Superconducting Dipole Magnet for Strangeness Physics Program at J-PARC
- Authors
- Ahn, Jung Keun; Kim, Sung Hyun; Kim, Shin Hyung; Imai, Kenichi; Sako, Hiroyuki; Choi, Seyong; Takahashi, Toshiyuki
- Issue Date
- 6월-2016
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Conduction cooling; Helmholtz-type; J-PARC; time projection chamber
- Citation
- IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, v.26, no.4
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
- Volume
- 26
- Number
- 4
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/88541
- DOI
- 10.1109/TASC.2016.2517023
- ISSN
- 1051-8223
- Abstract
- A large-acceptance superconducting dipole magnet is currently under construction for extensive strangeness nuclear physics programs at Japan Proton Accelerator Research Complex (J-PARC), Japan. The conduction-cooled superconducting magnet is composed of two circular coils with a radius of 500 mm, vertically 500 mm apart from each other. This Helmholtz-type magnet was designed to keep the field uniformity B-r/B-y at the level of 1% over the inner region of 500 mm in diameter and 500 mm in height. Our main detector is a time projection chamber that uses parallel E and B fields. If there is a transverse component, drifting electrons would take helical paths due to the (E) over right arrow x (B) over right arrow effect. As a result, the field uniformity is crucial in the design of the magnet. The maximum field strength is 1.5 T. We report our design study and coil test results using a test cryochamber.
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