A SPICE model for Si microstrip detectors and read-out electronics
A SPICE model for Si microstrip detectors and read-out electronics
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DOI：
10.1109/23.506666
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发表时间：
1996-06
影响因子：
1.8
通讯作者：
N. Bacchetta;D. Bisello;C. Calgarotto;A. Candelori;A. Paccagnella
中科院分区：
文献类型：
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作者：
N. Bacchetta;D. Bisello;C. Calgarotto;A. Candelori;A. Paccagnella
我们研制了一种硅微带探测器的SPICE模型及其读出电子学。采用RC网络实现了交流耦合单面多晶硅偏置硅微带探测器的SPICE模型。通过与直流和交流测量结果的直接比较，确定了该模型的主要参数。模拟得到的带间耦合阻抗和相角与实验结果吻合较好，频率最高可达1 MHz。我们使用PreShape 32作为我们的读出芯片，用于模拟和测量。它由电荷灵敏前置放大器、整形器和缓冲器组成。模拟电离粒子电荷信号的电流脉冲被施加到单条的一端。为了评估模型的质量，对其沿条带和读出电子的传播进行了实验研究，并与SPICE结果进行了比较。对SPICE参数进行了调整，以符合实验结果，其中每个条带都连接到读出电子设备，并对我们所考虑的不同读出配置保持相同。通过在PS32芯片的读出通道之间再增加两个模拟寄生贡献的电容，在信号的上升沿和下降沿都达到了实验数据与模拟曲线的满意匹配。这种一致性只对远离已施加信号的条带的条带恶化。
We have developed a SPICE model of silicon microstrip detector and its read-out electronics. The SPICE model of an AC-coupled single-sided polysilicon-biased silicon microstrip detector has been implemented by using a RC network containing up to 19 strips. The main parameters of this model have been determined by direct comparison with DC and AC measurements. The simulated interstrip and coupling impedance and phase angle are in good agreement with experimental results, up to a frequency of 1 MHz. We have used the PreShape 32 as our read-out chip for both the simulation and the measurements. It consists of a charge sensitive preamplifier followed by a shaper and a buffer. A current pulse, simulating the charge signal of an ionizing particle, has been applied to one end of a single strip. Its propagation along the strips and the read-out electronics has been experimentally studied and compared to the SPICE results in order to assess the quality of the model. The SPICE parameters have-been adjusted to fit the experimental results obtained for the configuration where every strip is connected to the read-out electronics and kept the same for the different read-out configurations we have considered. By adding 2 further capacitances simulating the parasitic contributions between the read-out channels of the PS32 chip, a satisfactory matching between the experimental data and the simulated curves has been reached on both rising and trailing edges of the signal. Such agreement deteriorates only for strips far from the strip where the signal has been applied.