusivity D(T) (m2 s−1) =2.52⋅10−7exp(−0.16(eV)kBT)and permeability Φ(T) (mol m−1 Pa−12s−1) =4.43⋅10−8exp(−0.43(eV)kBT). Trapping parameters have been investigated using thermal desorption spectrometry of deuterium-loaded samples coupled with parametric optimization, leading to detrapping energies Edt,1=0.51eV, Edt,2=1.27eV, Edt,3=1.65eVand densities Nt,1=6.01⋅1025 m−3, Nt,2=6.44⋅1022 m−3, Nt,3=3.88⋅1023 m−3. This parametric optimization is performed using a kinetic surface model: the contribution of this model is compared to the results given by solubility and recombination rate models.
Access RoutesGreen gold 6 citations 6 popularity Top 10% influence Average impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2021.101062&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusion ,EC| EUROfusion Montupet-Leblond, F.;
Montupet-Leblond, F.
Harvested from ORCID Public Data FileMontupet-Leblond, F. in OpenAIRE Corso, L.; Payet, M.; Delaporte-Mathurin, Rémi; +6 AuthorsDelaporte-Mathurin, Rémi
Harvested from ORCID Public Data FileDelaporte-Mathurin, Rémi in OpenAIRE Montupet-Leblond, F.; Montupet-Leblond, F.
Harvested from ORCID Public Data FileMontupet-Leblond, F. in OpenAIRE Corso, L.; Payet, M.; Delaporte-Mathurin, Rémi; Delaporte-Mathurin, Rémi
Harvested from ORCID Public Data FileDelaporte-Mathurin, Rémi in OpenAIRE Bernard, E.; Bernard, E.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesBernard, E. in OpenAIRE Charles, Y.; Charles, Y.
Harvested from ORCID Public Data FileCharles, Y. in OpenAIRE Mougenot, J.; Vartanian, S.;Mougenot, J.
Harvested from ORCID Public Data FileMougenot, J. in OpenAIRE Hodille, E.A.; Hodille, E.A.
Harvested from ORCID Public Data FileHodille, E.A. in OpenAIRE Grisolia, C.; Grisolia, C.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesGrisolia, C. in OpenAIREDiffusion and trapping of hydrogen isotopes in fusion materials need to be fully described in order to evaluate permeation and retention in fusion reactors walls and breeding blankets. Hydrogen gas permeation experiments have been conducted on Eurofer97 with pressures ranging from 101to 105Pa and temperatures between 473 K and 673 K, resulting in solubility K(T) (mol m−3 Pa−12)= 1.76⋅10−1exp(−0.27(eV)kBT), diffusivity D(T) (m2 s−1) =2.52⋅10−7exp(−0.16(eV)kBT)and permeability Φ(T) (mol m−1 Pa−12s−1) =4.43⋅10−8exp(−0.43(eV)kBT). Trapping parameters have been investigated using thermal desorption spectrometry of deuterium-loaded samples coupled with parametric optimization, leading to detrapping energies Edt,1=0.51eV, Edt,2=1.27eV, Edt,3=1.65eVand densities Nt,1=6.01⋅1025 m−3, Nt,2=6.44⋅1022 m−3, Nt,3=3.88⋅1023 m−3. This parametric optimization is performed using a kinetic surface model: the contribution of this model is compared to the results given by solubility and recombination rate models.
Access RoutesGreen gold 6 citations 6 popularity Top 10% influence Average impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2021.101062&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusion Delaporte-Mathurin, Rémi;
Delaporte-Mathurin, Rémi
Harvested from ORCID Public Data FileDelaporte-Mathurin, Rémi in OpenAIRE Hodille, Etienne; Hodille, Etienne
Harvested from ORCID Public Data FileHodille, Etienne in OpenAIRE Mougenot, Jonathan; Mougenot, Jonathan
Harvested from ORCID Public Data FileMougenot, Jonathan in OpenAIRE Charles, Y.; +1 AuthorsCharles, Y.
Harvested from ORCID Public Data FileCharles, Y. in OpenAIRE Delaporte-Mathurin, Rémi; Delaporte-Mathurin, Rémi
Harvested from ORCID Public Data FileDelaporte-Mathurin, Rémi in OpenAIRE Hodille, Etienne; Hodille, Etienne
Harvested from ORCID Public Data FileHodille, Etienne in OpenAIRE Mougenot, Jonathan; Mougenot, Jonathan
Harvested from ORCID Public Data FileMougenot, Jonathan in OpenAIRE Charles, Y.; Charles, Y.
