Title :
Magnetic field characteristics of the low-beta quadrupole magnets, MQXA, for LHC
Author :
Ohuchi, Norihito ; Ajima, Yasuo ; Nakamoto, Tatsushi ; Ogitsu, Toru ; Shintomi, Takakazu ; Sugita, Kei ; Tsuchiya, Kiyosumi ; Yamamoto, Akira
Author_Institution :
KEK High Energy Accelerator Res. Organ., Ibaraki, Japan
fDate :
6/1/2004 12:00:00 AM
Abstract :
As a part of the collaboration program between CERN and KEK for the LHC, KEK has developed a superconducting low-beta quadrupole magnet, MQXA. KEK will supply 18 MQXA magnets, and 16 magnets will be installed in total in the four interaction regions. The cold tests of 13 magnets have been completed. Systematic field measurements were performed on these magnets, and these 13 magnets had satisfactory field quality for the requirement of beam optics. This paper describes the magnetic field behavior of the 13 MQXA magnets from the viewpoint of accelerator operation.
Keywords :
accelerator magnets; magnetic cooling; magnetic field measurement; production testing; proton accelerators; storage rings; superconducting magnets; synchrotrons; CERN; KEK; LHC interaction regions; Large Hadron Collider; MQXA; accelerator operation; beam optics; cold tests; field quality; low-beta quadrupole magnets; magnetic field measurement; superconducting quadrupole magnet; Coils; Collaboration; Current measurement; Large Hadron Collider; Length measurement; Magnetic field measurement; Magnetic fields; Optical beams; Performance evaluation; Superconducting magnets; LHC interaction region; magnetic field measurements; superconducting magnet;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2004.829044
