Update on the ANAIS experiment. ANAIS-0 prototype results at the new Canfranc Underground Laboratory

被引：16

作者：

Amare, J. ^{[1
]}

Cebrian, S. ^{[1
]}

Cuesta, C. ^{[1
]}

Fortuno, D. ^{[1
]}

Garcia, E. ^{[1
]}

Ginestra, C. ^{[1
]}

Gomez, H. ^{[1
]}

Martinez, M. ^{[1
]}

Olivan, M. A. ^{[1
]}

Ortigoza, Y. ^{[1
]}

Ortiz de Solorzano, A. ^{[1
]}

Pobes, C. ^{[1
]}

Puimedon, J. ^{[1
]}

Sarsa, M. L. ^{[1
]}

Villar, J. A. ^{[1
]}

机构：

[1] Univ Zaragoza, Grp Fis Nucl & Astroparticulas, Zaragoza 50009, Spain

来源：

12TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS (TAUP 2011), PTS 1-6 | 2012年 / 375卷

关键词：

DAMA/LIBRA;

D O I：

10.1088/1742-6596/375/1/012026

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

ANAIS experiment will look for dark matter annual modulation using NaI(Tl) scintillators at the Canfranc Underground Laboratory (LSC). Highly purified NaI(Tl) crystals are being developed to reach the required sensitivity. In a parallel way, the ANAIS-0 module (made with a low background St Gobain NaI(Tl) crystal) has been taking data at the LSC, testing different configurations: various photomultiplier tubes (PMTs) models with/without light guides. Low background PMTs with light guides and ultra low background PMTs without light guides have shown a similar contribution to the background. A complete simulation of the ANAIS-0 module with shielding in the different configurations tested has been carried out and compared with the experimental data, considering contributions to the background from NaI bulk contaminants, PMTs, light guides, quartz windows and shielding materials. A good understanding of the background above 500 keV can be reported.

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