The CUORE cryostat: An infrastructure for rare event searches at millikelvin temperatures
The CUORE cryostat: An infrastructure for rare event searches at millikelvin temperatures
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DOI：
10.1016/j.cryogenics.2019.06.011
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发表时间：
2019-09-01
期刊：
影响因子：
2.1
通讯作者：
Zarra, C.
中科院分区：
文献类型：
--
作者：
Alduino, C.;Alessandria, F.;Zarra, C.
CUORE实验是世界上最大的辐射测量实验。该探测器由988个TeO2晶体组成，总质量为742千克。CUORE目前正在意大利格兰萨索国家实验室收集数据，寻找Te-130的中微子双β衰变。一个大型定制无低温恒温器允许达到并保持类似于10 mK的基本温度，这是探测器最佳操作所需的。该装置的设计是为了实现低噪声环境，对实验的放射性背景贡献最小。在本文中，我们介绍了CUORE低温恒温器的概述，以及其所有子系统的描述，重点介绍了满足严格要求的解决方案。我们简要地说明了低温恒温器调试的各个阶段，并强调了每次实现的相关步骤和里程碑。最后，我们描述了CUORE的成功冷却。
The CUORE experiment is the world's largest bolometric experiment. The detector consists of an array of 988 TeO2 crystals, for a total mass of 742 kg. CUORE is presently taking data at the Laboratori Nazionali del Gran Sasso, Italy, searching for the neutrinoless double beta decay of Te-130. A large custom cryogen-free cryostat allows reaching and maintaining a base temperature of similar to 10 mK, required for the optimal operation of the detector. This apparatus has been designed in order to achieve a low noise environment, with minimal contribution to the radioactive background for the experiment In this paper, we present an overview of the CUORE cryostat, together with a description of all its sub-systems, focusing on the solutions identified to satisfy the stringent requirements. We briefly illustrate the various phases of the cryostat commissioning and highlight the relevant steps and milestones achieved each time. Finally, we describe the successful cooldown of CUORE.