ATLAS ITk Strips 桶部模块的极端热循环可靠性测试
An extreme thermal cycling reliability test of ATLAS ITk Strips barrel modules
AI总结：
本文介绍了ATLAS ITk Strips桶部模块的热循环质量控制程序，包括预生产阶段结果及四个模块100次极端热循环的可靠性评估。
摘要：
在大型强子对撞机（LHC）Run 3结束时，加速器系统将升级为高亮度LHC（HL-LHC），以增加提供给实验的数据总量。为应对数据率、辐射和堆积的增加，ATLAS探测器将进行大幅升级，包括用未来的内部径迹仪（称为ITk）替换内部探测器。ITk将由像素和条形子探测器组成，其中条形部分将由17,888个硅条探测器模块组成。在HL-LHC运行期间，作为运行周期的一部分，ITk将从约${-35}^\circ$C到室温经历多次冷却和加热，包括年度停机期间的升温。为确保ITk Strips模块在这些预期温度变化后功能正常，并确保模块机械坚固，每个模块必须经历十次热循环，并在放置于局部支撑结构之前通过一系列电气和机械标准。本文描述了热循环质量控制（QC）程序，以及桶部预生产阶段（约生产量的5%）的结果。此外，为评估10次循环的名义QC程序的安全裕度，并确保模块不会很快开始失效，四个代表性的ITk Strips桶部模块进行了100次热循环——本研究也在此描述。
英文摘要：
At the end of Run 3 of the Large Hadron Collider (LHC), the accelerator complex will be upgraded to the High-Luminosity LHC (HL-LHC) in order to increase the total amount of data provided to its experiments. To cope with the increased rates of data, radiation, and pileup, the ATLAS detector will undergo a substantial upgrade, including a replacement of the Inner Detector with a future Inner Tracker, called the ITk. The ITk will be composed of pixel and strip sub-detectors, where the strips portion will be composed of 17,888 silicon strip detector modules. During the HL-LHC running period, the ITk will be cooled and warmed a number of times from about ${-35}^\circ$C to room temperature as part of the operational cycle, including warm-ups during yearly shutdowns. To ensure ITk Strips modules are functional after these expected temperature changes, and to ensure modules are mechanically robust, each module must undergo ten thermal cycles and pass a set of electrical and mechanical criteria before it is placed on a local support structure. This paper describes the thermal cycling Quality Control (QC) procedure, and results from the barrel pre-production phase (about 5% of the production volume). Additionally, in order to assess the headroom of the nominal QC procedure of 10 cycles and to ensure modules don't begin failing soon after, four representative ITk Strips barrel modules were thermally cycled 100 times - this study is also described.
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