A new lattice design for the NLC positron pre-damping ring

Conference · Thu May 30 04:00:00 EDT 2002

OSTI ID:801958

Wolski, A ^[1]

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1. LBNL Library

The positron source for the Next Linear Collider (NLC) will produce a beam larger than the acceptance of the main damping rings, which are optimized for low extracted emittance. A pre-damping ring, with large acceptance, is therefore needed to reduce the emittance of the beam from the source, so it can be accepted by the main damping ring with minimal particle loss. Previous designs, based on a racetrack structure with TME cells in the arcs, have proven difficult to tune for the required dynamic aperture, in part because of the low symmetry. We report here on a new design, with a 10-fold symmetric DBA structure, which meets the principal parameter specifications, and has much greater tuning flexibility.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Director, Office of Science (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 801958
• Report Number(s): LBNL--50509; CBP Note - 424; B& R KA0403011
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
DAMPING
DESIGN
FLEXIBILITY
LINEAR COLLIDERS
POSITRON SOURCES
POSITRONS
SPECIFICATIONS
SYMMETRY
TUNING