Speaker
Jack ROLPH JACK CHRISTOPHER HUTCHIN
(IHEP)
Description
A proposed highly-granular crystal ECAL for CEPC uses SiPMs to detect photon signals. Radiation-induced SiPM dark noise degrades calorimeter performance. A simulation study was performed to estimate the expected degradation in linearity of response and resolution due radiation damage to SiPMs. Simulations show dark noise causes up to 45% error in reconstructed energy for a 1 GeV electron shower at $1\times10^{10}$ $\mathrm{cm^{-2}}$ fluence. Stochastic and noise resolution terms increase minimally by 0.2% and 1% respectively over the range $1\times10^{7}-1\times10^{10}$ $\mathrm{cm^{-2}}$ fluence. Without irradiation, dark noise from temperature variations within normal operating conditions is negligible.
Primary authors
Baohua Qi
(IHEP)
Jack ROLPH JACK CHRISTOPHER HUTCHIN
(IHEP)
Yong Liu
(Institute of High Energy Physics)
Zhiyu Zhao
(TDLT/SJTU)
