Detector solenoid compensation in the PEP-II B-Factory
- Stanford Univ., CA (United States). Stanford Linear Accelerator Center
- Lawrence Berkeley Lab., CA (United States)
The PEP-II experimental detector includes a strong 1.5 T solenoid field in the interaction region (IR). With the fringe fields, the solenoid extends over a range of 6 m. Additional complications are that (1) it is displaced longitudinally from the interaction point (IP) by about 40 cm, (2) neither beam is parallel to the solenoid axis, and (3) the solenoid overlaps a dipole and a quadrupole on either side of the IP. In each half IR the correction system includes a set of skew quadrupoles, dipole correctors and normal quadrupoles to independently compensate the coupling, orbit perturbation, dispersion and focusing effect produced by the solenoid. The correction schemes for the Low Energy Ring (LER) and for the High Energy Ring (HER) are described, and the impact on the dynamic aperture is evaluated.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (United States); Lawrence Berkeley Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00515; AC03-76SF00098
- OSTI ID:
- 67711
- Report Number(s):
- SLAC-PUB--95-6890; LBL--37227; CONF-950512--97; ON: DE95012562
- Country of Publication:
- United States
- Language:
- English
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