MEASUREMENT OF 14-MEV NEUTRONS AT TFTR WITH SI-DIODE DETECTORS

被引：13

作者：

RUSKOV, E

HEIDBRINK, WW

DUONG, HH

ROQUEMORE, AL

STRACHAN, JD

机构：

[1] University of California, Irvine

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1995年 / 66卷 / 01期

关键词：

D O I：

10.1063/1.1146202

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A detector system based on partially depleted silicon surface barrier detectors and fast front-end electronics has been built and cross calibrated to a set of absolutely calibrated 4He recoil detectors. The cross-calibration factor for the channel with the widest dynamic range is 2.5×10-13 counts per 14 MeV source neutron. These data agree well with the independent neutron activation data. The new detector system covers a large dynamic range (corresponding to 1013-1018 neutrons/s). The response is linear, except at the highest count rates where the detector dead time (∼200 ns) causes departure from linearity. The noise discrimination against 2.5 MeV neutrons and γ pileup is excellent. Measurements of D-T neutrons from a tritium gas puff experiment as well as from a high-power D-T discharge in the TFTR tokamak are presented. © 1995 American Institute of Physics.

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页码：910 / 912

页数：3

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