Voltar
Artigo Acesso aberto Produção Nacional Revisado por pares
BIBTEX RIS

Background model for the NaI(Tl) crystals in COSINE-100

2018; Springer Science+Business Media; Volume: 78; Issue: 6 Linguagem: Inglês

10.1140/epjc/s10052-018-5970-2

ISSN

1434-6052

Autores

P. Adhikari, G. Adhikari, E. Barbosa de Souza, N. Carlin, S. Choi, W. Choi, Mitra Djamal, A. C. Ezeribe, C. Ha, I. S. Hahn, A. Hubbard, E. J. Jeon, J. H. Jo, H. W. Joo, W. G. Kang, M. Kauer, Won-Seok Kang, B. H. Kim, H. Kim, H. J. Kim, K.W. Kim, Minsuk Kim, N.Y. Kim, S.K. Kim, Y.D. Kim, Young Heon Kim, V. A. Kudryavtsev, H.S. Lee, J. Lee, J.Y. Lee, M. H. Lee, D. S. Leonard, W. Lynch, R. Maruyama, F. Mouton, S. L. Olsen, H. Park, H.S. Park, Juhee Park, K. S. Park, W. Pettus, H. Prihtiadi, S. Ra, C. Rott, A. Scarff, N.J.C. Spooner, W. G. Thompson, L. Yang, S.H. Yong,

Tópico(s)

Radiation Detection and Scintillator Technologies

Resumo

The COSINE-100 dark matter search experiment is an array of NaI(Tl) crystal detectors located in the Yangyang Underground Laboratory (Y2L). To understand measured backgrounds in the NaI(Tl) crystals we have performed Monte Carlo simulations using the Geant4 toolkit and developed background models for each crystal that consider contributions from both internal and external sources, including cosmogenic nuclides. The background models are based on comparisons of measurement data with Monte Carlo simulations that are guided by a campaign of material assays and are used to evaluate backgrounds and identify their sources. The average background level for the six crystals (70 kg total mass) that are studied is 3.5 counts/day/keV/kg in the (2–6) keV energy interval. The dominant contributors in this energy region are found to be $$^{210}$$ Pb and $$^3$$ H.

Referência(s)