Development for multimode radio-detector based on technologies to control a superconducting transition temperature

2018 Fiscal Year Final Research Report

• Project/Area Number: 15K13491
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Kyoto University (2017-2018); High Energy Accelerator Research Organization (2015-2016)
• Principal Investigator: Tajima Osamu 京都大学, 理学研究科, 准教授 (80391704)
• Co-Investigator(Kenkyū-buntansha): 田井野 徹 埼玉大学, 理工学研究科, 准教授 (40359592)
• Research Collaborator: OTANI Chiko
• Project Period (FY): 2015-04-01 – 2019-03-31
• Keywords: 超伝導検出器 / ミリ波

Outline of Final Research Achievements

A compatibility of "high statistics" and "large frequency coverage" is important for any application by using radio detection devises. We have developed a novel multimode detector based on technologies to control a superconducting transition temperature (Tc). A principle of the multimode detector satisfies both the "high statistics" and the "large frequency coverage". However, it is difficult to define a sensitive frequency band without any antenna. This research suggest to define the sensitive band with a control of the Tc because a lower edge of sensitive band depends on the transition temperature of the superconducting material. We established methodology to control Tc based on technology forming multi-layer films. We also developed a readout electronics and its software.

Free Research Field

宇宙・素粒子物理学実験

Academic Significance and Societal Importance of the Research Achievements

超伝導素子は従来の半導体素子と比較して千分の一もの細かな目盛りで計測出来る技術である。超伝導素子を使った検出器により、近年活発に産業応用されているミリ波をはじめとした種々の計測技術が高感度化する。そして、本研究成果はミリ波に対する有感帯域をコントロールする新たな手法を確立した。また、その読み出しエレクトロニクスもまた、超伝導技術を用いた量子コンピュータのビット数を増やす基礎技術となっている。