The R&D and physics of mini neutrino detectors

by Prof. Jing Liu(刘晶） (University of South Dakota)

Monday 3 Jul 2023, 10:00 → 12:00 Asia/Shanghai

Tsung-Dao Lee library/Fourth Floor-410 - 410# Meeting Room (Tsung-Dao Lee Library)

Abstract:

Neutrinos are the most abundant particles in the universe except for photons. However, the detection of neutrinos is very difficult because they only interact weakly with matter. Most neutrino detectors are huge and costly due to the same reason. Wouldn’t it be nice if the mass of neutrino detectors can be reduced to 10 to 100 kg scale? If yes, what kind of R&D challenge will we face? And what kind of physics we can learn from a small neutrino detector? I’d like to use the COHERENT experiment at the Spallation Neutron Source (SNS), Oak Ridge National Laboratory, US, as an example to answer these questions. The SNS, though designed as a neutron source, produces neutrinos at a few tens of MeV. The COHERENT Collaboration operates multiple small neutrino detectors near the SNS and observed the process of Coherent Elastic Neutrino-Nucleus Scattering (CEvNS) in 2017 using a ~16 kg CsI detector. An upgrade of the system is planned to detect 10 times more neutrinos with the same exposure, which would significantly increase its sensitivities to physics beyond the standard model.

Biography:

• 2020 至今，美国南达科他大学物理系 副教授、博士生导师

• 2014-2020，美国南达科他大学物理系 助理教授、博士生导师

• 2011，2018，美国劳伦兹伯克利国家实验室，斯坦福大学 访问学者

• 2009-2014，日本东京大学数物连携宇宙研究所 博士后

 

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