Influence of neutrons and γ-rays in the Frejus underground laboratory on the NEMO experiment

被引：11

作者：

Marquet, C

Piquemal, F

Arnold, R

Augier, C

Baker, J

Barabash, A

Bing, O

Blum, D

Brudanin, V

Caffrey, J

Campagne, JE

Caurier, E

Dassie, D

Egorov, V

Errahmane, K

Eschbach, R

Filipova, T

Guyonnet, JL

Jollet, C

Jullian, S

Hubert, F

Hubert, P

Kisel, I

Kochetov, O

Kornoukhov, VN

Kovalenko, V

Lalanne, D

Laplanche, F

Leccia, F

Linck, I

Longuemare, C

Mauger, F

Nicholson, HW

Nikolic-Audit, I

Ohsumi, H

Pilugin, I

Reyss, JL

Sarazin, X

Scheibling, F

Stekl, I

Suhonen, J

Sutton, CS

Szklarz, G

Timkin, V

Tretyak, V

Umatov, V

Vála, L

Vanyushin, I

Vareille, A

Vorobel, V

机构：

[1] CEN Bordeaux Gradignan, IN2P3, CNRS, F-33175 Gradignan, France

[2] Univ Bordeaux 1, F-33175 Gradignan, France

[3] Univ Strasbourg, F-67037 Strasbourg, France

[4] IN2P3, CNRS, IReS, F-67037 Strasbourg, France

[5] Univ Paris 11, F-91405 Orsay, France

[6] IN2P3, CNRS, LAL, F-91405 Orsay, France

[7] INEEL, Idaho Falls, ID 83415 USA

[8] Inst Theoret & Expt Phys, Moscow 117259, Russia

[9] Joint Inst Nucl Res, Dubna 141980, Russia

[10] Univ Caen, F-14032 Caen, France

[11] IN2P3, CNRS, LPC, F-14032 Caen, France

[12] Mt Holyoke Coll, S Hadley, MA 01075 USA

[13] CNRS, LSCE, F-91190 Gif Sur Yvette, France

[14] Czech Tech Univ, FNSPE, Prague, Czech Republic

[15] Univ Jyvaskyla, SF-40351 Jyvaskyla, Finland

[16] Charles Univ Prague, Prague, Czech Republic

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2001年 / 457卷 / 03期

关键词：

neutron; gamma-ray; Monte Carlo simulation; background; double-beta decay;

D O I：

10.1016/S0168-9002(00)00789-0

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

To be sensitive to an effective Majorana neutrino mass, [m(v)], on the order of 0.1 eV. the NEMO 3 double beta (beta beta (0v)) decay experiment requires precise knowledge and control of the backgrounds. The effect of neutrons and gamma -rays from the Frejus underground laboratory (LSM, Laboratoire Souterrain de Modane) has been studied during 10 700 h of data collection. The data were taken with a NEMO 2 prototype detector using different shield configurations. Monte Carlo calculations with GEANT/MICAP code and a new library of gamma -rays from neutron captures are presented. The implied consequences for the NEMO 3 detector which is under construction are discussed. The neutrinoless double beta decay background induced by neutrons and gamma -rays within the LSM will be suppressed to the very suitable level of 0.1 event in a live time of five years given the appropriate shield and magnetic field, (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：487 / 498

页数：12

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