X-ray analysis of electron Bernstein wave heating in MST

Journal Article · Tue Nov 15 00:00:00 EST 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4960161· OSTI ID:22596461

Anderson, J. K.; DuBois, A. M.; Almagri, A.; Forest, C. B. ^[1]

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1. Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)

A pulse height analyzing x-ray tomography system has been developed to detect x-rays from electron Bernstein wave heated electrons in the Madison symmetric torus reversed field pinch (RFP). Cadmium zinc telluride detectors are arranged in a parallel beam array with two orthogonal multi-chord detectors that may be used for tomography. In addition a repositionable 16 channel fan beam camera with a 55° field of view is used to augment data collected with the Hard X-ray array. The chord integrated signals identify target emission from RF heated electrons striking a limiter located 12° toroidally away from the RF injection port. This provides information on heated electron spectrum, transport, and diffusion. RF induced x-ray emission from absorption on harmonic electron cyclotron resonances in low current (<250 kA) RFP discharges has been observed.

• OSTI ID: 22596461
• Journal Information: Review of Scientific Instruments, Vol. 87, Issue 11; Other Information: (c) 2016 Author(s); 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
ABSORPTION
BEAMS
BERNSTEIN MODE
CADMIUM TELLURIDES
CAMERAS
CYCLOTRONS
ELECTRON CYCLOTRON-RESONANCE
ELECTRON SPECTRA
ELECTRONS
EMISSION
HARD X RADIATION
HEATING
PLASMA WAVES
REVERSED-FIELD PINCH DEVICES
REVERSE-FIELD PINCH
TOMOGRAPHY
ZINC TELLURIDES