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          Institute: MPI für Physik     Collection: MPI für Physik     Display Documents



ID: 544804.0, MPI für Physik / MPI für Physik
Monte Carlo evaluation of the muon-induced background in the GERDA double beta decay experiment
Authors:Pandola, L.; Bauer, M.; Kröninger, K.; Liu, X.; Tomei, C.; Belogurov, S.; Franco, D.; Klimenko, A.; Knapp, M.
Date of Publication (YYYY-MM-DD):2006
Title of Journal:Nuclear Instruments and Methods in Physics Research Section A
Journal Abbrev.:Nucl.Instrum.Meth.A
Issue / Number:570/1
Start Page:149
End Page:158
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:The new generation of experiments searching for neutrinoless double beta decay is aiming at a background level of 0.001 counts/(kg keV y) or better at the respective Q-values. Cosmic ray muons can be a significant contribution due to a number of physics processes. The GERmanium Detector Array, GERDA, located at the Gran Sasso underground laboratory in Italy, uses germanium enriched in Ge-76 as source and detector material. Germanium is submerged into liquid nitrogen or argon that acts as cooling medium and radiation shield simultaneously. A detailed Geant4-based Monte Carlo simulation was performed to calculate the photon and neutron fluxes induced by cosmic ray muons. The prompt background contributions from gamma-ray and neutron interactions as well as the delayed contributions due to the production of radioactive isotopes within the setup are given. The background can be reduced to the desired level with the muon veto system incorporated in the GERDA design.
Classification / Thesaurus:GERDA
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2006-199
URL:http://publications.mppmu.mpg.de/?action=search&mp...
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