Design and installation of a ferromagnetic wall in tokamak geometry

Hughes, P. E.; Levesque, J. P.; Rivera, N.; Mauel, M. E.; Navratil, G. A.

doi:10.1063/1.4932312

Title: Design and installation of a ferromagnetic wall in tokamak geometry

Journal Article · Thu Oct 08 00:00:00 EDT 2015 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4932312· OSTI ID:1469383

^[1]; Levesque, J. P. ^[1]; Rivera, N. ^[1]; Mauel, M. E. ^[1];

^[1]

Columbia Univ., New York, NY (United States)

Here, low-activation ferritic steels are leading material candidates for use in next-generation fusion development experiments such as a prospective component test facility and DEMO power reactor. Understanding the interaction of plasmas with a ferromagnetic wall will provide crucial physics for these facilities. In order to study ferromagnetic effects in toroidal geometry, a ferritic wall upgrade was designed and installed in the High Beta Tokamak–Extended Pulse (HBT-EP). Several material options were investigated based on conductivity, magnetic permeability, vacuum compatibility, and other criteria, and the material of choice (high-cobalt steel) is characterized. Installation was accomplished quickly, with minimal impact on existing diagnostics and overall machine performance, and initial results demonstrate the effects of the ferritic wall on plasma stability.

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Research Organization:: Columbia Univ., New York, NY (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: FG02-86ER53222

OSTI ID:: 1469383

Alternate ID(s):: OSTI ID: 1223155

Journal Information:: Review of Scientific Instruments, Vol. 86, Issue 10; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 3 works

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References (10)

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Cited By (2)

Measurement of scrape-off-layer current dynamics during MHD activity and disruptions in HBT-EP Levesque, J. P.; Brooks, J. W.; Abler, M. C. Nuclear Fusion, Vol. 57, Issue 8 https://doi.org/10.1088/1741-4326/aa75ea	journal	July 2017
Dynamics of MHD instabilities near a ferromagnetic wall Hughes, P. E.; Levesque, J. P.; Navratil, G. A. Nuclear Fusion, Vol. 58, Issue 12 https://doi.org/10.1088/1741-4326/aade58	journal	September 2018

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