Superconducting solenoid and its cooling system for pulsed muon channel

Author

Nagamine, K. ; Nakayama, H. ; Imazato, J. ; Kuno, Y. ; Fujiwara, M. ; Yamamoto, A. ; Yamazaki, T.

Author_Institution

University of Tokyo, Bunkyo-ku, Japan

Volume

17

Issue

5

fYear

1981

fDate

9/1/1981 12:00:00 AM

Firstpage

1882

Lastpage

1885

Abstract

A large superconducting solenoid and on-line cooling system was constructed for π-μ decay section in a pulsed muon channel at the KEK Booster Synchrotron. Its dimension is 12 cm bore and 6 m length and the central field is 5 T. Following the design taken at SIN, the solenoid is indirectly cooled by a forced flow of supercritical He. The important features of our system are as follows : 1) The supercritical He is produced by a heat exchanger built inside the cold box (single SHE exchanger) simplifying cryostat design and system control ; 2) Magnet cryostat has warm-iron structure as a vacuum wall with LN2shield. The system has been operational for more than 1500 h since July 1980. The paper describes conceptual designs, some details of construction and performances of the system.

Keywords

Accelerator magnets, superconducting; Booster synchrotrons; Magnetic thermal factors; Meson beams; Boring; Centralized control; Cooling; Force control; Helium; Mesons; Silicon compounds; Solenoids; Superconducting magnets; Synchrotrons;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1981.1061295

Filename

1061295