The BESS-Polar Ultra-Thin Superconducting Solenoid Magnet and Its Operational Characteristics During Long-Duration Scientific Ballooning Over Antarctica
| Autor: | Thomas Hams, M. Sasaki, R. E. Streitmatter, Jun-ichi Suzuki, Y. Matsukawa, Akira Yamamoto, Shinya Matsuda, A. Kusumoto, A. Horikoshi, Kenichi Tanaka, John Mitchell, R. Shinoda, Koji Yoshimura, N. Thakur, Masaya Hasegawa, Y. Makida, Kenichi Sakai, Reiko Orito, S. Mizumaki |
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| Rok vydání: | 2009 |
| Předmět: |
Superconductivity
Physics Spectrometer Physics::Instrumentation and Detectors business.industry Astrophysics::High Energy Astrophysical Phenomena Solenoid Persistent current Superconducting magnet Condensed Matter Physics Ballooning Electronic Optical and Magnetic Materials Nuclear physics Optics Electromagnetic coil Magnet Electrical and Electronic Engineering business |
| Zdroj: | IEEE Transactions on Applied Superconductivity. 19:1315-1319 |
| ISSN: | 1558-2515 1051-8223 |
| DOI: | 10.1109/tasc.2009.2017946 |
| Popis: | An ultra-thin superconducting solenoid has been developed for a cosmic-ray spectrometer ballooning over Antarctica, which is named BESS-Polar II. The coil with a diameter of 0.9 m, a length of 1.4 m and a thickness of 3.5 mm, is wound with high-strength aluminum stabilized superconductor and provides 0.8 T in the spectrometer. Based on the experience at the BESS-Polar-I solenoid flight for nine days in 2004, the BESS-Polar-II solenoid, which was cryogenically improved, realized a persistent current mode operation for 25 days in the second flight campaign in December 2007 though January 2008. It has contributed to accumulate the cosmic-ray observation data with 4700 million events and 16 terabyte in a hard disk unit. This report will describe the second solenoid performance during the flight. |
| Databáze: | OpenAIRE |
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