论文标题
使用Altiroc 0前端芯片在AC-LGADS中形成信号和共享
Signal formation and sharing in AC-LGADs using the ALTIROC 0 front-end chip
论文作者
论文摘要
在四个维度上提供高分辨率的探测器的开发引起了科学界的广泛兴趣，用于在高能物理学，核物理，医学成像，质谱以及量子信息中应用。但是，找到能够实现这种愿望的技术被证明是一项艰巨的任务。在其他基于硅的候选人中，低增益雪崩二极管（LGAD）已经显示出出色的计时性能，但事实证明不适合精细的像素化。因此，引入了AC耦合LGAD（AC-LGAD）方法，以在时间和空间中提供高分辨率，使其成为未来4D检测器的有前途的候选人。但是，必须开发适当的读取电子设备，以匹配传感器的快速和细节功能。目前，这是一个主要的技术挑战。在本文中，我们测试了AC-LGAD原型的快速ASIC ALTIROC 0，该原型最初是为HL-LHC的ATLAS实验读数而开发的。分析了由$^{90} $ SR源或重点的红外激光器产生的信号。本文详细介绍了使用读取芯片对AC-LGAD传感器进行首次成功读数。该结果将为新一代基于AC-LGAD的4D检测器的设计和构建铺平道路。
The development of detectors that provide high resolution in four dimensions has attracted wide-spread interest in the scientific community for applications in high-energy physics, nuclear physics, medical imaging, mass spectroscopy as well as quantum information. However, finding a technology capable of fulfilling such aspiration proved to be an arduous task. Among other silicon-based candidates, the Low-Gain Avalanche Diode (LGAD) has already shown excellent timing performances but proved to be unsuitable for fine pixelization. Therefore, the AC-coupled LGAD (AC-LGAD) approach was introduced to provide high resolution in both time and space, making it a promising candidate for future 4D detectors. However, appropriate readout electronics must be developed to match the sensor's fast-time and fine-pitch capabilities. This is currently a major technological challenge. In this paper, we test AC-LGAD prototypes read out by the fast-time ASIC ALTIROC 0, originally developed for the readout of DC-coupled LGADs for the ATLAS experiment at the HL-LHC. Signal generated by either betas from a $^{90}$Sr source or a focused infra-red laser were analyzed. This paper details the first successful readout of an AC-LGAD sensor using a readout chip. This result will pave the way for the design and construction of a new generation of AC-LGAD-based 4D detectors.
