Development of microcalorimeter arrays for observing the missing baryon in the universe

开发用于观测宇宙中缺失重子的微量热计阵列

• 批准号: 16340077
• 负责人: ISHISAKI Yoshitaka
• 金额: $ 10.3万
• 依托单位: Tokyo Metropolitan University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16340077/
• 关键词: X-ray; microcalorimeter; transition-edge sensor; adiabatic demagnetization refrigerator; missing baryon; warm-hot intergalactic medium; マイクロカロリーメータ

Aiming to realize TES (Transition-Edge Sensor) microcalorimeter with energy resolution of 2 eV and 16 x 16 pixels, we conducted following studies: (1) evaluation of microcalorimeter device and feed-back to the device fabrication, (2) research for readout system of 256 pixel microcalorimeter signals, (3) investigation of the interface to the adiabatic demagnetization refrigerator (ADR) onboard small scientific satellites. These results are summarized as the proposal document of the DIOS (Diffuse Intergalactic Oxygen Surveyor) mission utilizing a small satellite for mapping the warm-hot intergalactic medium (WHIM) known as the missing baryon in the universe, probing the ionized oxygen lines (OVII, OVIII).We fabricated a device using the sputtering machine at TMU, and conducted in-house processing at ISAS and AIST. The derived energy resolution was 4.8 eV (E/dE=1200) which is the Japanese record (world record is 2.4 eV by NIST group). We also fabricated a 256 pixel devices and succeeded in detecting X-rays with them. As for the readout system, signal readout with 8-input SQUID was investigated. Gamma-ray TES calorimeter attached with a tin absorber was tested, and 40 eV energy resolution at 60 keV was demonstrated. CPA (Chromium Potassium Alum) saltpill for ADR was made by a circulation method, and achieved 60 mK temperature at University of Wisconsin.In parallel, study of clusters of galaxies was performed using the Suzaku satellite launched in July 2005. Monte-carlo simulator including a ray-tracing of the X-ray telescope and the simplified simulation of X-ray CCD camera with a response matrix file (RMF) was developed to analyze spatially extended celestial targets like clusters of galaxies.

为了实现能量分辨率为2 eV和16 x 16像素的TES（Transition-Edge Sensor）微量热计，我们进行了以下研究：（1）微量热计器件的评估和器件制造的反馈，（2）读出研究256 像素微量热计信号系统，(3) 研究小型科学卫星上绝热退磁制冷机 (ADR) 的接口。这些结果被总结为DIOS（弥漫星际氧测量者）任务的提案文件，该任务利用一颗小型卫星绘制被称为宇宙中失踪重子的暖热星际介质（WHIM），探测电离氧谱线（OVII， OVIII).我们使用TMU的溅射机制作了设备，并在ISAS和AIST进行了内部加工。导出的能量分辨率为4.8 eV（E/dE=1200），这是日本的记录（NIST小组的世界记录是2.4 eV）。我们还制作了一个256像素的设备并成功地用它们探测X射线。对于读出系统，研究了8输入SQUID的信号读出。对附有锡吸收器的伽马射线 TES 量热仪进行了测试，并展示了 60 keV 下的 40 eV 能量分辨率。用于ADR的CPA（铬钾明矾）盐丸是通过循环法制造的，并在威斯康星大学达到了60 mK的温度。同时，利用2005年7月发射的朱雀卫星进行了星系团的研究。蒙特卡罗模拟器包括开发了 X 射线望远镜的射线追踪和带有响应矩阵文件 (RMF) 的 X 射线 CCD 相机的简化模拟，以分析空间扩展天体目标，例如星系团。

项目成果

Chandra and XMM-Newton Observations of a Group of Galaxies, HCG 62

钱德拉和 XMM-牛顿对一组星系的观测，HCG 62

• 发表时间: 2006
• 期刊: Publ. Astron. Soc. J. 58
• 作者: U. Morita;Y. Ishisaki;N. Y. Yamasaki;N. Ota;N. Kawano;Y. Fukazawa;T. Ohashi
• 通讯作者: T. Ohashi

Micropare x・ray optics using anisotropic wet etching of(110) silicon wafers

使用 (110) 硅片各向异性湿法蚀刻的 Micropare X 射线光学器件

• 发表时间: 2006
• 期刊: Applied Optics IP 45
• 作者: Y.Ezoe;M.Kshiishi;M.Mita;K.Mitsuda;A.Hoshino;Y.Ishisaki ほか
• 通讯作者: Y.Ishisaki ほか

Development of a microcalorimeter array for the Diffuse Intergalactic Oxygen Surveyor (DIOS) mission

为漫射星际氧气测量者 (DIOS) 任务开发微热量计阵列

• 发表时间: 2004
• 期刊: Optical and Infrared Detectors for Astronomy 5501
• 作者: Y.Ishisaki;T.Ohashi;et al.
• 通讯作者: et al.

Performance of a bridge-type TES microcalorimeter, excess noise characteristics and dependence of sensitivity on current

• DOI: 10.1016/j.nima.2003.12.025
• 发表时间: 2004-05
• 期刊: Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
• 影响因子: 1.4
• 作者: Y. Takei;Keiichi Tanaka;R. Fujimoto;Y. Ishisaki;U. Morita;T. Morooka;T. Oshima;K. Futamoto;T. Hiroike;T. Koga;K. Mitsuda;T. Ohashi;N. Yamasaki;N. Iyomoto;T. Ichitsubo;Kosuke Sato;T. Fujimori;K. Shinozaki;S. Nakayama;K. Chinone

Soft x-ray measurement of the toroidal pinch experiment RX reversed field pinch plasma using transition edge sensor calorimeter

使用过渡边缘传感器热量计对环形箍缩实验 RX 反向场箍缩等离子体进行软 X 射线测量

• 发表时间: 2006
• 期刊: Review of Scientific Instruments 77
• 作者: K. Shinozaki;A. Hoshino;Y. Ishisaki;ほか
• 通讯作者: ほか