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Low Background CdWO₄ Scintillation Detector

100%

Kasperovych D., Danevich F., Kobychev V., Kropivyansky B., Tymoshenko A.

Acta Physica Polonica A

2018

vol. 133

issue 4

923-927

Low background scintillation setup has been developed that exhibits 3 orders of magnitude lower counting rate of a large volume (2.1 kg) CdWO₄ detector in the energy region 0.5-2.6 MeV, and one order of magnitude above 3 MeV. The background reduction was achieved by application of radiopure passive shield, active plastic-scintillation muon veto placed above the setup and pulse-shape discrimination. Construction of additional plastic scintillation counters is in progress to reduce the residual cosmic muons background. The setup can be applied to develop radiopure scintillators, measure radioactive contamination of materials, carry out small scale low counting experiments.

Radiopurity of ZnWO_4 Crystal Scintillators

45%

Belli P., Bernabei R., Cappella F., Cerulli R., Danevich F., Dubovik A., d'Angelo S., Galashov E., Grinyov B., Incicchitti A., Kobychev V., Nagornaya L., Nisi S., Nozzoli F., Poda D., Podviyanuk R., Prosperi D., Shlegel V., Tretyak V., Vasiliev Y., Vostretsov Y.

issue 1

139-142

Recently ZnWO_4 was proposed as perspective material for low-counting experiments to search for rare processes. Such experiments demand high radiopurity of ZnWO_4 crystal scintillators. With this aim radioactive contamination of large volume (0.1-0.7 kg) ZnWO_4 crystal scintillators were measured in the underground Laboratori Nazionali del Gran Sasso of the INFN at the depth of ≈ 3600 m water equivalent.

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2 Acta Physica Polonica A

1 2018

1 2010

2 Danevich F.

2 Kobychev V.

1 Belli P.

1 Bernabei R.

1 Cappella F.

1 Cerulli R.

1 Dubovik A.

1 Galashov E.

1 Grinyov B.

1 Incicchitti A.

1 Kasperovych D.

1 Kropivyansky B.

1 Nagornaya L.

1 Nisi S.

1 Nozzoli F.

1 Poda D.

1 Podviyanuk R.

1 Prosperi D.

1 Shlegel V.

1 Tretyak V.

1 Tymoshenko A.

1 Vasiliev Y.

1 Vostretsov Y.

1 d'Angelo S.

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Low Background CdWO₄ Scintillation Detector

Radiopurity of ZnWO_4 Crystal Scintillators