Harvested from ORCID Public Data FileCharles, Y. in OpenAIRE Grisolia, Christian; Grisolia, Christian
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesGrisolia, Christian in OpenAIREThe behaviour of hydrogen isotopes in ITER monoblocks was studied using the code FESTIM (Finite Element Simulation of Tritium In Materials) which is introduced in this publication. FESTIM has been validated by reproducing experimental data and the Method of Manufactured Solutions was used for analytical verification. Following relevant plasma scenarios, both transient heat transfer and hydrogen isotopes (HIs) diffusion have been simulated in order to assess HIs retention in monoblocks. Relevant materials properties have been used. Each plasma cycle is composed of a current ramp up, a current plateau, a current ramp down and a resting phase before the following shot. 100 cycles are simulated. The total HIs inventory in the tokamak during resting phases reaches 1.8×10−3mg whereas during the implantation phases it keeps increasing as a power law of time. Particle flux on the cooling channel of the monoblock is also computed. The breakthrough time is estimated to be t=1×105s which corresponds to 24 cycles. Relevance of 2D modelling has been demonstrated by comparing the total HIs inventory obtained by 2D and 1D simulations. Using 1D simulations, a relative error is observed compared to 2D simulations which can reach -25% during the resting phase. The error during implantation phases keeps increasing. Keywords: Fusion, Tritium, Finite elements, Plasma facing components, Hydrogen isotopes
Access RoutesGreen gold 20 citations 20 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2019.100709&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusion Delaporte-Mathurin, Rémi;
Delaporte-Mathurin, Rémi
Harvested from ORCID Public Data FileDelaporte-Mathurin, Rémi in OpenAIRE Hodille, Etienne; Hodille, Etienne
Harvested from ORCID Public Data FileHodille, Etienne in OpenAIRE Mougenot, Jonathan; Mougenot, Jonathan
Harvested from ORCID Public Data FileMougenot, Jonathan in OpenAIRE Charles, Y.; +1 AuthorsCharles, Y.
Harvested from ORCID Public Data FileCharles, Y. in OpenAIRE Delaporte-Mathurin, Rémi; Delaporte-Mathurin, Rémi
Harvested from ORCID Public Data FileDelaporte-Mathurin, Rémi in OpenAIRE Hodille, Etienne; Hodille, Etienne
Harvested from ORCID Public Data FileHodille, Etienne in OpenAIRE Mougenot, Jonathan; Mougenot, Jonathan
Harvested from ORCID Public Data FileMougenot, Jonathan in OpenAIRE Charles, Y.; Charles, Y.
Harvested from ORCID Public Data FileCharles, Y. in OpenAIRE Grisolia, Christian; Grisolia, Christian
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesGrisolia, Christian in OpenAIREThe behaviour of hydrogen isotopes in ITER monoblocks was studied using the code FESTIM (Finite Element Simulation of Tritium In Materials) which is introduced in this publication. FESTIM has been validated by reproducing experimental data and the Method of Manufactured Solutions was used for analytical verification. Following relevant plasma scenarios, both transient heat transfer and hydrogen isotopes (HIs) diffusion have been simulated in order to assess HIs retention in monoblocks. Relevant materials properties have been used. Each plasma cycle is composed of a current ramp up, a current plateau, a current ramp down and a resting phase before the following shot. 100 cycles are simulated. The total HIs inventory in the tokamak during resting phases reaches 1.8×10−3mg whereas during the implantation phases it keeps increasing as a power law of time. Particle flux on the cooling channel of the monoblock is also computed. The breakthrough time is estimated to be t=1×105s which corresponds to 24 cycles. Relevance of 2D modelling has been demonstrated by comparing the total HIs inventory obtained by 2D and 1D simulations. Using 1D simulations, a relative error is observed compared to 2D simulations which can reach -25% during the resting phase. The error during implantation phases keeps increasing. Keywords: Fusion, Tritium, Finite elements, Plasma facing components, Hydrogen isotopes
Access RoutesGreen gold 20 citations 20 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2019.100709&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusionKumar, M.; Makepeace, C.; Pardanaud, C.;
Pardanaud, C.
