Vacuum System and Modeling for the Materials Plasma Exposure Experiment
Abstract
Understanding the science of plasma-material interactions (PMI) is essential for the future development of fusion facilities. The design of divertors and first walls for the next generation of long-pulse fusion facilities, such as a Fusion Nuclear Science Facility (FNSF) or a DEMO, requires significant PMI research and development. In order to meet this need, a new linear plasma facility, the Materials Plasma Exposure Experiment (MPEX) is proposed, which will produce divertor relevant plasma conditions for these next generation facilities. The device will be capable of handling low activation irradiated samples and be able to remove and replace samples without breaking vacuum. A Target Exchange Chamber (TEC) which can be disconnected from the high field environment in order to perform in-situ diagnostics is planned for the facility as well. The vacuum system for MPEX must be carefully designed in order to meet the requirements of the different heating systems, and to provide conditions at the target similar to those expected in a divertor. An automated coupling-decoupling (“autocoupler”) system is designed to create a high vacuum seal, and will allow the TEC to be disconnected without breaking vacuum in either the TEC or the primary plasma materials interaction chamber. This autocoupler, whichmore »
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1399921
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Fusion Science and Technology
- Additional Journal Information:
- Journal Volume: 72; Journal Issue: 4; Journal ID: ISSN 1536-1055
- Publisher:
- American Nuclear Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Lumsdaine, Arnold, Meitner, Steve, Graves, Van, Bradley, Craig, Stone, Chris, Lessard, Timothy, McGinnis, Dean, Rapp, Juergen, Bjorholm, Tom, Duckworth, Robert, and Varma, Venugopal. Vacuum System and Modeling for the Materials Plasma Exposure Experiment. United States: N. p., 2017.
Web. doi:10.1080/15361055.2017.1347466.
Lumsdaine, Arnold, Meitner, Steve, Graves, Van, Bradley, Craig, Stone, Chris, Lessard, Timothy, McGinnis, Dean, Rapp, Juergen, Bjorholm, Tom, Duckworth, Robert, & Varma, Venugopal. Vacuum System and Modeling for the Materials Plasma Exposure Experiment. United States. https://doi.org/10.1080/15361055.2017.1347466
Lumsdaine, Arnold, Meitner, Steve, Graves, Van, Bradley, Craig, Stone, Chris, Lessard, Timothy, McGinnis, Dean, Rapp, Juergen, Bjorholm, Tom, Duckworth, Robert, and Varma, Venugopal. Mon .
"Vacuum System and Modeling for the Materials Plasma Exposure Experiment". United States. https://doi.org/10.1080/15361055.2017.1347466. https://www.osti.gov/servlets/purl/1399921.
@article{osti_1399921,
title = {Vacuum System and Modeling for the Materials Plasma Exposure Experiment},
author = {Lumsdaine, Arnold and Meitner, Steve and Graves, Van and Bradley, Craig and Stone, Chris and Lessard, Timothy and McGinnis, Dean and Rapp, Juergen and Bjorholm, Tom and Duckworth, Robert and Varma, Venugopal},
abstractNote = {Understanding the science of plasma-material interactions (PMI) is essential for the future development of fusion facilities. The design of divertors and first walls for the next generation of long-pulse fusion facilities, such as a Fusion Nuclear Science Facility (FNSF) or a DEMO, requires significant PMI research and development. In order to meet this need, a new linear plasma facility, the Materials Plasma Exposure Experiment (MPEX) is proposed, which will produce divertor relevant plasma conditions for these next generation facilities. The device will be capable of handling low activation irradiated samples and be able to remove and replace samples without breaking vacuum. A Target Exchange Chamber (TEC) which can be disconnected from the high field environment in order to perform in-situ diagnostics is planned for the facility as well. The vacuum system for MPEX must be carefully designed in order to meet the requirements of the different heating systems, and to provide conditions at the target similar to those expected in a divertor. An automated coupling-decoupling (“autocoupler”) system is designed to create a high vacuum seal, and will allow the TEC to be disconnected without breaking vacuum in either the TEC or the primary plasma materials interaction chamber. This autocoupler, which can be actuated remotely in the presence of the high magnetic fields, has been designed and prototyped, and shows robustness in a variety of conditions. The vacuum system has been modeled using a simplified finite element analysis, and indicates that the design goals for the pressures in key regions of the facility are achievable.},
doi = {10.1080/15361055.2017.1347466},
journal = {Fusion Science and Technology},
number = 4,
volume = 72,
place = {United States},
year = {Mon Aug 07 00:00:00 EDT 2017},
month = {Mon Aug 07 00:00:00 EDT 2017}
}
Web of Science
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Works referencing / citing this record:
Differential pumping requirements for the light-ion helicon source and heating systems of Proto-MPEX
journal, August 2018
- Caneses, J. F.; Piotrowicz, P. A.; Biewer, T. M.
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Latest Results from Proto-MPEX and the Future Plans for MPEX
journal, June 2019
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High-Heat-Flux Target Design for the Material Plasma Exposure eXperiment
journal, July 2019
- Lumsdaine, Arnold; Tipton, Joseph B.; Youchison, Dennis
- Fusion Science and Technology, Vol. 75, Issue 7