首页> 外文期刊>Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment >A low-noise preamplifier for γ-ray sensors with add-on device for large-signal management
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A low-noise preamplifier for γ-ray sensors with add-on device for large-signal management

机译:具有用于大信号管理的附加设备的用于γ射线传感器的低噪声前置放大器

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A new charge-sensitive preamplifier for High Purity Germanium γ-ray detectors has been built and tested. It comprises an over-load recovery device that reduces the dead time brought about by hits of energetic particles. The amplitude of the large signals is reconstructed from Time-Over-Threshold measurements performed along the reset transients. Using such a technology an extremely wide energy range of 10keV to 30MeV, or 70dB, is obtained. With a count rate of 6kHz a resolution of 1.1 keV fwhm is obtained on the ~(152)Eu 122keV line and of ~5 perthousand on pulser lines in the energy range of 5-30 MeV.
机译:新型高纯锗γ射线探测器的电荷敏感型前置放大器已经制造和测试。它包括一个过载恢复设备,该设备可减少因高能粒子撞击而造成的停滞时间。大信号的幅度是根据沿重置瞬态执行的跨阈值时间测量而重建的。使用这种技术,可以获得10keV至30MeV的非常宽的能量范围,即70dB。以6kHz的计数率,在〜(152)Eu 122keV线上获得的分辨率为1.1 keV fwhm,在5-30 MeV能量范围内的脉冲发生器线上获得的分辨率为〜5 000。

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