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Title: Luminosity with more bunches in PEP

Technical Report ·
DOI:https://doi.org/10.2172/6277847· OSTI ID:6277847

The near term accelerator physics program for PEP includes experiments in a collider mode with up to 9 bunches in each beam. In this memo, luminosity data from the 3 {times} 3 configuration is first used to calculate vertical beam size, emittance and tune shift as a function of current. The data is then used to extrapolate to the case with either 6 {times} 6 or 9 {times} 9 bunches colliding in PEP. Vertical emittance growth from the separated bunch optics and dispersion at the IP are included in the calculations. The conclusion is that given a 90 mA current drive limitation in PEP, operating with 6 {times} 6 bunches yields the maximum luminosity. 9 refs., 6 figs.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
DOE/ER
DOE Contract Number:
AC03-76SF00515
OSTI ID:
6277847
Report Number(s):
PEP-NOTE-384; ON: DE91005770; TRN: 91-001682
Country of Publication:
United States
Language:
English