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Title: Mapping of the HIDRA stellarator magnetic flux surfaces

Abstract

The Hybrid Illinois Device for Research and Applications (HIDRA) is a classical stellarator designed for conducting plasma material interaction experiments and developing novel Plasma Facing Components (PFCs). Notably, the testing of two open-channel liquid lithium PFCs is imminent. Determining the shape of the plasma and its magnetic structure inside HIDRA is essential to carry out these tests. For this, electron traces were captured to build up the images of the HIDRA magnetic flux surfaces for several magnetic configurations, following the same procedure previously employed on the WEGA stellarator coupling an electron gun with a fluorescent detector. The FIELDLINES code has then been used to generate computational surfaces matching the experimental results. The obtained surfaces were found to be subject to a similar n = 1 error field as the one observed on WEGA, suggesting that the origin of this error field is inherent to the HIDRA vacuum vessel. Also, the effect of adding a vertical field was investigated, demonstrating the ability to radially shift the magnetic axis and move to a regime free of low-order rational resonances. Finally, this additional control over the HIDRA plasma and magnetic structure allows more freedom in setting up the PFC tests in the limitermore » and divertor regions.« less

Authors:
ORCiD logo [1];  [1];  [1]; ORCiD logo [1]; ORCiD logo [1];  [1];  [1]; ORCiD logo [1]
  1. Univ. of Illinois at Urbana-Champaign, IL (United States)
Publication Date:
Research Org.:
Univ. of Illinois at Urbana-Champaign, IL (United States); Princeton Univ., NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1612478
Alternate Identifier(s):
OSTI ID: 1560713
Grant/Contract Number:  
SC0016322; AC02-09CH11466
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 26; Journal Issue: 9; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Physics; Plasma confinement; Display devices; Plasma facing components; Magnetic fields; Stellarators; Plasma material interactions

Citation Formats

Rizkallah, Rabel, Marcinko, Steven, Curreli, Davide, Parsons, Matthew S., Bartlett, Nathan, Gluck, Raanan, Shone, Andrew, and Andruczyk, Daniel. Mapping of the HIDRA stellarator magnetic flux surfaces. United States: N. p., 2019. Web. https://doi.org/10.1063/1.5100744.
Rizkallah, Rabel, Marcinko, Steven, Curreli, Davide, Parsons, Matthew S., Bartlett, Nathan, Gluck, Raanan, Shone, Andrew, & Andruczyk, Daniel. Mapping of the HIDRA stellarator magnetic flux surfaces. United States. https://doi.org/10.1063/1.5100744
Rizkallah, Rabel, Marcinko, Steven, Curreli, Davide, Parsons, Matthew S., Bartlett, Nathan, Gluck, Raanan, Shone, Andrew, and Andruczyk, Daniel. Fri . "Mapping of the HIDRA stellarator magnetic flux surfaces". United States. https://doi.org/10.1063/1.5100744. https://www.osti.gov/servlets/purl/1612478.
@article{osti_1612478,
title = {Mapping of the HIDRA stellarator magnetic flux surfaces},
author = {Rizkallah, Rabel and Marcinko, Steven and Curreli, Davide and Parsons, Matthew S. and Bartlett, Nathan and Gluck, Raanan and Shone, Andrew and Andruczyk, Daniel},
abstractNote = {The Hybrid Illinois Device for Research and Applications (HIDRA) is a classical stellarator designed for conducting plasma material interaction experiments and developing novel Plasma Facing Components (PFCs). Notably, the testing of two open-channel liquid lithium PFCs is imminent. Determining the shape of the plasma and its magnetic structure inside HIDRA is essential to carry out these tests. For this, electron traces were captured to build up the images of the HIDRA magnetic flux surfaces for several magnetic configurations, following the same procedure previously employed on the WEGA stellarator coupling an electron gun with a fluorescent detector. The FIELDLINES code has then been used to generate computational surfaces matching the experimental results. The obtained surfaces were found to be subject to a similar n = 1 error field as the one observed on WEGA, suggesting that the origin of this error field is inherent to the HIDRA vacuum vessel. Also, the effect of adding a vertical field was investigated, demonstrating the ability to radially shift the magnetic axis and move to a regime free of low-order rational resonances. Finally, this additional control over the HIDRA plasma and magnetic structure allows more freedom in setting up the PFC tests in the limiter and divertor regions.},
doi = {10.1063/1.5100744},
journal = {Physics of Plasmas},
number = 9,
volume = 26,
place = {United States},
year = {2019},
month = {9}
}

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Works referenced in this record:

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