High count rate performance of NE213 scintillation detectors with associated pulse shape discrimination electronics

被引：3

作者：

Howarth, PJA ^{[1
]}

机构：

[1] UNIV BIRMINGHAM, SCH PHYS & SPACE RES, BIRMINGHAM B15 2TT, W MIDLANDS, ENGLAND

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1996年 / 376卷 / 01期

关键词：

D O I：

10.1016/0168-9002(96)00196-9

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

During deuterium-tritium plasma discharges in the Joint European Torus (JET), Link Analytical 5020 pulse shape discrimination (PSD) units failed to discriminate correctly neutron and gamma-ray induced pulses from NE213 scintillation detectors. In this paper the discrimination failure is derailed as well as the subsequent experiments that were aimed at identifying the reason for the failure. The neutron/gamma-ray pulse misinterpretation was found to be related to rapid and significant changes in count rate which perturbed the PSD unit on a time scale faster than the response time of its DC stabilisation mechanism; operation at high but steady count rates did not lead to neutron/gamma-ray pulse misinterpretation. After increasing the frequency at which the stabilisation mechanism is triggered and the magnitude of the stabilisation signals, the 5020 PSD unit has been shown to be more responsive to a rapid change in count rate so that the degree of neutron/gamma-ray pulse misinterpretation is greatly reduced.

引用

页码：67 / 81

页数：15

共 20 条

[1] VERSATILE PULSE SHAPE DISCRIMINATOR FOR CHARGED-PARTICLE SEPARATION AND ITS APPLICATION TO FAST-NEUTRON TIME-OF-FLIGHT SPECTROSCOPY [J].

ADAMS, JM ;

WHITE, G .

NUCLEAR INSTRUMENTS & METHODS, 1978, 156 (03) :459-476

[2] THE JET NEUTRON EMISSION PROFILE MONITOR [J].

ADAMS, JM ;

JARVIS, ON ;

SADLER, GJ ;

SYME, DB ;

WATKINS, N .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1993, 329 (1-2) :277-290

[3]

[Anonymous], 1964, THEORY PRACTICE SCIN

[4] THE RESPONSE OF ORGANIC SCINTILLATORS TO FAST NEUTRONS [J].

BATCHELOR, R ;

GILBOY, WB ;

PARKER, JB ;

TOWLE, JH .

NUCLEAR INSTRUMENTS & METHODS, 1961, 13 (01) :70-82

[5]

BIRRUS WR, 1967, NUCL INSTRUM METHODS, V67, P181

[6] A SCINTILLATION COUNTER WITH NEUTRON AND GAMMA-RAY DISCRIMINATORS [J].

BROOKS, FD .

NUCLEAR INSTRUMENTS & METHODS, 1959, 4 (03) :151-163

[7] THEORETICAL + EXPERIMENTAL STUDY OF FATIGUE IN PHOTOMULTIPLIER TUBES [J].

CANTARELL, I .

NUCLEAR SCIENCE AND ENGINEERING, 1964, 18 (01) :31-&

[8]

CATHEY L, 1958, IRE T NUCL SCI, V5, P109

[9] A VOLTAGE-DEPENDENT-RESISTOR DYNODE CHAIN TO REDUCE VARIATION OF PHOTOMULTIPLIER GAIN WITH COUNTING RATE [J].

GALLOWAY, RB ;

VASS, DG .

NUCLEAR INSTRUMENTS & METHODS, 1967, 49 (01) :55-&

[10] GAIN STABILITY IN HIGH-CURRENT PHOTOMULTIPLIERS AT HIGH VARIABLE COUNTING RATES [J].

GUPTA, AK ;

NATH, N .

NUCLEAR INSTRUMENTS & METHODS, 1967, 53 (02) :352-&

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