一种新型多道QDC电路的设计

A New Design for Multi-channel Charge to Digit Conversion

为了满足中子墙探测器对后续能量电子学读出系统的要求并降低成本,本文介绍了一种新型多道电荷-数字转换电路。在该设计中,由于采用了新的设计方法和新的器件,使该电路具有转换速度快,线性好,功耗低、性价比高等突出特点,在大型闪烁体探测器阵列的前端电子学读出系统中有着广泛的应用前景。

In order to improve the performance and decrease the cost of the front-end electronics readout system of the Neutron Wall Detector, a new multi-channel charge to digit conversion （O.DC） circuit designed by us is introduced briefly in this paper, which mainly consists of 32 channels QAC, a judgment circuit and a A/D converter. Since new ways and new devices are adopted, the circuit features high speed of conversion, good linear, low power consumption and low cost. The multi-channel QDC circuit we developed can be widely used in nuclear measurement system of physics experiment with large-scale detector array to form front-end electronics of data acquisition system.