INSITU CALIBRATION OF TFTR NEUTRON DETECTORS

被引:55
作者
HENDEL, HW
PALLADINO, RW
BARNES, CW
DIESSO, M
FELT, JS
JASSBY, DL
JOHNSON, LC
KU, LP
LIU, QP
MOTLEY, RW
MURPHY, HB
MURPHY, J
NIESCHMIDT, EB
ROBERTS, JA
SAITO, T
STRACHAN, JD
WASZAZAK, RJ
YOUNG, KM
机构
[1] Princeton Plasma Physics Laboratory, Princeton University, Princeton
关键词
D O I
10.1063/1.1141115
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
We report results of the TFTR fission detector calibration performed in December 1988. A NBS-traceable, remotely controlled 2 52Cf neutron source was moved toroidally through the TFTR vacuum vessel. Detection efficiencies for two 23 5U detectors were measured for 930 locations of the neutron point source in toroidal scans at 16 different major radii and vertical heights. These scans effectively simulated the volume-distributed plasma neutron source and the volume-integrated detection efficiency was found to be insensitive to plasma position. The Campbell mode is useful due to its large overlap with the count rate mode and large dynamic range. The resulting absolute plasma neutron source calibration has an uncertainty of ±13%.
引用
收藏
页码:1900 / 1914
页数:15
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