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Low alpha experiments at the ALS

Technical Report ·
DOI:https://doi.org/10.2172/125114· OSTI ID:125114
; ;  [1]; ;  [2]
  1. Lawrence Berkeley Lab., CA (United States)
  2. Stanford Linear Accelerator Center, Menlo Park, CA (United States)
The authors present a modified, low alpha lattice for the Advanced Light Source where the quadrupole field strengths have been detuned to allow the momentum compaction factor to be varied smoothly from positive to negative values. With this low alpha lattice the authors decrease the momentum compaction factor by a factor of 5 to 0.0003 over normal operation resulting in a measured bunch length reduction of 2. They also measure the size the second order momentum compaction factor as well as store beam in a negative momentum compaction lattice. Streak camera measurements at positive and negative momentum compaction operation show longitudinal beam profile distributions that are in agreement with simulations by Fang et al.
Research Organization:
Stanford Linear Accelerator Center, Menlo Park, CA (United States); Lawrence Berkeley Lab., CA (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
AC03-76SF00098; AC03-76SF00515
OSTI ID:
125114
Report Number(s):
SLAC-PUB--95-7015; LBL--37802; CONF-9509227--4; ON: DE96001095
Country of Publication:
United States
Language:
English

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