NUCLEAR TECHNIQUES, Volume. 46, Issue 8, 080018(2023)

Rare physical events at China Jinping underground laboratory

Yufeng WANG, Jiaxuan LIU*, Litao YANG**, Zhi ZENG, Hao MA, and Qian YUE
Author Affiliations
  • Department of Engineering Physics, Tsinghua University, Beijing 100084, China
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    China Jinping Underground Laboratory (CJPL) has the deepest rock overburden in the world, which considerably shields the detectors from muons. Thus, it has ultra-low radiation background level and is useful for experiments investigating rare physical events. Previously, experiments including the CDEX (China Dark matter EXperiment), PandaX (Particle and Astrophysical Xenon Experiments), JUNA (Jinping Underground Nuclear Astrophysics Experiment), and neutrino experiment have been carried out at CJPL and have given good results in dark matter detection, neutrinoless double beta decay, and more. This review introduces the construction process of CJPL, and introduces the facilities, results, and future plans of the aforementioned experiments. The CDEX used a high-purity germanium detector array for the dark matter detection and neutrinoless double-beta decay searches; whereas, for the same searches, PandaX used a dual-phase liquid xenon time projection chamber detector. A proton and helium accelerator was used by JUNA to simulate four nuclear reactions that occur in the Universe. A 103-kg prototype was constructed for feasibility verification by the neutrino experiment. The CDEX, PandaX, and JUNA collaboration groups give their latest results, all of which have approached or replaced the best results in the world. These experiments verify the extraordinary experimental conditions at CJPL. With the construction of CJPL-II, we expect an increase in the number of experiments based in Jinping and for further significant results to be achieved.


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    Yufeng WANG, Jiaxuan LIU, Litao YANG, Zhi ZENG, Hao MA, Qian YUE. Rare physical events at China Jinping underground laboratory[J]. NUCLEAR TECHNIQUES, 2023, 46(8): 080018

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    Paper Information

    Category: Research Articles

    Received: Feb. 9, 2023

    Accepted: --

    Published Online: Sep. 19, 2023

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