Note: Multi-point measurement of |B| in the gas-dynamic trap with a spectral motional Stark effect diagnostic

Journal Article · Mon Aug 15 00:00:00 EDT 2011 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3624742· OSTI ID:22063708

Lizunov, A A; Donin, A S; Ivanov, A A; Prikhodko, V V ^[1]; Den Hartog, D J ^[2]

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1. Budker Institute of Nuclear Physics, 630090 Novosibirsk (Russian Federation)
2. Department of Physics and Center for Magnetic Self-Organization in Laboratory and Astrophysical Plasmas, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)

An upgraded spectral motional Stark effect diagnostic has been installed on the gas-dynamic trap (GDT) experiment to enable spatially resolved measurement of |B|. A new low-noise charge-coupled device detector, combined with enhancements of the diagnostic neutral beam, allows single-shot profile measurements. Previously only single-point motional Stark effect measurements were possible, and detector noise severely limited measurement precision, requiring multi-shot averaging. The plasma pressure profile in GDT is derived from the measured diamagnetic modification of |B| and used to examine the conditions of stable plasma confinement at high plasma pressure.

• OSTI ID: 22063708
• Journal Information: Review of Scientific Instruments, Vol. 82, Issue 8; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCURACY
CHARGE-COUPLED DEVICES
NOISE
PLASMA CONFINEMENT
PLASMA DIAGNOSTICS
PLASMA DIAMAGNETISM
PLASMA PRESSURE
STARK EFFECT
TRAPS