Development of radiation-resistant magnet coils for high-intensity beam lines

Author

Tanaka, K.H. ; Yamanoi, Y. ; Noumi, H. ; Takasaki, M. ; Saitoh, Y. ; Kato, K. ; Yokoi, T. ; Tsukada, S. ; Tanno, H.

Author_Institution

Phys. Dept., Nat. Lab. for High Energy Phys., Ibaraki, Japan

Volume

30

Issue

4

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

2511

Lastpage

2514

Abstract

In connection with the Japanese Hadron Facility (JHF) project, the development of new types of radiation-resistant magnet coils has been continued at KEK. One major program is the design and production of a mineral insulation cable (MIC) with a larger maximum current. We have already developed a 2000A-class MIC having a square-cross-section hollow conductor. A sample magnet coil was fabricated with this MIC. Tests of its stability and reliability are under progress. We are now planning to develop a 3000A-class MIC. The other program is R/D work on a completely inorganic wrapping insulation material which can be used like the usual type glass-fiber tape pre-impregnated with epoxy-resin. After tests of the mechanical strength and electric insulation of many combinations of tapes and bonds, we found a pure (99%>) alumina-fiber tape pre-impregnated with inorganic cement that is suitable for a magnet coil insulator after thermal curing

Keywords

beam handling equipment; cable insulation; electromagnets; particle accelerators; reliability; 2000A-class; 3000A-class; Al₂O₃; JHF project; Japanese Hadron Facility; KEK; bonds; electric insulation; epoxy-resin; glass-fiber tape; high-intensity beam lines; inorganic cement; inorganic wrapping insulation material; mechanical strength; mineral insulation cable; pure alumina-fiber tape; radiation-resistant magnet coils; reliability; square-cross-section hollow conductor; stability; tapes; thermal curing; Cable insulation; Coils; Conducting materials; Dielectrics and electrical insulation; Microwave integrated circuits; Minerals; Production; Stability; Testing; Wrapping;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.305788

Filename

305788