Fuel retention measurements in Alcator C-Mod using accelerator-based in situ materials surveillance
This paper presents the first in situ time- and space-resolved measurements of deuterium (D) fuel retention in plasma-facing component (PFC) surfaces using Accelerator-based In-situ Materials Surveillance (AIMS) on the Alcator C-Mod tokamak. AIMS is a novel in situ materials diagnostic technique bas...
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| Format: | Article |
| Language: | en_US |
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Elsevier
2017
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| Online Access: | http://hdl.handle.net/1721.1/111187 https://orcid.org/0000-0003-4248-7876 https://orcid.org/0000-0002-2110-6766 https://orcid.org/0000-0002-4003-6089 https://orcid.org/0000-0002-9001-5606 |
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| author | Lipschultz, Bruce Hartwig, Zachary Seth Barnard, Harold Salvadore Sorbom, Brandon Nils Lanza, Richard C Stahle, Peter W Whyte, Dennis G |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Lipschultz, Bruce Hartwig, Zachary Seth Barnard, Harold Salvadore Sorbom, Brandon Nils Lanza, Richard C Stahle, Peter W Whyte, Dennis G |
| author_sort | Lipschultz, Bruce |
| collection | MIT |
| description | This paper presents the first in situ time- and space-resolved measurements of deuterium (D) fuel retention in plasma-facing component (PFC) surfaces using Accelerator-based In-situ Materials Surveillance (AIMS) on the Alcator C-Mod tokamak. AIMS is a novel in situ materials diagnostic technique based on the spectroscopic analysis of nuclear reaction products induced in PFC surfaces using an ∼MeV beam of deuterons from a compact linear accelerator in between plasma shots. AIMS measurements of D retention on inner wall PFCs were acquired during diverted and limited plasma operations and during wall conditioning experiments. Intershot measurements demonstrate the local erosion and codeposition of boron films on PFC surfaces with a constant ratio D/B. This is consistent with previous results suggesting that D codeposition with boron is insufficient to account for the net retention observed in Alcator C-Mod. Changes in deuterium concentration during boronization, electron cyclotron and glow cleanings were also measured. |
| first_indexed | 2024-09-23T16:46:47Z |
| format | Article |
| id | mit-1721.1/111187 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:46:47Z |
| publishDate | 2017 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/1111872022-09-29T21:28:04Z Fuel retention measurements in Alcator C-Mod using accelerator-based in situ materials surveillance Lipschultz, Bruce Hartwig, Zachary Seth Barnard, Harold Salvadore Sorbom, Brandon Nils Lanza, Richard C Stahle, Peter W Whyte, Dennis G Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Massachusetts Institute of Technology. Plasma Science and Fusion Center Hartwig, Zachary Seth Barnard, Harold Salvadore Sorbom, Brandon Nils Lanza, Richard C Stahle, Peter W Whyte, Dennis G This paper presents the first in situ time- and space-resolved measurements of deuterium (D) fuel retention in plasma-facing component (PFC) surfaces using Accelerator-based In-situ Materials Surveillance (AIMS) on the Alcator C-Mod tokamak. AIMS is a novel in situ materials diagnostic technique based on the spectroscopic analysis of nuclear reaction products induced in PFC surfaces using an ∼MeV beam of deuterons from a compact linear accelerator in between plasma shots. AIMS measurements of D retention on inner wall PFCs were acquired during diverted and limited plasma operations and during wall conditioning experiments. Intershot measurements demonstrate the local erosion and codeposition of boron films on PFC surfaces with a constant ratio D/B. This is consistent with previous results suggesting that D codeposition with boron is insufficient to account for the net retention observed in Alcator C-Mod. Changes in deuterium concentration during boronization, electron cyclotron and glow cleanings were also measured. United States. Department of Energy (Grant DE-FG02-94ER54235) United States. Department of Energy (DE-FC02-99ER54512) 2017-09-13T15:25:10Z 2017-09-13T15:25:10Z 2014-09 Article http://purl.org/eprint/type/JournalArticle 0022-3115 http://hdl.handle.net/1721.1/111187 Hartwig, Zachary S. et al. “Fuel Retention Measurements in Alcator C-Mod Using Accelerator-Based in Situ Materials Surveillance.” Journal of Nuclear Materials 463 (August 2015): 73–77 © 2014 Elsevier B.V. https://orcid.org/0000-0003-4248-7876 https://orcid.org/0000-0002-2110-6766 https://orcid.org/0000-0002-4003-6089 https://orcid.org/0000-0002-9001-5606 en_US http://dx.doi.org/10.1016/j.jnucmat.2014.09.056 Journal of Nuclear Materials Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier MIT Web Domain |
| spellingShingle | Lipschultz, Bruce Hartwig, Zachary Seth Barnard, Harold Salvadore Sorbom, Brandon Nils Lanza, Richard C Stahle, Peter W Whyte, Dennis G Fuel retention measurements in Alcator C-Mod using accelerator-based in situ materials surveillance |
| title | Fuel retention measurements in Alcator C-Mod using accelerator-based in situ materials surveillance |
| title_full | Fuel retention measurements in Alcator C-Mod using accelerator-based in situ materials surveillance |
| title_fullStr | Fuel retention measurements in Alcator C-Mod using accelerator-based in situ materials surveillance |
| title_full_unstemmed | Fuel retention measurements in Alcator C-Mod using accelerator-based in situ materials surveillance |
| title_short | Fuel retention measurements in Alcator C-Mod using accelerator-based in situ materials surveillance |
| title_sort | fuel retention measurements in alcator c mod using accelerator based in situ materials surveillance |
| url | http://hdl.handle.net/1721.1/111187 https://orcid.org/0000-0003-4248-7876 https://orcid.org/0000-0002-2110-6766 https://orcid.org/0000-0002-4003-6089 https://orcid.org/0000-0002-9001-5606 |
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