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30 May 2022 to 4 June 2022
Virtual Seoul
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First operation of undoped CsI directly coupled with SiPM at 77 Kelvin

Not scheduled
Virtual Seoul

Virtual Seoul

Poster New neutrino technologies Poster


Keyu Ding (University of South Dakota)


The light yield of a small undoped CsI crystal directly coupled with two SiPMs at about 77~Kelvin was measured to be $42.8 \pm 1.1$~photoelectrons (PE) per keV electron-equivalent (keVee) using $X$ and $\gamma$-ray peaks from an $^{241}$Am radioactive source. The operation of an undoped CsI crystal coupled with two SiPMs at 77~K was the first attempt in the world. The high light yield together with some other technical advantages makes it a great neutrino and dark matter detector, particularly at the Spallation Neutron Source, Oak Ridge National Laboratory.

Collaboration COHERENT

Primary authors

Keyu Ding (University of South Dakota) Prof. Jing Liu (University of South Dakota)

Presentation Materials