Expanding the timing frontier: precision timing for particle tracking and identification

扩大计时前沿：粒子跟踪和识别的精确计时

• 批准号: ST/X005062/1
• 负责人: Karolos Potamianos
• 金额: $ 36.68万
• 依托单位: University of Warwick
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FX005062%2F1
• 关键词: Expanding; timing; frontier; precision; particle

The large increase in pileup (overlapping proton-proton interactions) at the HL-LHC is one of the leading experimental challenges for its physics programme. The effects of pileup can be mitigated with a novel and powerful approach: using high-precision timing information to resolve collisions occurring very close in space but well-separated in time, i.e., enabling tracking in 4D rather than in 3D as currently done.To achieve this, the development of novel detectors achieving first-rate position resolution together with a timing of a few tens of picoseconds is crucial. Low-Gain Avalange Diode sensors (LGADs) have shown a suitable time response but they do not allow for the formation of small nor are yet radiation hard enough to operate in the innermost layers of the ATLAS ITk pixel detector or to be included in the upgrades of the LHCb experiment. Promising options under development to reach ultra-fast timing are 3D sensors, where the electrodes penetrate the bulk, and monolithic active sensors.To advance the development of these novel sensors for the upgrades of LHC experiments and prepare for experiments at future colliders, improved instrumentation providing fast timing capability is crucial. Such devices will also bring unprecedented opportunities across all of the STFC's areas and facilities.This grant will permit the procurement of a 12 GHz signal generator, a fast oscilloscope (<8ps per sample), and a logic analyser. These will enable the proper characterisation of ultra-fast silicon detectors and associated readout at realistic operating conditions, in particular enabling precise measurements of their (ultra-fast) response signals.The equipment will also enable the characterisation of fast silicon light sensors (SiPMs) towards their use is large-scale arrays for the detection of dark matter.Detector development is the engine of discovery in particle physics. This proposal aims to procure the necessary equipment to develop new technologies to ensure vitality of our field in the UK, and to future-proof STFC research through active R&D, with outstanding discovery potential for the future.

在HL-LHC中堆积（重叠的质子-质子相互作用）的大量增加是其物理学计划的主要实验挑战之一。可以通过一种新颖而强大的方法来减轻堆积的影响：使用高精度的定时信息来解决在空间上非常接近但在时间上分离良好的碰撞，即，实现4D跟踪，而不是目前的3D跟踪。为了实现这一目标，开发能够实现一流位置分辨率和几十微微秒计时的新型探测器至关重要。低增益平均范围二极管传感器（LGAD）已经显示出合适的时间响应，但它们不允许形成小的辐射，也不足以在ATLAS ITk像素探测器的最内层中操作或被包括在LHCb实验的升级中。正在开发的有希望实现超快计时的选择是3D传感器，其中电极穿透主体，以及单片有源传感器。为了推进这些新型传感器的开发，以升级LHC实验并为未来对撞机的实验做好准备，改进仪器以提供快速计时能力至关重要。这些设备也将为STFC的所有领域和设施带来前所未有的机会。这笔赠款将允许采购12 GHz信号发生器，快速示波器（每个样本<8 ps）和逻辑分析仪。这些设备将使超快硅探测器和相关的读出在现实的操作条件下，特别是使其（超快）响应信号的精确测量的适当的特性。该设备还将使快速硅光传感器（SiPM）的特性，对他们的使用是大规模阵列的暗物质的检测。探测器的发展是发现粒子物理学的引擎。该提案旨在采购必要的设备来开发新技术，以确保我们在英国的领域的活力，并通过积极的研发来进行面向未来的STFC研究，并为未来提供出色的发现潜力。