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多丝漂移室阵列是设计中的低温高密核物质测量谱仪(Cooling storage ring External-target Experiment,CEE)上的前角带电粒子径迹探测器,信号读出的一种备选方案是采用传统前置放大器和采样幅度数字转换器(Analog-to-Digital Converter,ADC)来完成信号的放大和获取,该方案结构较简单,成本适中,而且可以处理单根丝上的多重点火信号。为了进一步降低电子学的通道数目,而又不显著影响探测器的性能,研制了一种扇入延迟电路,将漂移室上不同的多根丝信号进行扇入延迟处理,合成为一路信号后再输入到采样ADC的单个通道进行波形采样和数字化。实际的测试结果表明,该电路对信号处理产生的信号能量展宽好于1%,时间晃动好于500 ps,对应的位置分辨好于25?m,满足漂移室径迹探测器阵列对位置分辨小于300?m的要求。
Multi-wire drift cell arrays are designed as front-angle charged particle track detectors on a cooling storage ring External-target Experiment (CEE). An alternative to signal readout is to use traditional Amplifier and sample-to-digital converter (Analog-to-Digital Converter, ADC) to complete the signal amplification and acquisition, the program structure is simple and affordable and can handle multiple single-wire ignition signal. In order to further reduce the number of channels in the electronics without significantly affecting the performance of the detector, a fan-in delay circuit was developed to fan-delay different multi-wire signals on the drift chamber and synthesize them into one signal Input to a single sample ADC channel for waveform sampling and digitization. The actual test results show that the energy of the signal generated by the signal processing is better than 1%, the time is better than 500 ps and the corresponding position resolution is better than 25 μm, which satisfies the requirement that the position resolution of the drift detector is less than 300? M requirements.