Addressing the impact of non-linearity in superconductive bolometers to test cosmological inflation from space with a CMB polarimeter

解决超导测辐射热计中非线性的影响，使用 CMB 旋光计从太空测试宇宙膨胀

• 批准号: 22K14054
• 负责人: Ghigna Tommaso
• 金额: $ 2.91万
• 依托单位: High Energy Accelerator Research Organization
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Early-Career Scientists
• 财政年份: 2022
• 资助国家: 日本
• 起止时间: 2022-04-01 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22K14054/
• 关键词: TES bolometers; CMB polarimetry; Cosmology; Superconductivity; Transition Edge Sensors; Bolometers; CMB

Concerning the hardware side of this proposal, dark characterization of TES bolometers developed by our colleagues at UC Berkeley is progressing. We have been able to test space-like bolometers and verify the requirements in terms of critical temperature, saturation power and time-constant. A more advanced characterization procedure is being tested and has started producing preliminary results of complex impedance that can complement other methods that make use of multiplexing TES readout.We have also developed a test-bed to perform TES magnetic sensitivity tests that are necessary to inform the design of magnetic shielding structures for future CMB experiments like LiteBIRD. Results have been presented at international conferences and published as conference proceedings.The simulation code has been used to produced a forecast of the impact of detector non-linearity on simulated data. Results have been presented at international conferences and published on a peer reviewed journal.

关于该提案的硬件方面，我们在加州大学伯克利分校的同事开发的TES侧强度计的黑暗表征正在进行中。我们已经能够测试类似空间的强仪，并根据临界温度，饱和功率和时间恒定验证需求。正在测试一个更高级的表征程序，并开始产生复杂阻抗的初步结果，该结果可以补充其他使用多路复用TES读数的方法。我们还开发了一个测试床来执行TES磁性灵敏度测试，这些测试是为磁性屏蔽结构设计的未来CMB实验所必需的，例如Litebird。结果已在国际会议上提出，并作为会议会议发表。该模拟代码已用于预测检测器非线性对模拟数据的影响。结果已在国际会议上提出，并在同行评审期刊上发表。

项目成果

Testing magnetic interference between TES detectors and the telescope environment for future CMB satellite missions

为未来 CMB 卫星任务测试 TES 探测器与望远镜环境之间的磁干扰

• DOI: 10.1117/12.2630091
• 发表时间: 2022
• 期刊: SPIE Proceedings
• 作者: 上村尚平;大木洋;Tommaso Ghigna;Tommaso Ghigna
• 通讯作者: Tommaso Ghigna

Modelling TES non-linearity induced by a rotating HWP in a CMB polarimeter

对 CMB 旋光计中旋转 HWP 引起的 TES 非线性进行建模

• DOI: 10.1007/s10909-023-02939-5
• 发表时间: 2023
• 期刊: Journal of Low Temperature Physics
• 影响因子: 2
• 作者: 上村尚平;大木洋;Tommaso Ghigna
• 通讯作者: Tommaso Ghigna