Author :
Ohuchi, N.N. ; Ajima, Yuichiro ; Higashi, N.N. ; Iida, M.M. ; Kimura, N. ; Nakamoto, Takamichi ; Ogitsy, T. ; Ohhata, H.H. ; Shintomi, T.T. ; Sugawara, S.S. ; Sugita, K.K. ; Tanaka, K.K. ; Terashima, Akio ; Tsuchiya, K.K. ; Yamamoto, Akiyasu ; Fujii, T.T.
Abstract :
KEK has developed a superconducting quadrupole magnet, MQXA, for the LHC interaction region. This magnet is required to generate an operating field gradient of 215 T/m in the magnet bore of 70 mm and have an effective magnetic length of 6.37 m. For the accelerator operation, sixteen MQXA magnets will be installed in total for four interaction regions, and the cold tests of ten MQXA magnets of them have been completed. These ten magnets had good quench performance and satisfactory field quality for the requirement of beam optics. This paper describes the production quality and the magnet performance of the MQXA magnets.
Keywords :
accelerator magnets; colliding beam accelerators; ion accelerators; particle beam dynamics; storage rings; superconducting magnets; synchrotrons; 6.37 m; 70 mm; KEK; LHC interaction region; LHC low-beta quadrupole magnets; MQXA; accelerator operation; beam optics; effective magnetic length; field quality; magnet performance; operating field gradient; production quality; quench performance; superconducting quadrupole magnet; Boring; Coils; Large Hadron Collider; Life estimation; Optical beams; Production; Size control; Size measurement; Superconducting magnets; Testing;
