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首页> 外文会议>SPIE Astronomical Telescopes + Instrumentation Conference >Commissioning of a common-user test facility to evaluate the effects of high-energy particles on next-generation cryogenic detectors
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Commissioning of a common-user test facility to evaluate the effects of high-energy particles on next-generation cryogenic detectors

机译：调试通用用户的测试设施，以评估高能粒子对下一代低温探测器的影响

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Cosmic rays affect the performance of any detector in space through the creation of spurious signal and/or slow build-up of radiation damage. To mitigate the effects of those high-energy particles on the observations of next-generation space missions, the interaction between state-of-the-art detectors will have to be understood through simulation and experimental verification. We present the first measurement results of a new cryogenic system designed to become a common-user test facility to evaluate the effects of high-energy particles on arrays of these high-sensitivity detectors. The system is based on pulse-tube precooled dilution refrigerator with a large experimental volume ((Φ) = 29 cm, H = 30 cm). At 100 mK the system provides 650 μW of cooling power and an out-of-thc box thermal stability of 76 μK rms. A first experiment with a semiconducting bolometer from the DIABOLO experiment shows a responsivity and noise level consistent with previous measurement in different cryogenic systems. However, the pulse-tube induced vibrations show as clear features in the noise. To irradiate the detectors a particle beam, such as the 25 MeV proton beam of the nearby ALTO facility, can be coupled to one of four ports. Simulations show that the aluminum-coated Mylar windows do not significantly affect the 25 MeV proton beam of TANDEM. First experiments at the ALTO facility for system verification are expected early 2019. Until that time, the thermal stability, vibration damping and EMI shielding will be improved and a flexible wiring will be developed, to accommodate multiple detector types.
机译：宇宙射线会通过创建伪信号和/或缓慢建立辐射损害来影响太空中任何探测器的性能。为了减轻这些高能粒子对下一代太空任务观测的影响，必须通过模拟和实验验证来了解最新探测器之间的相互作用。我们介绍了一种新的低温系统的首次测量结果，该系统旨在成为普通用户测试设备，以评估高能粒子对这些高灵敏度探测器阵列的影响。该系统基于具有大实验体积（（Φ）= 29 cm，H = 30 cm）的脉冲管预冷稀释制冷机。在100 mK时，系统可提供650μW的冷却功率，并具有76μKrms的非常规热稳定性。 DIABOLO实验中使用半导体辐射热计进行的第一个实验显示出与以前在不同低温系统中的测量结果一致的响应度和噪声水平。但是，脉冲管引起的振动在噪声中表现出明显的特征。为了照射检测器，可以将粒子束（例如附近的ALTO设施的25 MeV质子束）耦合到四个端口之一。仿真表明，铝涂层的聚酯薄膜窗口不会显着影响TANDEM的25 MeV质子束。预计将于2019年初在ALTO设施进行系统验证的第一批实验。在此之前，热稳定性，振动阻尼和EMI屏蔽将得到改善，并且将开发出灵活的布线，以适应多种探测器类型。

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