Author :
Yamamoto, A. ; Nakamoto, T. ; Ogitsu, T. ; Ohuchi, N. ; Ajima, Y. ; Higashi, N. ; Iida, M. ; Kimura, N. ; Ohhata, K. ; Shintomi, T. ; Sugawara, S. ; Sugita, K. ; Tanaka, K. ; Terashima, A. ; Tsuchiya, K. ; Fujii, T. ; Hashiguchi, E. ; Kanahara, T. ; Murai
Author_Institution :
High Energy Accelerator Res. Organ., KEK, Tsukuba, Japan
Abstract :
The inner triplet quadrupole magnets (MQXA) for the LHC low-beta insertion have been developed. The quadrupoles provide a field gradient of 215 T/m at 1.9 K in a coil aperture of 70 mm diameter and with an effective magnetic length of 6.37 m. The series of 20 magnets have been produced in industry, and full testing has been done at KEK. We present an overview of the production and the results from mechanical and magnetic measurements.
Keywords :
accelerator magnets; colliding beam accelerators; magnetic field measurement; mechanical variables measurement; production; proton accelerators; storage rings; superconducting magnets; synchrotrons; 1.9 K; 6.37 m; 70 mm; KEK; LHC; MQXA series; field measurement; inner triplet quadrupole magnets; low-beta insertion quadrupole; magnet testing; magnetic measurements; mechanical measurement; superconducting accelerator magnet; Apertures; Large Hadron Collider; Magnetic field measurement; Magnetic flux; Production; Prototypes; Size measurement; Superconducting coils; Superconducting magnets; Testing; Field measurement; low-beta insertion quadrupole; superconducting accelerator magnet;
