Measurement of Cosmic Ray Flux in China JinPing underground Laboratory

Abstract

China JinPing underground Laboratory (CJPL) is the deepest underground laboratory presently running in the world. In such a deep underground laboratory, the cosmic ray flux is a very important and necessary parameter for rare event experiments. A plastic scintillator telescope system has been set up to measure the cosmic ray flux. The performance of the telescope system has been studied using the cosmic ray on the ground laboratory near CJPL. Based on the underground experimental data taken from November 2010 to December 2011 in CJPL, which has effective live time of 171 days, the cosmic ray muon flux in CJPL is measured to be (2.0+-0.4)*10^(-10)/(cm^2)/(s). The ultra-low cosmic ray background guarantees CJPL's ideal environment for dark matter experiment.

6 pages, 7 figures

References in corpus (1)

• Cosmic Ray Muon Flux at the Sanford Underground Laboratory at Homestake

Cited by in corpus (38)

• The China Jinping Underground Laboratory and its Early Science
• Results of Dark Matter Search using the Full PandaX-II Exposure
• Limits on light WIMPs from the CDEX-1 experiment with a p-type point-contact germanium detector at the China Jingping Underground Laboratory
• First results on low-mass WIMP from the CDEX-1 experiment at the China Jinping underground Laboratory
• Dark Matter Search Results from the Commissioning Run of PandaX-II
• A Search of Low-Mass WIMPs with p-type Point Contact Germanium Detector in the CDEX-1 Experiment
• Measurement of ${}^{19}$F($p$,$\gamma$)${}^{20}$Ne reaction suggests CNO break-out in first stars
• Direct Detection Constraints on Dark Photons with CDEX-10 Experiment at the China Jinping Underground Laboratory
• Muon Flux Measurement at China Jinping Underground Laboratory
• Limits on light WIMPs with a germanium detector at 177 eVee threshold at the China Jinping Underground Laboratory
• Underground nuclear astrophysics: why and how
• Searching for Neutrino-less Double Beta Decay of ${}^{136}$Xe with PandaX-II Liquid Xenon Detector
• Improved limits on solar axions and bosonic dark matter from the CDEX-1B experiment using the profile likelihood ratio method
• Performances of a prototype point-contact germanium detector immersed in liquid nitrogen for light dark matter search
• Material Screening with HPGe Counting Station for PandaX Experiment
• The first result on 76Ge neutrinoless double beta decay from CDEX-1 experiment
• A proposed direct measurement of cross section at Gamow window for key reaction ${}^{19}$F($p$,$\alpha$)${}^{16}$O in Asymptotic Giant Branch stars with a planned accelerator in CJPL
• Study on cosmogenic activation in germanium detectors for future tonne-scale CDEX experiment
• Determination of responses of liquid xenon to low energy electron and nuclear recoils using the PandaX-II detector
• Constraints on the axial-vector and pseudo-scalar mediated WIMP-nucleus interactions from PandaX-4T experiment
• Experimental Limits on Solar Reflected Dark Matter with a New Approach on Accelerated-Dark-Matter-Electron Analysis in Semiconductors
• An Improved Evaluation of the Neutron Background in the PandaX-II Experiment
• Measurement of the fast neutron background at the China Jinping Underground Laboratory
• Neutron background measurements at China Jinping underground laboratory with a Bonner Multi-sphere Spectrometer
• Projected WIMP sensitivity of the CDEX-50 dark matter experiment
• Search for Neutrinoless Double-Beta Decay of ${}^{76}$Ge with a Natural Broad Energy Germanium Detector
• In-situ gamma-ray background measurements for next generation CDEX experiment in the China Jinping Underground Laboratory
• Search for light dark matter from atmosphere in PandaX-4T
• Measurement of Muon-induced Neutron Production at the China Jinping Underground Laboratory
• The CDEX Dark Matter Program at the China Jinping Underground Laboratory
• Cosmic Ray Muons in Laboratories Deep Underground
• Charge reconstruction in large-area photomultipliers
• Neutron-induced nuclear recoil background in the PandaX-4T experiment
• Cosmogenic background study for a 100Mo-based bolometric demonstration experiment at China JinPing underground Laboratory
• Measurement of cosmic-ray muon flux at CJPL-II
• Suppression of accidental backgrounds with deep neural networks in the PandaX-II experiment
• BambooMC -- A Geant4-based simulation program for the PandaX experiments
• Measurement of atmospheric muon angular distribution using a portable setup of liquid scintillator bars