Simulation Studies on the Vertical Emittance Growth in the ATF Extraction Beamline

Technical Report · Tue Dec 18 00:00:00 EST 2007

DOI:https://doi.org/10.2172/921291· OSTI ID:921291

Zhou, F; Amann, J; Selestiky, S; Seryi, A; Spencer, C; Woodley, M

Significant dependence of the vertical emittance growth on the beam intensity was experimentally observed at the ATF/KEK extraction beamline. This technical note describes the simulations of possible vertical emittance growth sources, particularly in the extraction channel, where the magnets are shared by both the ATF extraction beamline and its damping ring. The vertical emittance growth is observed in the simulations by changing the beam orbit in the extraction channel even with all optics corrections. The possible reasons for the experimentally observed dependence of the vertical emittance growth on the beam intensity are discussed. An experiment to measure the emittance vs beam orbit at the existing ATF extraction beamline is proposed.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 921291
• Report Number(s): SLAC-PUB-12892; TRN: US0800944
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM EMITTANCE
BEAM EXTRACTION
MAGNETS
COMPUTERIZED SIMULATION
Accelerators
ACCPHY