Low background detector with enriched 116CdWO4 crystal scintillators to search for double β decay of 116Cd

被引：58

作者：

Barabash, A. S. ^{[2
]}

Belli, P. ^{[1
]}

Bernabei, R. ^{[1
,3
]}

Boiko, R. S. ^{[4
]}

Cappella, F. ^{[5
,6
]}

Caracciolo, V. ^{[4
,7
,8
]}

Chernyak, D. M.

Cerulli, R. ^{[4
,7
]}

Danevich, F. A.

Di Vacri, M. L. ^{[7
]}

Dossovitskiy, A. E. ^{[9
]}

Galashov, E. N. ^{[10
]}

Incicchitti, A. ^{[5
,6
]}

Kobychev, V. V. ^{[4
]}

Konovalov, S. I. ^{[2
]}

Kovtun, G. P. ^{[11
]}

Kudovbenko, V. M. ^{[4
]}

Laubenstein, M. ^{[7
]}

Mikhlin, A. L. ^{[9
]}

Nisi, S. ^{[7
]}

Poda, D. V. ^{[4
,7
]}

Podviyanuk, R. B. ^{[4
]}

Polischuk, O. G. ^{[4
]}

Shcherban, A. P. ^{[11
]}

Shlegel, V. N. ^{[10
]}

Solopikhin, D. A. ^{[11
]}

Stenin, Yu G. ^{[10
]}

Tretyak, V. I. ^{[4
]}

Umatov, V. I. ^{[2
]}

Vasiliev, Ya V. ^{[10
]}

Virich, V. D. ^{[11
]}

机构：

[1] INFN Sez Roma Tor Vergata, I-00133 Rome, Italy

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

[3] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy

[4] MSP, Inst Nucl Res, UA-03680 Kiev, Ukraine

[5] INFN Sez Roma La Sapienza, I-00185 Rome, Italy

[6] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[7] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67100 Assergi, AQ, Italy

[8] Univ Aquila, Dipartimento Fis, I-67100 Laquila, Italy

[9] Joint Stock Co NeoChem, Moscow 117647, Russia

[10] Nikolaev Inst Inorgan Chem, Novosibirsk 630090, Russia

[11] Kharkiv Inst Phys & Technol, Natl Sci Ctr, UA-61108 Kharkov, Ukraine

来源：

JOURNAL OF INSTRUMENTATION | 2011年 / 6卷

关键词：

Gamma detectors (scintillators; CZT; HPG; HgI etc); Scintillators; scintillation and light emission processes (solid; gas and liquid scintillators); Large detector systems for particle and astroparticle physics; GRADIENT CZOCHRALSKI TECHNIQUE; PULSE-SHAPE DISCRIMINATION; 2-BETA DECAY; NEUTRINO MASS; GROWTH; ZNWO4; HELP;

D O I：

10.1088/1748-0221/6/08/P08011

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A cadmium tungstate crystal boule enriched in Cd-116 to 82% with mass of 1868 g was grown by the low-thermal-gradient Czochralski technique. The isotopic composition of cadmium and the trace contamination of the crystal were estimated by High Resolution Inductively Coupled Plasma Mass-Spectrometry. The crystal scintillators produced from the boule were subjected to characterization that included measurements of transmittance and energy resolution. A low background scintillation detector with two (CdWO4)-Cd-116 crystal scintillators (586 g and 589 g) was developed. The detector was running over 1727 h deep underground at the Gran Sasso National Laboratories of the INFN (Italy), which allowed to estimate the radioactive contamination of the enriched crystal scintillators. The radiopurity of a third (CdWO4)-Cd-116 sample (326 g) was tested with the help of ultra-low background high purity germanium gamma detector. Monte Carlo simulations of double beta processes in Cd-116 were used to estimate the sensitivity of an experiment to search for double beta decay of Cd-116.

引用

页数：24

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