Investigation on the priming effect of a CVD diamond microdosimeter

Investigation on the priming effect of a CVD diamond microdosimeter 1 first-author 1 1 1 1 Shanghai Institute of Nuclear Research, the Chinese Academy of Sciences, Shanghai 201800 Shanghai Institute of Nuclear Research, the Chinese Academy of Sciences, Shanghai 201800 CVD diamond microdosimeter is an ideal substitute of common Si. GaAs detector for extremely strong radiation experimental environment due to its high band gap energy, fast charge collection, low dielectric constant and hardness. In order to improve its character, a CVD diamond microdosimeter was irradiated by a proton dose of 46 Gy, and a lateral micro-ion beam induced charge (IBIC) technique was utilized to characterize it in low beam current (~fA). It was clearly shown that charge collection efficiency and energy resolution were greatly improved after proton irradiation of that dose. Moreover, the homogeneities of both its counting performance and collection efficiency were enhanced. Proton irradiation of 46 Gy has been proved to be an effective way to prime a CVD diamond. CVD diamond microdosimeter Collection efficiency Lateral micro-ion beam induced charge References The RD42 Collaboration, R and D proposal , Development of Diamond Tracking Detectors for High Luminosity Experiments at the LHC. DRDC/P56, CERN/DRDC 94-21 , May. 1994 Development of Diamond Tracking Detectors for High Luminosity Experiments at the LHC. DRDC/P56, CERN/DRDC 94-21 St Gobain/Norton Diamond Film , Goddard Road, Northboro, Ma 01532, USA St Gobain/Norton Diamond Film Meier D. CVD diamond sensors for particle detection and tracking , inaugural dissertation . Physics Department of Heidelberg University , Dusseldorf , 1999 CVD diamond sensors for particle detection and tracking Breese M B. J Appl Phys , 1993 , 74 ( 6 ): 15 J Appl Phys Zhu J Q. Trend Nucl Phys (in Chinese) , 1992 , 9 ( 1 ): 50 Trend Nucl Phys (in Chinese) O474 2002-02-20 2002-08-01 2021-02-05 2002 Nuclear Science and Techniques 3 13