论文标题
在ILC的SIW-ECAL的位置敏感硅检测器（PSD）的研究
Study of Position Sensitive Silicon Detector (PSD) for SiW-ECAL at ILC
论文作者
论文摘要
我们正在开发位置敏感的硅检测器（PSD），它们在四个角中的每个角都有电极，因此可以通过电极信号获得带电粒子的入射位置。可以通过将PSD引入检测层来改善ILD检测器的电磁热量计（ECAL）的位置分辨率。我们已经开发PSD已有几年了。在先前的制作中，我们发现由于读出阻抗，电荷分离不是最佳的。为了解决该问题，我们产生了具有较高表面电阻的新PSD，表面上具有额外的电阻层。我们还实施了几种技术来减少位置扭曲并增加信噪比，这对于最佳位置分辨率至关重要。原型传感器上的测量正在进行中，包括使用硅垫检测器的ASIC进行辐射源测量和激光测量。
We are developing position sensitive silicon detectors (PSDs) which have an electrode at each of four corners so that incident position of a charged particle can be obtained with signal from the electrodes. It is expected that the position resolution of the electromagnetic calorimeter (ECAL) of the ILD detector will be improved by introducing PSDs to detection layers. We have been developing the PSDs for several years. In the previous production we found that the charge separation is not optimally done due to the readout impedance. To solve the issue, we produced new PSDs with higher surface resistance with an additional resistive layer on the surface. We also implemented several techniques to decrease position distortion and increase signal-to-noise ratio which are essential for the optimal position resolution. The measurements on the prototype sensors are ongoing, including radiation source measurement and laser measurement using an ASIC for silicon pad detectors.
