介绍了一款新型低噪声电荷灵敏前置放大器的研制。该电荷灵敏前置放大器采用新的自主设计方案,可利用计算机的USB接口直接供电,其电子学等效输入噪声约为0.08 f C,积分非线性为1.8%。该电荷灵敏前置放大器可用于小型半导体核探测谱仪的...介绍了一款新型低噪声电荷灵敏前置放大器的研制。该电荷灵敏前置放大器采用新的自主设计方案,可利用计算机的USB接口直接供电,其电子学等效输入噪声约为0.08 f C,积分非线性为1.8%。该电荷灵敏前置放大器可用于小型半导体核探测谱仪的信号读出放大。集探测器偏置高压、低压电源、电荷灵敏前放、成形电路于一体,体积小、使用方便、噪声低。展开更多
The Dark Matter Particle Explorer(DAMPE) is being constructed as a scientific satellite to observe high energy cosmic rays in space.As a crucial detector of DAMPE,the BGO calorimeter consists of 1848 PMT dynode signal...The Dark Matter Particle Explorer(DAMPE) is being constructed as a scientific satellite to observe high energy cosmic rays in space.As a crucial detector of DAMPE,the BGO calorimeter consists of 1848 PMT dynode signals which bring difficulties in front-end electronics on the space-limited and power-limited satellite platform.To overcome the challenge,a low-noise,low-power and high-integration ASIC chip,named VA32HDR14.2,is taken into account.In order to evaluate the radiation tolerance of the chip in space radiation environment,both single event effect(SEE) and total ionizing dose(TID) tests were performed.The SEE test result shows that the effective linear energy transfer(LET) threshold of single event latch-up(SEL) of the chip is around 23.0 MeVcm^2/mg,which is relatively sensitive,thus protection methods must be taken in the electronics design.The TID test result shows that the TID performance of the chip is higher than 25 Krad(Si),which satisfies the design specification.展开更多
文摘介绍了一款新型低噪声电荷灵敏前置放大器的研制。该电荷灵敏前置放大器采用新的自主设计方案,可利用计算机的USB接口直接供电,其电子学等效输入噪声约为0.08 f C,积分非线性为1.8%。该电荷灵敏前置放大器可用于小型半导体核探测谱仪的信号读出放大。集探测器偏置高压、低压电源、电荷灵敏前放、成形电路于一体,体积小、使用方便、噪声低。
基金Supported by the Strategic Priority Research Program on Space Science,the Chinese Academy of Sciences(No.XDA04040202-4)
文摘The Dark Matter Particle Explorer(DAMPE) is being constructed as a scientific satellite to observe high energy cosmic rays in space.As a crucial detector of DAMPE,the BGO calorimeter consists of 1848 PMT dynode signals which bring difficulties in front-end electronics on the space-limited and power-limited satellite platform.To overcome the challenge,a low-noise,low-power and high-integration ASIC chip,named VA32HDR14.2,is taken into account.In order to evaluate the radiation tolerance of the chip in space radiation environment,both single event effect(SEE) and total ionizing dose(TID) tests were performed.The SEE test result shows that the effective linear energy transfer(LET) threshold of single event latch-up(SEL) of the chip is around 23.0 MeVcm^2/mg,which is relatively sensitive,thus protection methods must be taken in the electronics design.The TID test result shows that the TID performance of the chip is higher than 25 Krad(Si),which satisfies the design specification.
