p/π+ response of single layer THGEM detector in Ar+3% iC4H10

HONG Dao-Jin; YU Bo-Xiang; LIU Hong-Bang; HE Xiao-Rong; AN Guang-Peng; CHEN Hai-Tao; CHEN Shi; HU Tao; LI Jia-Cai; LIU Qian; NIU Shun-Li; RUAN Xiang-Dong; XIE Yi-Gang; ZHANG Xuan; ZHENG Yang-Heng

doi:10.1088/1674-1137/39/9/096002

Chinese Physics C> 2015, Vol. 39> Issue(9) : 096002 DOI: 10.1088/1674-1137/39/9/096002

p/π⁺ response of single layer THGEM detector in Ar+3% iC₄H₁₀

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In this work, we study the response of a single layer Thick Gaseous Electron Multiplier (THGEM) detector to p/π⁺ at the E3 line of the Beijing Test Beam Facility. The THGEM detector drift gap used in this study is 4 mm, and the gain of the detector operated in Ar+3% iC₄H₁₀ is about 2000. p/π⁺ particles at momenta between 500 MeV/c and 1000 MeV/c are distinguished by a Time Of Flight system. Our results show that at the measured momenta, detection efficiencies for p are from 93% to 99%, and for π ⁺ in the range of 82%-88%. Meanwhile, simple Geant4 simulations also have been done, and are consistent with the amplitude spectra of the beam test results. We preliminarily study the feasibility of the THGEM detector as a sampling element for a Digital Hadronic Calorimeter (DHCAL), which may provide support for the possible application of a THGEM detector in the Circular Electron Positron Collider (CEPC) HCAL.

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HONG Dao-Jin, YU Bo-Xiang, LIU Hong-Bang, HE Xiao-Rong, AN Guang-Peng, CHEN Hai-Tao, CHEN Shi, HU Tao, LI Jia-Cai, LIU Qian, NIU Shun-Li, RUAN Xiang-Dong, XIE Yi-Gang, ZHANG Xuan and ZHENG Yang-Heng. p/π⁺ response of single layer THGEM detector in Ar+3% iC₄H₁₀[J]. Chinese Physics C, 2015, 39(9): 096002. doi: 10.1088/1674-1137/39/9/096002

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Received: 2014-11-25
Revised: 2015-04-14

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沈阳化工大学材料科学与工程学院沈阳 110142

p/π⁺ response of single layer THGEM detector in Ar+3% iC₄H₁₀

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p/π⁺ response of single layer THGEM detector in Ar+3% iC₄H₁₀

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