Simulations of scattered neutrons for the time-of-flight enhanced diagnostics (TOFED) neutron spectrometer on EAST

Jiaqi SUN (孙嘉琪); Zhimeng HU (胡志猛); Lijian GE (葛理健); Yimo ZHANG (张一镆); Tengfei DU (杜腾飞); Xingyu PENG (彭星宇); Zhongjing CHEN (陈忠靖); Xing ZHANG (张兴); Giuseppe GORINI; Massimo NOCENTE; Marco TARDOCCHI; Liqun HU (胡立群); Guoqiang ZHONG (钟国强); Baonian WAN (万宝年); Xiangqing LI (李湘庆); Tieshuan FAN (樊铁栓)

doi:10.1088/2058-6272/ab9529

Plasma Science and Technology > 2020 > 22(8): 84004-084004. > DOI: 10.1088/2058-6272/ab9529

Jiaqi SUN (孙嘉琪), Zhimeng HU (胡志猛), Lijian GE (葛理健), Yimo ZHANG (张一镆), Tengfei DU (杜腾飞), Xingyu PENG (彭星宇), Zhongjing CHEN (陈忠靖), Xing ZHANG (张兴), Giuseppe GORINI, Massimo NOCENTE, Marco TARDOCCHI, Liqun HU (胡立群), Guoqiang ZHONG (钟国强), Baonian WAN (万宝年), Xiangqing LI (李湘庆), Tieshuan FAN (樊铁栓). Simulations of scattered neutrons for the time-of-flight enhanced diagnostics (TOFED) neutron spectrometer on EAST[J]. Plasma Science and Technology, 2020, 22(8): 84004-084004. DOI: 10.1088/2058-6272/ab9529

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Simulations of scattered neutrons for the time-of-flight enhanced diagnostics (TOFED) neutron spectrometer on EAST

¹ School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, People's Republic of China
² Dipartimento di Fisica, Università di Milano-Bicocca, Milano, Piazza della Scienza 3, I-20126 Milano, Italy
³ Istituto di Fisica del Plasma ‘P. Caldirola’, EURATOM-ENEA-CNR Association, Via Cozzi 53, I-20125 Milano, Italy
⁴ Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, People's Republic of China

Funds: This work was supported by National Key Research and Development Program of China (Nos. 2016YY0200805 and 2017YFF0206205), Major Program of National Natural Science Foundation of China (No. 11790324), and National Magnetic Confinement Fusion Science Program of China (Nos. 2013GB106004 and 2012GB101003).

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Received Date: December 30, 2019
Revised Date: May 12, 2020
Accepted Date: May 18, 2020

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Abstract

Abstract

The time-of-flight enhanced diagnostics (TOFED) neutron spectrometer has been installed in TOFED house, which is a newly-built neutron diagnostic lab outside the EAST experimental hall. The line of sight (LOS) of TOFED is defined by the collimator going through the 150 cm biological shielding wall, which can reduce background neutrons very effectively for the neutron spectral measurements. The Monte Carlo code MCNP5 is used in the simulations to characterize collimation effects and the radiation safety of the new house. The collimator makes neutron flux almost fully perpendicular to S1 detectors. In addition, the proportion of scattered neutrons in the LOS of the TOFED is obtained for the measured spectral data interpretation. The simulation results show that the TOFED house satisfies the requirement for the TOFED operations at EAST and gives a safe environment for personnel access during the EAST operation.
- EAST,
- TOFED,
- scattered components,
- shielding efficiency

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References (24)

References

[1]	Hellesen C et al 2010 Nucl. Fusion 50 022001
[2]	Wolle B 1999 Phys. Rep. 312 1
[3]	Nocente M et al 2010 Nucl. Fusion 50 055001
[4]	Nocente M et al 2011 Nucl. Fusion 51 063011
[5]	Johnson M G et al 2008 Nucl. Instrum. Methods Phys. Res. A 591 417
[6]	Zhang X et al 2014 Nucl. Fusion 54 104008
[7]	Peng X Y et al 2016 Rev. Sci. Instrum. 87 11D836
[8]	Ge L J 2019 Research on fast-ion physics in fusion plasma based on neutron emission spectroscopy diagnostics PhD Thesis Peking University, Beijing, China (in Chinese)
[9]	Zhang X et al 2014 Rev. Sci. Instrum. 85 043503
[10]	Du T F et al 2014 Rev. Sci. Instrum. 85 11E115
[11]	Shibata Y et al 2001 Rev. Sci. Instrum. 72 828
[12]	X-5 Monte Carlo Team 2003 MCNP—A General Monte Carlo N-particle Transport Code, Version 5, California, Los Alamos National Laboratory (https://mcnp.lanl.gov/mcnp5.shtml)
[13]	Chadwick M et al 2011 Nucl. Data Sheets 112 2887
[14]	Wu S T et al 2002 Design of the HT-7U tokamak device 18th IEEE/NPSS Symp. on Fusion Engineering. Symp. Proc.(Cat. No.99CH37050) (Albuquerque, NM: IEEE)pp 549–52
[15]	Huang Q Y 2000 Nucl. Tech. 23 513 (in Chinese)
[16]	Pankin A et al 2004 Comput. Phys. Commun. 159 157
[17]	Nocente M 2012 Neutron and gamma-ray emission spectroscopy as fast ion diagnostics in fusion plasmas PhD Thesis Università degli Studi di Milano-Bicocca, Milan,Italy
[18]	Chen Z et al 2013 Nucl. Fusion 53 063023
[19]	Ge L J et al 2018 Plasma Phys. Control. Fusion 60 095004
[20]	Zhang X et al 2012 Plasma Sci. Technol. 14 675
[21]	Johnson M G et al 2010 Plasma Phys. Control. Fusion 52 085002
[22]	ICRP 2007 The 2007 Recommendations of the International Commission on Radiological Protection (ICRP Publication 103) (Oxford: Pergamon)
[23]	Pelowitz D B 2013 MCNP6 User’s Manual—Code Version 1.0, California, Los Alamos National Laboratory (https://rsicc.ornl.gov/codes/ccc/ccc8/ccc-810.html)
[24]	ICRP 1996 Conversion Coefficients for Use in Radiological Protection Against External Radiation (ICRP Publication 74) 26 (Oxford: Pergamon)

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Simulations of scattered neutrons for the time-of-flight enhanced diagnostics (TOFED) neutron spectrometer on EAST