Ultra-cold window for high-sensitive radio sensing
| Project/Area Number |
25610064
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | High Energy Accelerator Research Organization |
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Principal Investigator |
Tajima Osamu 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 准教授 (80391704)
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| Co-Investigator(Renkei-kenkyūsha) |
Kawai Masanori 大学共同利用機関法人 高エネルギー加速器研究機構, 素粒子原子核研究所, 技師 (50391735)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 宇宙マイクロ波背景放射 / CMB / 極低温 / ミリ波 / 電波測定装置 / 電波観測 / 超伝導検出器 / 断熱 / 冷凍機 / 口径 |
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| Outline of Final Research Achievements |
In a field of a high-sensitive radio sensing, e.g. observation of the cosmic microwave background radiation, our main approach for improving the sensitivity of the system is a combination low-temperature detectors (i.e., low noise) and a large aperture (i.e., high photon statistics). A big difficulty of this approach is that the large aperture induces extra thermal radiations, i.e. infra-red radiations, into the low-temperature detectors. We invented a technology to solve this difficulty: Radio-transparent multi-layer insulation, named RT-MLI. The RT-MLI is transparent for the radio, however, it effectively reflects the infra-red radiations. We proofed this technology based on the laboratory tests. We also developed various applications, e.g. prevention of dew condensation in a meteorological atmospheric monitor.
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Report
(4 results)
Research Products
(25 results)
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[Journal Article] GroundBIRD: Observing Cosmic Microwave Polarization at Large Angular Scale with Kinetic Inductance Detectors and High-Speed Rotating Telescope2015
Author(s)
S. Oguri, J. Choi, T. Damayanthi, M. Hattori, M. Hazumi, H. Ishitsuka, K. Karatsu, S. Mima, M. Minowa, T. Nagasaki, C. Otani, Y. Sekimoto, O. Tajima, N. Tomita, M. Yoshida, E. Won
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Journal Title
J. Low Temp. Phys.
Volume: online 30 Dec.
Issue: 3-4
Pages: 1-7
DOI
Related Report
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
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