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硅漂移室探测器(SDD)的研究工作在我国刚刚起步,与之相匹配的电荷灵敏前置放大器的研究工作尚处于空白。前置放大器是整个探测器系统中不可或缺的一部分,前置放大器的噪声直接影响整个探测器系统的性能指标。电阻反馈、直流光反馈、脉冲光反馈电荷前置放大器由于使用条件受限制、结构复杂、性能存在缺陷等原因,都不能与硅漂移室探测器很好的匹配。
Research work of silicon drift chamber detector (SDD) is just beginning in our country. The research of matching charge-sensitive preamplifier is still in the blank. The preamplifier is an integral part of the detector system. The noise of the preamplifier directly affects the performance of the entire detector system. Resistive feedback, DC optical feedback, pulsed optical feedback charge preamplifier can not be well matched with silicon drift chamber detectors because of the limited use conditions, complex structure and performance defects.