Design and Construction of the PEP-II Low Energy Ring
We describe the design and construction status of theLow-Energy Ring (LER) of the PEP-II project, a collaboration of SLAC,LBNL, and LLNL. In the past year we have optimized LER parameters andstarted component fabrication. By reusing the original wigglers, we wereable to simplify the design of the distributed wiggler photon dump, whichmust dissipate 260 kW of power. The number of RF stations (eachcomprising a klystron powering two 476-MHz cavities) was reduced from 4to 3. We have begun fabrication of the arc vacuum system based on anextruded Al antechamber configuration with discrete photon stops andTSPs. The design of the straight section vacuum components, to befabricated from stainless steel pipe, is also completed. Quadrupoles anddipoles are provided under a collaborative agreement with IHEP (Beijing);correctors and skew quadrupoles are built domestically and sextupoles arerefurbished from existing PEP magnets. LER commissioning will begin earlyin 1998.
- Research Organization:
- Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
- Sponsoring Organization:
- USDOE Director. Office of Science. High EnergyPhysics
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 924775
- Report Number(s):
- LBNL--39123; BnR: KA1501020
- Country of Publication:
- United States
- Language:
- English
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