First results from gamma ray diagnostics in EAST Tokamak

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

DOI:https://doi.org/10.1063/1.4955481· OSTI ID:22596639

Zhou, R. J.; Hu, L. Q.; Cao, H. R.; Liu, G. Z.; Li, K.; Zhang, Y.; Lin, S. Y.; Zhang, J. Z. ^[1]

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1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China)

Gamma ray diagnostics has been developed in the EAST tokamak recently. Six BGO scintillator detectors are arranged on the down-half cross-section and pointed at the up-half cross-section of plasma, with space resolution about 15 cm and energy range from 0.3 MeV to 6 MeV. Three main gamma ray peaks in the energy spectra have been observed and are identified as the results of nuclear reactions {sup 207}Pb(n, n′){sup 207m}Pb, H(n, γ) D, and D(p, γ){sup 3}He, respectively. Upgrading of the system is in progress by using LaBr3(Ce) scintillator, fast photo-multiplier tubes, and a fully digital data acquisition system based on high sample frequency digitizers with digital pulse processing algorithms.

• OSTI ID: 22596639
• 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
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALGORITHMS
CROSS SECTIONS
DATA ACQUISITION
DATA ACQUISITION SYSTEMS
DIGITIZERS
ELECTRON MULTIPLIERS
ENERGY SPECTRA
GAMMA RADIATION
HELIUM 3
HT-7U TOKAMAK
LEAD 207
MEV RANGE 01-10
NUCLEAR REACTIONS
PEAKS
PLASMA
PULSES
RESOLUTION
SCINTILLATION COUNTERS