论文标题
CMS量热计端盖升级的前8英寸硅垫传感器原型的中子辐照和电特性
Neutron Irradiation and Electrical Characterisation of the First 8" Silicon Pad Sensor Prototypes for the CMS Calorimeter Endcap Upgrade
论文作者
论文摘要
作为其HL-LHC升级计划的一部分，CMS协作正在用高粒度量热仪（CE）代替其现有的端盖热量表。新的量热仪是用于电磁隔室和纵向读数的采样量热仪。由于其紧凑性，内在的时间分辨率和辐射硬度，硅被选为暴露于较高辐射水平的区域的活性材料。硅传感器被制造为20厘米（8英寸）宽的六角晶片，并分割为几百个垫子，这些垫子单独读取。作为传感器资格策略的一部分，在罗德岛核科学中心（RINSC）进行了8英寸传感器辐照，并在2020-21中进行了电气表征。本文记录了CE的研发计划中此重要里程碑的完成，并提供了有关相关基础架构和程序的详细说明。提出了有关辐照CE硅传感器的电性能的结果。
As part of its HL-LHC upgrade program, the CMS collaboration is replacing its existing endcap calorimeters with a high-granularity calorimeter (CE). The new calorimeter is a sampling calorimeter with unprecedented transverse and longitudinal readout for both electromagnetic and hadronic compartments. Due to its compactness, intrinsic time resolution, and radiation hardness, silicon has been chosen as active material for the regions exposed to higher radiation levels. The silicon sensors are fabricated as 20 cm (8") wide hexagonal wafers and are segmented into several hundred pads which are read out individually. As part of the sensor qualification strategy, 8" sensor irradiation with neutrons has been conducted at the Rhode Island Nuclear Science Center (RINSC) and followed by their electrical characterisation in 2020-21. The completion of this important milestone in the CE's R&D program is documented in this paper and it provides detailed account of the associated infrastructure and procedures. The results on the electrical properties of the irradiated CE silicon sensors are presented.
