A final-focus magnet for PEP-II
Conference
·
OSTI ID:64330
- Lawrence Berkeley Lab., CA (United States)
- Mechanical Engineering Development Lab. Hitachi, Ltd., Ibaraki (Japan)
A compact quadrupole magnet has been designed for the final-focus of the 3GeV {times} 9GeV PEP II B-factory collider being built at SLAC. The magnet system must fit within the particle detector, has no iron, and consists of four nested separately controlled magnets: a two-layer 11.95 T/m quadrupole; a horizontal dipole; a vertical dipole; and a 1.5T solenoid. The 1.1 m long magnet must produce a highly uniform quadrupole field in the 120 mm ID beam pipe. The cryostat is 140 mm ID. (warm), 314 mm OD, and approximately 1.5 m long. The very compact cryogenic suspension system using Ti alloy plates is designed to withstand large forces due to interaction between the field of the detector solenoid and the four nested magnets. Cryogenic services and magnet leads are provided through a single flexible transfer line approximately 4m long.
- Research Organization:
- Lawrence Berkeley Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 64330
- Report Number(s):
- LBL--35421; CONF-941013--41; SC-MAG--457; ON: DE95012372
- Country of Publication:
- United States
- Language:
- English
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