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Title: Alternative Shapes and Shaping Techniques for Enhanced Transformer Ratios in Beam Driven Techniques

The transformer ration of collinear beam-driven techniques can be significantly improved by shaping the current profile of the drive bunch. To date, several current shapes have been proposed to increase the transformer ratio and produce quasi-uniform energy loss within the drive bunch. Some of these tailoring techniques are possible as a results of recent beam-dynamics advances, e.g., transverse-to-longitudinal emittance exchanger. In ths paper, we propose an alternative class of longitudinal shapes that enable high transformer ratio and uniform energy loss across the drive bunch. We also suggest a simple method based on photocathode-laser shaping and passive shaping in wakefield structure to realize shape close to the theoretically optimized current profiles.
Authors:
 [1] ;  [2]
  1. Northern Illinois U.
  2. Fermilab
Publication Date:
OSTI Identifier:
1326615
Report Number(s):
FERMILAB-CONF-14-365-AD
1321467
DOE Contract Number:
AC02-07CH11359
Resource Type:
Conference
Research Org:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
FNAL-E-0886
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS