Status of the LHC low-beta insertion quadrupole magnet development at KEK

T. Ogitsu, T. Nakamoto, N. Ohuchi, Y. Ajima, E. Burkhardt, N. Higashi, H. Hirano, M. Iida, N. Kimura, H. Ohhata, K. Tanaka, T. Shintomi, A. Terashima, K. Tsuchiya, A. Yamamoto, T. Orikasa, S. Murai, O. Oosaki

Research output: Contribution to journalConference articlepeer-review

11 Scopus citations

Abstract

The development of the LHC low-beta insertion quadrupole magnets has been conducted at KEK since 1996. After the successful development of short model magnets, the first prototype magnet has been built by Toshiba and is tested at KEK. Although the quench performance and the field quality of the magnet are satisfactory, a design problem is found in one of the end spacers. The problem increases the risk of a turn-to-turn and in fact causes the shorts in the second prototype magnet, and in the trial coil of the first production magnet. The design is modified and the problem appears to be resolved. The construction of the production magnets is now started and it lasts till the summer of 2004.

Original languageEnglish
Pages (from-to)183-187
Number of pages5
JournalIEEE Transactions on Applied Superconductivity
Volume12
Issue number1
DOIs
StatePublished - Mar 2002
Externally publishedYes
Event17th Annual Conference on Magnet Technology - Geneva, Switzerland
Duration: Sep 24 2001Sep 28 2001

Keywords

  • Coil size control
  • Fabrication of full-scale prototype
  • LHC insertion region
  • Superconducting quadrupole

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