论文信息 - Magnetic field characteristics of the low-beta quadrupole magnets, MQXA, for LHC

Magnetic field characteristics of the low-beta quadrupole magnets, MQXA, for LHC

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.

[1] R. Ostojić. Superconducting magnets for LHC insertions , 2004, IEEE Transactions on Applied Superconductivity.

[2] N. Kimura,et al. Magnetic field measurements of the prototype LHC-IR MQXA at 1.9 K , 2002 .

[3] N. Kimura,et al. A pressurized He II cryogenic system for the superconducting magnet test facility at kek , 2002 .

[4] A. Yamamoto,et al. Magnetic design of a low-/spl beta/ quadrupole magnet for the LHC interaction regions , 2000, IEEE Transactions on Applied Superconductivity.

[5] A. Yamamoto,et al. Design study of a superconducting insertion quadrupole magnet for the Large Hadron Collider , 1997, IEEE transactions on applied superconductivity.