Modular total absorption spectrometer

Karny, Marek; Rykaczewski, Krzysztof P. (ORCID:0000000247726330); Fijałkowska, Aleksandra G.; Rasco, Bertis C.; Wolińska-Cichocka, Marzena; Grzywacz, R. K.; Goetz, K. C.; Miller, D.; Zganjar, E. F.

doi:10.1016/j.nima.2016.08.046

DOE OSTI · 1491323

Modular total absorption spectrometer

Karny, Marek·Rykaczewski, Krzysztof P. (ORCID:0000000247726330)·Fijałkowska, Aleksandra G.·Rasco, Bertis C.·Wolińska-Cichocka, Marzena·Grzywacz, R. K.·Goetz, K. C.·Miller, D.·Zganjar, E. F.

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Abstract

The design and performance of the Modular Total Absorption Spectrometer built and commissioned at the Oak Ridge National Laboratory is presented here. The active volume of the detector is approximately one ton of NaI(Tl), which results in very high full γ energy peak efficiency of 71% at 6 MeV and nearly flat efficiency of around 81.5% for low energy γ-rays between 300 keV and 1 MeV. In addition to the high peak efficiency, the modular construction of the detector permits the use of a γ-coincidence technique in data analysis as well as β-delayed neutron observation.

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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY Beta decay NaI(Tl)Simulation Total absorption spectrometry

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Karny, Marek, Rykaczewski, Krzysztof P. (ORCID:0000000247726330), Fijałkowska, Aleksandra G., Rasco, Bertis C., Wolińska-Cichocka, Marzena, Grzywacz, R. K., Goetz, K. C., Miller, D., Zganjar, E. F.. 2016-08-24. Modular total absorption spectrometer. https://doi.org/10.1016/j.nima.2016.08.046

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