硅remoTES低温量热计的优化研究
Optimization studies of silicon remoTES cryogenic calorimeters
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中文总结 AI 辅助
本研究针对COSINUS实验的Si-remoTES低温量热计，优化了其界面热耦合设计，测试新型Au连接体与三种声子收集器构型，使基线分辨率达（21.5±0.3）eV，提升了探测器性能。
中文摘要 AI 辅助
由COSINUS实验开发的remoTES设计，可让更广泛的材料作为低温量热计运行，并通过过渡边缘传感器（TES）进行读出。该配置中，TES被制作在单独的芯片上，通过金（Au）连接体与吸收体热耦合。remoTES概念已在多种靶材上成功测试。为进一步提升探测器性能并充分利用远程耦合设计的优势，本研究以硅（Si）吸收体为基准开展了一系列优化研究。本工作评估了多项旨在降低热边界电阻、增强Si-remoTES界面（具体为吸收体到声子收集器、声子收集器到TES的界面）信号传输的测量方案。通过测试新型Au连接体设计以及三种不同的声子收集器构型（金、铜、铝（Al）/金），采用Al/Au声子收集器实现了（21.5±0.3）eV的基线分辨率。
英文摘要
The remoTES design, developed within the COSINUS experiment, enables a broader range of materials to be operated as cryogenic calorimeters read out with Transition Edge Sensors (TESs). In this configuration, the TES is fabricated onto a separate chip and thermally coupled to the absorber via a gold (Au) link. The remoTES concept has been successfully tested on various target materials. To further enhance detector performance and to fully exploit the advantages of the remote coupling design a series of optimization studies has been conducted using silicon (Si) absorbers as benchmark. This work presents an evaluation of several measurements aimed at reducing the thermal boundary resistance and enhancing signal transmission across Si remoTES interfaces, specifically from the absorber to the phonon collector and from the phonon collector to the TES. By testing a new Au link design and three distinct phonon collector configurations, Au, copper, and aluminum (Al)/Au, we achieved a baseline resolution of (21.5 +/- 0.3)eV using the Al/Au phonon collector.
