[2] WANG M Y, LI Z Y, CAIY H, et al. Ultralow-Noise Single-Photon Detection Based on Precise Temperature Controlled Photomultiplier with Enhanced Electromagnetic Shielding[J]. Chinese Optics Letters, 2017, 15(10): 11-14.

[5] ZHANG H Y, YU Y H, Khuram T, et al. Photo. multiplier tube performance of the WCDA++ in the LHAASO experiment[J]. Nuclear Inst. and Methods in Physics Research, A, 2020, 958.

[6] KIM J H, BACK H K, JOO K S. Development of a wireless radiation detection backpack using array sili. con-photomultiplier[J]. Nuclear Engineering and Technology, 2020, 52(2).

[17] KAY, ART. Operational Amplifier Noise: Tech. niques and Tips for Analyzing and Reducing Noise[M]. Boston: Newnes, 2012.