Design and installation of a ferromagnetic wall in tokamak geometry

Journal Article · Thu Oct 15 00:00:00 EDT 2015 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4932312· OSTI ID:22482559

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

---

1. Columbia University Plasma Physics Laboratory, Columbia University, 102 S.W. Mudd, 500 W. 120th St., New York, New York 10027 (United States)

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.

• OSTI ID: 22482559
• Journal Information: Review of Scientific Instruments, Vol. 86, Issue 10; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
COLUMBIA HIGH-BETA TOKAMAK
DESIGN
FERRITIC STEELS
GEOMETRY
HIGH-BETA PLASMA
MAGNETIC SUSCEPTIBILITY
THERMONUCLEAR REACTOR WALLS
WALLS