Harvested from ORCID Public Data FilePardanaud, C. in OpenAIRE Ferro, Y.; +14 AuthorsFerro, Y.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesFerro, Y. in OpenAIREKumar, M.; Makepeace, C.; Pardanaud, C.; Pardanaud, C.
Harvested from ORCID Public Data FilePardanaud, C. in OpenAIRE Ferro, Y.; Ferro, Y.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesFerro, Y. in OpenAIRE Hodille, E.; Hodille, E.
Harvested from ORCID Public Data FileHodille, E. in OpenAIRE Martin, C.; Roubin, P.;Martin, C.
Harvested from ORCID Public Data FileMartin, C. in OpenAIRE Widdowson, A.; Widdowson, A.
Harvested from ORCID Public Data FileWiddowson, A. in OpenAIRE Dittmar, T.; Dittmar, T.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesDittmar, T. in OpenAIRE Linsmeier, C. h.; Lungu, C. P.;Linsmeier, C. h.
Harvested from ORCID Public Data FileLinsmeier, C. h. in OpenAIRE Porosnicu, C.; Porosnicu, C.
Harvested from ORCID Public Data FilePorosnicu, C. in OpenAIRE Jepu, I.; Dinca, P.; Lungu, M.; Pompilian, O. G.; Subba, F.; JET contributors;Beryllium oxide (BeO) and deuteroxide (BeOxDy) have been found on the melted zone of a beryllium tile extracted from the upper dump plate of JET-ILW (2011-2012 campaign). Results have been obtained using Raman microscopy, which is sensitive to both the chemical bond and crystal structure, with a micrometric lateral resolution. BeO is found with a wurtzite crystal structure. BeOxDy is found as three different types which are not the beta-phase but behaves as molecular species like Be(OD)(2), O(Be-D)(2) and DBeOD. The presence of a small amount of trapped D2O is also suspected. Our results therefore strongly suggest that D trapping occurs after melting through the formation of deuteroxides. The temperature increase favors the formation of crystal BeO which favors deuterium trapping through OD bonding. EURATOM 633053
Access RoutesGreen gold 21 citations 21 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2018.11.008&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - EC| EUROfusionKumar, M.; Makepeace, C.; Pardanaud, C.;
Pardanaud, C.
Harvested from ORCID Public Data FilePardanaud, C. in OpenAIRE Ferro, Y.; +14 AuthorsFerro, Y.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesFerro, Y. in OpenAIREKumar, M.; Makepeace, C.; Pardanaud, C.; Pardanaud, C.
Harvested from ORCID Public Data FilePardanaud, C. in OpenAIRE Ferro, Y.; Ferro, Y.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesFerro, Y. in OpenAIRE Hodille, E.; Hodille, E.
Harvested from ORCID Public Data FileHodille, E. in OpenAIRE Martin, C.; Roubin, P.;Martin, C.
Harvested from ORCID Public Data FileMartin, C. in OpenAIRE Widdowson, A.; Widdowson, A.
Harvested from ORCID Public Data FileWiddowson, A. in OpenAIRE Dittmar, T.; Dittmar, T.
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesDittmar, T. in OpenAIRE Linsmeier, C. h.; Lungu, C. P.;Linsmeier, C. h.
Harvested from ORCID Public Data FileLinsmeier, C. h. in OpenAIRE Porosnicu, C.; Porosnicu, C.
Harvested from ORCID Public Data FilePorosnicu, C. in OpenAIRE Jepu, I.; Dinca, P.; Lungu, M.; Pompilian, O. G.; Subba, F.; JET contributors;Beryllium oxide (BeO) and deuteroxide (BeOxDy) have been found on the melted zone of a beryllium tile extracted from the upper dump plate of JET-ILW (2011-2012 campaign). Results have been obtained using Raman microscopy, which is sensitive to both the chemical bond and crystal structure, with a micrometric lateral resolution. BeO is found with a wurtzite crystal structure. BeOxDy is found as three different types which are not the beta-phase but behaves as molecular species like Be(OD)(2), O(Be-D)(2) and DBeOD. The presence of a small amount of trapped D2O is also suspected. Our results therefore strongly suggest that D trapping occurs after melting through the formation of deuteroxides. The temperature increase favors the formation of crystal BeO which favors deuterium trapping through OD bonding. EURATOM 633053
Access RoutesGreen gold 21 citations 21 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nme.2018.11.008&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu
