High-sensitive spectrometer of fast neutrons and the results of fast neutron background flux measurements at the Gallium-Germanium Solar Neutrino Experiment

被引：5

作者：

Abdurashitov, JN ^{[1
]}

Gavrin, VN ^{[1
]}

Kalikhov, AV ^{[1
]}

Matushko, VL ^{[1
]}

Shikhin, AA ^{[1
]}

Yants, VE ^{[1
]}

Zaborskaia, OS ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2002年 / 476卷 / 1-2期

关键词：

fast neutrons; response function; detection efficiency; calorimeter; thermalizer; helium proportional counters;

D O I：

10.1016/S0168-9002(01)01449-8

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The principle of operation, design, registration system and main characteristics of a fast neutron spectrometer are described. The spectrometer is intended for direct measurements of ultra low fluxes of fast neutrons. It is sensitive to neutron fluxes of 10(-7)cm(-2)s(-1) and lower. The detection efficiency of fast neutrons with simultaneous energy measurement was determined from Monte-Carlo simulation to be equal to 0.11+/-0.01. The background counting rate in the detector corresponds to a neutron flux of (6.5+/-2.1) x 10(-7) cm(-2) s(-1) in the range 1.0-11.0 MeV. The natural neutron flux from the surrounding mine rock at the depth of 4600m of water equivalent was measured to be (7.3+/-2.4) x 10(-7) cm(-2)s(-1) in the range 1.0-11.0MeV. The flux of fast neutrons in the SAGE main room was measured to be < 2.3 x 10(-7) cm(-2)s(-1) in 1.0-11.0 MeV energy range. (C) 2002 Published by Elsevier Science B.V.

引用

页码：322 / 326

页数：5

共 4 条

[1]

Abdurashitov DN, 1997, INSTRUM EXP TECH+, V40, P741

[2] Measurement of the solar neutrino capture rate with gallium metal [J].

Abdurashitov, JN ;

Gavrin, VN ;

Girin, SV ;

Gorbachev, VV ;

Ibragimova, TV ;

Kalikhov, AV ;

Khairnasov, NG ;

Knodel, TV ;

Mirnov, IN ;

Shikhin, AA ;

Veretenkin, EP ;

Vermul, VM ;

Yants, VE ;

Zatsepin, GT ;

Bowles, TJ ;

Teasdale, WA ;

Wark, DL ;

Cherry, ML ;

Nico, JS ;

Cleveland, BT ;

Davis, R ;

Lande, K ;

Wildenhain, PS ;

Elliott, SR ;

Wilkerson, JF .

PHYSICAL REVIEW C, 1999, 60 (05) :32

[3]

ABDURASHITOV JN, 2000, PHYS ATOM NUCL+, V63, P1349

[4]

KORNOUKHOV VN, 1998, THESIS RUSS ACAD SCI

← 1 →