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2020/1/8

At the international conference ACASC / ASIAN-ICMC / CSSJ JOINT CONFERENCE, we gave an invited talk on cooling technology related to SQUID's seafloor measurement.

「Hybrid cooling system with cryocooler and liquid nitrogen for long period operation of HTS-SQUID monitoring system」 Tsunehiro Hato


2019/12/5

At the International Space Station ISS (INTERNATIONAL SYMPOSIUM ON SUPERCONDUCTIVITY), a special invited lecture was given on seismic observation using the jointly developed SQUID system.

「Development of High-Resolution HTS-SQUID Magnetometer for Observation of Magnetic Signals from Earthquake-Piezomagnetic Effects」 Hiroshi Okubo (Tokyo Metropolitan University)


2019/9/4

The paper was accepted by giving a lecture at the international conference EUROPEAN CONFERENCE ON APPLIED SUPERCONDUCTIVITY.

「Hybrid cooling system with cryocooler and liquid-nitrogen for HTS-SQUID system」 Tsunehiro Hato


2018/12/12

At the International Space Station ISS (INTERNATIONAL SYMPOSIUM ON SUPERCONDUCTIVITY), a special invited lecture was given on metal resource exploration using the jointly developed SQUID system.

"Development of metal exploration system using high-Tc SQUID" Eiichi Arai, Japan Oil and Natural Gas and Metal Mineral Resources Organization (JOGMEC)


2018/10/30

The paper was accepted by giving a lecture at the international conference APPLIED SUPERCONDUCTIVITY CONFERENCE.

「Portable cryostat with temperature control function for operation of HTS-SQUID at higher slew rate」 IEEE Transaction on Appliued Superconductivity (Volume 29, Issue 5. Aug. 2019) Tsunehiro Hato


2018/08/31

"Research on superconducting magnetic sensors that have both ultra-sensitive performance and environmental resistance" has been adopted.

"Research on superconducting magnetic sensors with ultra-high sensitivity performance and environmental resistance" was adopted as a new research subject of the 2018 Security Technology Research Promotion System.


2018/03/17

Received the "Superconductivity Subcommittee Paper Award" from the Japan Society of Applied Physics

Target paper title: “Development of HTS-SQUID System for a Monitoring System of CO2 Enhanced Oil Recovery”, IEEE Trans. Appl. Supercond. 27 (2017 1600705.)

 

Authors: Tsunehiro Hato, Akira Tsukamoto, Seiji Adachi, Yasuo Oshikubo, Keiichi Tanabe (SUSTERA) 

 

   Hidehisa Watanabe, Hidehiro Ishikawa, Riki Okada (Mitsui Metal Resources Development Co., Ltd.)    

 

   Fumito Kato, Makoto Harada, Keita Yoshimatsu, Yosuke Kokushi (JOGMEC)

 

Summary: Proposal of an electromagnetic logging system using a high-temperature superconducting SQUID magnetic sensor with the aim of monitoring the behavior of CO2 diffusion from changes in the electrical resistance of the oil reservoir in enhanced oil recovery (EOR) by injecting CO2 into the reservoir. I went before. This time, we have developed a SQUID magnetometer in which electronics such as a SQUID sensor, a liquid nitrogen cooling container, a SQUID control circuit, an AD conversion circuit, and an electric / optical conversion circuit are mounted in a pressure resistant container. This SQUID magnetometer was placed in a well in the JOGMEC Kashiwazaki test field, and at a depth of about 300 m, it succeeded in receiving a magnetic signal from a transmission coil placed in another well through a steel pipe casing. We also succeeded in receiving a transmission coil signal from a distance of 800 m, demonstrating its applicability to EOR monitoring.