Design of the radiation shielding for the time of flight enhanced diagnostics neutron spectrometer at Experimental Advanced Superconducting Tokamak

Journal Article · Sat Nov 15 00:00:00 EST 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4891059· OSTI ID:22308938

Du, T. F.; Chen, Z. J.; Peng, X. Y.; Yuan, X.; Zhang, X.; Hu, Z. M.; Cui, Z. Q.; Xie, X. F.; Ge, L. J.; Li, X. Q.; Zhang, G. H.; Chen, J. X.; Gorini, G.; Nocente, M. ^[1]; Tardocchi, M. ^[2]; Hu, L. Q.; Zhong, G. Q.; Lin, S. Y.; Wan, B. N. ^[3]

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1. Dipartimento di Fisica, Università di Milano-Bicocca, Milano (Italy)
2. Istituto di Fisicadel Plasma “P. Caldirola,” Milano (Italy)
3. Institute of Plasma Physics, CAS, Hefei (China)

A radiation shielding has been designed to reduce scattered neutrons and background gamma-rays for the new double-ring Time Of Flight Enhanced Diagnostics (TOFED). The shielding was designed based on simulation with the Monte Carlo code MCNP5. Dedicated model of the EAST tokamak has been developed together with the emission neutron source profile and spectrum; the latter were simulated with the Nubeam and GENESIS codes. Significant reduction of background radiation at the detector can be achieved and this satisfies the requirement of TOFED. The intensities of the scattered and direct neutrons in the line of sight of the TOFED neutron spectrometer at EAST are studied for future data interpretation.

• OSTI ID: 22308938
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 11; Other Information: (c) 2014 AIP Publishing LLC; 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
BACKGROUND RADIATION
COMPUTER CODES
GAMMA RADIATION
HT-7U TOKAMAK
MONTE CARLO METHOD
NEUTRON SOURCES
NEUTRON SPECTROMETERS
SHIELDING
TIME-OF-FLIGHT METHOD