Bulletin of the American Physical Society
APS April Meeting 2024
Wednesday–Saturday, April 3–6, 2024; Sacramento & Virtual
Session H15: Mini-Symposium: Neutrino Detector Development I
1:30 PM–3:18 PM,
Thursday, April 4, 2024
SAFE Credit Union Convention Center
Room: Ballroom B6-7, Floor 2
Sponsoring
Units:
DNP DPF
Chair: David Asner, Brookhaven National Laboratory
Abstract: H15.00002 : Response to nuclear recoil of the undoped CsI at cryogenic temperature*
2:06 PM–2:18 PM
Presenter:
Yongjin Yang
(University of South Dakota)
Author:
Yongjin Yang
(University of South Dakota)
Collaborations:
Jing Liu, Keyu Ding
Central to our investigation is the behavior of undoped CsI crystals at cryogenic temperatures. This shift is necessitated by SiPMs' requirement for cryogenic operating temperatures to reduce their high dark count rate at room temperature. Notably, undoped CsI demonstrates a significantly higher light yield at 40 Kelvin than its doped counterpart at 300 Kelvin.
The key aspect of our research was conducted at the Triangle Universities Nuclear Laboratory (TUNL), where we measured the Quenching Factor of undoped CsI at 77 K. This measurement is crucial for understanding the response of the detector to nuclear recoil energies. Our findings indicated a quenching factor ranging from 13-18% for nuclear recoil energies between 8.9-51.7 keV in cryogenic CsI (CryoCsI). We will present the experiment and analysis details.
*This work is supported by DOE HEP award DE-SC0022167.
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