Background measurements in the Gran Sasso Underground Laboratory

被引：21
|
作者：
Haffke, M. [1 ]
Baudis, L. [1 ]
Bruch, T. [1 ]
Ferella, A. D. [1 ]
Undagoitia, T. Marrodan [1 ]
Schumann, M. [1 ]
Te, Y. -F. [1 ]
van der Schaaf, A. [1 ]
机构：
[1] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2011年 / 643卷 / 01期
关键词：
Gamma flux; Neutron flux; Underground Laboratory; LNGS; NaI(Tl); NEUTRON-FLUX; GAMMA;
D O I：
10.1016/j.nima.2011.04.027
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The gamma background flux below 3000 key in the Laboratori Nazionali del Gran Sasso (LNGS), Italy, has been measured using a 3 in. diameter NaI(Tl) detector at different underground positions: in hall A, hall B. the interferometer tunnel, and inside the Large Volume Detector (LVD). The integrated flux is 0.3-0.4 s(-1) cm(-2) at the first three locations, and is lower by two orders of magnitude inside LVD. With the help of Monte Carlo simulations for every location, the contribution of the individual primordial isotopes to the background has been determined. Using an 11 in. diameter NaI(Tl) detector, the background neutron flux in the LNGS interferometer tunnel has been estimated. Within the uncertainties, the result agrees with those from other neutron measurements in the main halls. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：36 / 41
页数：6
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