Silicon Detector Technology for the DarkSide-20k Dark Matter Search Experiment

用于 DarkSide-20k 暗物质搜索实验的硅探测器技术

• 批准号: 2878962
• 金额: --
• 依托单位: University of Oxford
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2878962
• 关键词: Silicon; Detector; Technology; DarkSide; 20k

Supervisors: John Lipp (RAL) + Jocelyn Monroe (Oxford University)The nature of dark matter is one of the fundamental questions about the universe today, at the forefront of physics research. Direct detection experiments seek to observe interactions of dark matter particles with atomic nuclei. Detector development in this area has pushed the technology of particle detection to low energies and very low background levels.DarkSide-20k is an international collaboration engaged in a staged program to develop the next generation of liquid argon (LAr) detectors for low-background searches. The 50 tonne DarkSide-20k detector is under construction at the LNGS laboratory, in Gran Sasso, Italy, and will reach more than an order of magnitude increase in the sensitivity over current searches for dark matter particles with masses at the TeV scale. As experiments become increasingly sensitive in search of dark matter, ultra-low backgrounds are required, at levels never before achieved. DarkSide-20k has developed novel silicon photosensor technology and readout that will allow the identification of signal and background events whilst also minimising their own radioactive footprint, a key requirement to minimise backgrounds to the dark matter search. This studentship project is to work on development of the silicon photosensors used in the dark matter search, including testing, installation, data acquisition, simulation and data analysis. The DarkSide-UK groups are building 25% of the photosensors for DarkSide-20k, and the PhD student will contribute to characterising and calibrating the photosensor hardware, and developing analysis tools to search for dark matter interaction signatures in DarkSide-20k data. The project will explore signatures of dark matter interactions in the silicon of the sensor system, with the goal of developing a dark matter search analysis with flexibility to search for signals including exotic dark matter candidates beyond the WIMP dark matter hypothesis.

主管：John Lipp（RAL） + Jocelyn Monroe（牛津大学）暗物质的性质是当今宇宙的基本问题之一，在物理研究的最前沿。直接检测实验试图观察暗物质颗粒与原子核的相互作用。该领域的检测器开发将颗粒检测技术推向低能和非常低的背景级别。Darkside-20k是一项国际合作，从事了一项分阶段计划，以开发下一代液体氩（LAR）探测器进行低背景搜索。在意大利格兰·萨索（Gran Sasso）的LNGS实验室中，正在建造50吨黑暗的20k探测器，而与当前对TEV量表的暗物质粒子相比，灵敏度的敏感性将超过数量级。随着实验越来越敏感地寻找暗物质，需要在从未达到的水平下进行超低背景。 Darkside-20k开发了新颖的Silicon Chotosenor技术和读数，这些技术将允许识别信号和背景事件，同时还可以最大程度地减少自己的放射性足迹，这是将深色物质搜索背景最小化的关键要求。该学生验证项目是为了开发暗物质搜索中使用的硅光传感器，包括测试，安装，数据采集，仿真和数据分析。 Darkside-UK组正在为Darkside-20k建造25％的光传感器，博士生将有助于表征和校准Chotosensor硬件，并开发分析工具以搜索Darkside 20K数据中的暗物质交互签名。该项目将探索传感器系统硅中暗物质相互作用的签名，其目的是开发暗物质搜索分析，灵活地搜索信号，包括wimp暗物质假设以外的异国情调的暗物质候选者。