缓解ATLAS ITk条带探测器中的传感器开裂：采用中间层策略
Mitigating Sensor Cracking using the Interposer Strategy in the ATLAS ITk Strip Detector
AI总结：
本文提出在ATLAS ITk条带模块中采用中间层策略，通过添加软粘合剂和kapton隔层解耦热应力，显著减少传感器开裂，并成为该探测器的主要缓解方案。
AI中文摘要：
本文介绍了采用中间层策略来缓解ATLAS ITk条带模块中硅传感器因热应力引起的断裂问题。该策略涉及模块设计的变更，即在模块堆叠中添加软粘合剂层和kapton隔层（称为中间层），以解耦热应力。本文讨论了中间层的设计及其在ATLAS ITk条带桶部中的实施，包括用于验证附加组件的材料测试、将新层集成到模块组装流程中的新工艺开发、原型中间层模块的设计验证和质量控制测试结果，以及表明新设计显著降低传感器所承受热应力的研究。对装载有中间层模块的原型支撑结构的测试表明，在ATLAS运行的相关温度范围内未出现传感器断裂，因此中间层策略被采纳为ATLAS ITk条带桶部中缓解传感器开裂的主要方法。
英文摘要：
This paper introduces the strategy of using an interposing layer to mitigate thermal-stress-induced fracturing of silicon sensors in ATLAS ITk Strip modules. This strategy involves a change in the module design in which layers of soft adhesive and a kapton separator, known as an interposer, are added to the module stack-up to decouple thermal stresses. This paper discusses the interposer design and its implementation in the ATLAS ITk Strip barrel, including material tests to validate the additional components, the development of new processes to integrate the new layers into the module assembly workflow, results from design validation and quality control testing of prototype interposed modules, and studies indicating that the new design significantly reduces the thermal stress experienced by the sensor. Tests of prototype support structures loaded with interposed modules have shown no sensor fractures in the relevant temperature range for operation in ATLAS, resulting in the adoption of the interposer strategy as the primary sensor cracking mitigation in the ATLAS ITk Strip barrel.
