arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2409.04788physics.ins-det
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使用数字 SiPM 进行 4D 径迹探测

4D-Tracking with Digital SiPMs

Inge Diehl, Finn Feindt, Ingrid-Maria Gregor, Karsten Hansen, Stephan Lachnit, Daniil Rastorguev, Simon Spannagel, Tomas Vanat, Gianpiero Vignola

AI总结:

本文介绍 DESY 基于 150 nm CMOS 工艺研制的数字 SiPM 原型,并通过实验室与 DESY II 束流测试验证其用于带电粒子 4D 径迹探测的空间和时间性能。

摘要:

硅光电倍增管(SiPM)是利用固态探测器进行单光子探测的最先进技术。单光子雪崩二极管(SPAD)是 SiPM 的关键元件,如今已可采用 CMOS 工艺制造,从而便于将 SPAD 阵列集成到定制的单片 ASIC 中。这使得信号数字化、掩蔽、完整击中分布图读出、噪声抑制和光子计数等功能能够在单片 CMOS 芯片中实现,并由此降低片外读出链的复杂性。这些新特性为数字 SiPM 带来了新的应用,例如带电粒子的 4D 径迹探测;该应用要求约 10 μm 量级的空间分辨率,以及时间分辨率为几十 ps 的时间戳记录。DESY 采用 LFoundry 150 nm CMOS 工艺设计了一款数字 SiPM 原型。为评估该传感器在最小电离粒子(MIP)探测中的性能,研究人员在实验室和 DESY II 测试束流设施中开展了多项研究。针对裸原型以及 dSiPM 与薄 LYSO 晶体耦合的组件,研究了带电粒子的直接探测。在利用裸 dSiPM 直接探测 MIP 时,测得约 20 μm 的空间分辨率和约 50 ps 的全系统时间分辨率。通过薄辐射体耦合,可实现大于 99.5% 的效率、低噪声率以及小于 1 ns 的时间分辨率。

英文摘要:

Silicon Photomultipliers (SiPMs) are the state-of-the-art technology in single-photon detection with solid-state detectors. Single Photon Avalanche Diodes (SPADs), the key element of SiPMs, can now be manufactured in CMOS processes, facilitating the integration of a SPAD array into custom monolithic ASICs. This allows implementing features such as signal digitization, masking, full hit-map readout, noise suppression, and photon counting in a monolithic CMOS chip. The complexity of the off-chip readout chain is thereby reduced. These new features allow new applications for digital SiPMs, such as 4D-tracking of charged particles, where spatial resolutions of the order of $10 μm$ and timestamping with time resolutions of a few tens of ps are required. A prototype of a digital SiPM was designed at DESY using the LFoundry $150 nm$ CMOS technology. Various studies were carried out in the laboratory and at the DESY II test-beam facility to evaluate the sensor performance in Minimum Ionizing Particles (MIPs) detection. The direct detection of charged particles was investigated for bare prototypes and assemblies coupling dSiPMs and thin LYSO crystals. Spatial resolution $\sim20 μm$ and a full-system time resolution of $\sim50 ps$ are measured using bare dSiPMs in direct MIP detection. Efficiency $>99.5 \%$, low noise rate and time resolution $<1 ns$ can be reached with the thin radiator coupling.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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