ENERGY CALIBRATION OF NEUTRON DETECTORS FOR THE NEUTRON SPECTROMETER TANSY

被引：3

作者：

DROZDOWICZ, K ^{[1
]}

HOEK, M ^{[1
]}

ARONSSON, D ^{[1
]}

机构：

[1] HENRYK NIEWODNICZANSKI INST NUCL PHYS,PL-31342 KRAKOW,POLAND

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1991年 / 306卷 / 1-2期

关键词：

D O I：

10.1016/0168-9002(91)90339-R

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We present a method to calibrate an array of scintillation neutron detectors using a gamma source. The count rate is measured as a function of high voltage at a given discrimination level. The obtained distribution is differentiated and a maximum value is determined which corresponds to the voltage at which the gamma peak passes through the discrimination level. By repeating the measurement at different discrimination levels the experimental dependence between the discrimination level and the high voltage is found as a straight line in a log-log diagram. Two calibration parameters for each detector are determined from a fit of these straight lines. The obtained calibration parameters of the detectors give an absolute relation between the output fast pulse amplitude and the energy of radiation for any detector high voltage. Tests of the calibration method have been performed. A relation between the neutron detector calibration parameters and producer's data for the photomultipliers has been investigated and the two kinds of data correlate well. The calibration method has been used to get the detector settings for the TANSY neutron spectrometer. Test procedures for the spectrometer during its regular operation are proposed and a method is given to calibrate a future spare detector to be included in the array.

引用

页码：315 / 330

页数：16

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