论文标题
Micropattern气体检测器中串扰的模型
A Model for Crosstalk in Micropattern Gas Detectors
论文作者
论文摘要
串扰特性（例如脉冲振幅和形状）通过MPGD内的电容耦合的简单PSPICE模型进行了研究。串扰脉冲形状可以理解为cr差异剂。串扰可以通过多个电容耦合路径同时发生。如果通过电流源（如正常检测器操作）或通过外部电压脉冲发生器在台式测试中所做的，这些路径上的串扰信号以不同的检测器操作或通过电压源诱导的信号添加不同。使用模型研究了一些减少串扰的方法。它表明，面对读数结构到地面的放大电极的低阻抗AC路径对于最小化串扰很重要。这意味着需要足够大的放大电极到地面的电容。该结果对可以分割的不产生串扰的情况可以分割多少这种放大电极会产生后果。
Crosstalk characteristics such as pulse amplitude and shape are studied with a simple PSpice model of the capacitive couplings within an MPGD. The crosstalk pulse shape can be understood as due to a CR-differentiator. Crosstalk can occur simultaneously through more than one capacitive coupling path. The crosstalk signals on these paths add differently if the signal is induced via a current source as in normal detector operation or via a voltage source as is often done in benchtop tests with an external voltage pulse generator. A few means for reducing the crosstalk are investigated with the model. It shows that a low-impedance AC path from the amplification electrode that faces the readout structure to ground is important for minimizing crosstalk. This implies a need for a sufficiently large capacitance of that amplification electrode to ground. This result has consequences for how much such an amplification electrode can be segmented without incurring crosstalk.
