Velocity-space sensitivity of time-of-flight neutron spectrometer at EAST in deuterium plasma

被引：4

作者：

Ge, L. J. ^{[1
,2
]}

Hu, Z. M. ^{[1
,2
]}

Zhang, Y. M. ^{[1
,2
]}

Sun, J. Q. ^{[1
,2
]}

Yuan, X. ^{[1
,2
]}

Peng, X. Y. ^{[1
,2
]}

Chen, Z. J. ^{[1
,2
]}

Du, T. F. ^{[1
,2
]}

Nocente, M. ^{[3
,4
]}

Gorini, G. ^{[3
,4
]}

Tardocchi, M. ^{[4
]}

Hu, L. Q. ^{[5
]}

Zhong, G. Q. ^{[5
]}

Wan, B. N. ^{[5
]}

Li, X. Q. ^{[1
,2
]}

Fan, T. S. ^{[1
,2
]}

机构：

[1] Peking Univ, Sch Phys, Beijing 100871, Peoples R China

[2] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

[3] Univ Milano Bicocca, Dipartimento Fis, Piazza Sci 3, I-20126 Milan, Italy

[4] EURATOM ENEA CNR Assoc, Ist Fis Plasma P Caldirola, Via Cozzi 53, I-20125 Milan, Italy

[5] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2018年 / 89卷 / 10期

关键词：

D O I：

10.1063/1.5039335

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The Time-Of-Flight Enhanced Diagnostics (TOFED) neutron spectrometer with a double-ring structure has been installed at the Experimental Advanced Superconducting Tokamak (EAST) to perform advanced neutron emission spectroscopy diagnosis for deuterium plasma. In order to reduce the random coincidence from the background neutrons and gamma-rays, TOFED was moved outside the experimental hall and placed in the newly-built nuclear diagnostics laboratory in 2017. In this paper, the instrument-specific weight functions of TOFED are derived by taking the instrument response matrix and the radial line of sight in this new layout into consideration. The results show that the instrument is predominantly sensitive to counter-passing particles in the region where time-of-flights < 69.4 ns, while events at higher time-of-flights (corresponding lower neutron energies) are mostly representative of co-passing ions. The instrument-specific weight functions express the relationship between data in a given channel of the spectrum and the velocity space region that contributes to that. The results can be applied for energetic particle physics studies at EAST, in particular to compare data from different diagnostic techniques. Published by AIP Publishing.

引用

页数：5

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