Author/Authors :
Ajima، نويسنده , , Y. and Higashi، نويسنده , , N. and Iida، نويسنده , , M. and Kimura، نويسنده , , N. and Nakamoto، نويسنده , , T. and Ogitsu، نويسنده , , T. and Ohhata، نويسنده , , H. and Ohuchi، نويسنده , , N. and Shintomi، نويسنده , , T. and Sugawara، نويسنده , , S. and Sugita، نويسنده , , K. and Tanaka، نويسنده , , K. and Taylor، نويسنده , , T. and Terashima، نويسنده , , A. and Tsuchiya، نويسنده , , K. and Yamamoto، نويسنده , , A.، نويسنده ,
Abstract :
High-performance superconducting quadrupole magnets, MQXA, for the LHC low-beta insertions have been designed, manufactured in series and tested. The design field gradient of the quadrupole, which has a coil aperture of diameter 70 mm, was 240 T/m at 1.9 K; its effective length is 6.37 m, and it is required to operate reliably at up to 215 T/m when subjected to radiation heat deposit in the coils of up to 5 W/m. The series of 20 magnets has been produced in industry, and tested at KEK. The magnet design is explained, and the construction and performance of the series units, in terms of training, field quality and geometry, are presented.
Keywords :
Accelerator magnet , LHC insertion magnet , Magnet field quality , Magnet test , superconducting magnet
