Design of the Vacuum System for the High Energy Ring of an Asymmetric B-Factory Based on PEP
- SLAC
The multi-ampere currents required for high luminosity operation of an asymmetric B factory leads to extremely stressing requirements on a vacuum system suitable for maintaining long beam-gas lifetimes and acceptable background levels in the detector. They present the design for a Cu alloy vacuum chamber and its associated pumping system for the 9 Gev electron storage ring of the proposed B factory based on PEP. The excellent thermal and photo-desorption properties of Cu allows handling the high photon flux in a conventional, single chamber design with distributed ion pumps. The x-ray opacity of the Cu is sufficiently high that no additional lead shielding is necessary to protect the dipoles from the intense synchrotron radiation generated by the beam. The design allows chamber commissioning in < 500 hr of operation.
- Research Organization:
- Stanford Linear Accelerator Center (SLAC), Menlo Park, CA
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 839842
- Report Number(s):
- SLAC-PUB-11106
- Country of Publication:
- United States
- Language:
- English
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