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Title: Method of controlling coherent synchroton radiation-driven degradation of beam quality during bunch length compression

Abstract

A method of avoiding CSR induced beam quality defects in free electron laser operation by a) controlling the rate of compression and b) using a novel means of integrating the compression with the remainder of the transport system: both are accomplished by means of dispersion modulation. A large dispersion is created in the penultimate dipole magnet of the compression region leading to rapid compression; this large dispersion is demagnified and dispersion suppression performed in a final small dipole. As a result, the bunch is short for only a small angular extent of the transport, and the resulting CSR excitation is small.

Inventors:
 [1];  [2]
  1. Newport News, VA
  2. Williamsburg, VA
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1069083
Patent Number(s):
8,217,596
Application Number:
12/381,954
Assignee:
Jefferson Science Associates, LLC (Newport News, VA)
DOE Contract Number:  
AC05-06OR23177
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Douglas, David R, and Tennant, Christopher D. Method of controlling coherent synchroton radiation-driven degradation of beam quality during bunch length compression. United States: N. p., 2012. Web.
Douglas, David R, & Tennant, Christopher D. Method of controlling coherent synchroton radiation-driven degradation of beam quality during bunch length compression. United States.
Douglas, David R, and Tennant, Christopher D. 2012. "Method of controlling coherent synchroton radiation-driven degradation of beam quality during bunch length compression". United States. https://www.osti.gov/servlets/purl/1069083.
@article{osti_1069083,
title = {Method of controlling coherent synchroton radiation-driven degradation of beam quality during bunch length compression},
author = {Douglas, David R and Tennant, Christopher D},
abstractNote = {A method of avoiding CSR induced beam quality defects in free electron laser operation by a) controlling the rate of compression and b) using a novel means of integrating the compression with the remainder of the transport system: both are accomplished by means of dispersion modulation. A large dispersion is created in the penultimate dipole magnet of the compression region leading to rapid compression; this large dispersion is demagnified and dispersion suppression performed in a final small dipole. As a result, the bunch is short for only a small angular extent of the transport, and the resulting CSR excitation is small.},
doi = {},
url = {https://www.osti.gov/biblio/1069083}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 10 00:00:00 EDT 2012},
month = {Tue Jul 10 00:00:00 EDT 2012}
}