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Title: Compact double-bunch x-ray free electron lasers for fresh bunch self-seeding and harmonic lasing

Abstract

This study presents a novel method to improve the longitudinal coherence, efficiency and maximum photon energy of x-ray free electron lasers (XFELs). The method is equivalent to having two separate concatenated XFELs. The first uses one bunch of electrons to reach the saturation regime, generating a high power self-amplified spontaneous emission x-ray pulse at the fundamental and third harmonic. The x-ray pulse is filtered through an attenuator/monochromator and seeds a different electron bunch in the second FEL, using the fundamental and/or third harmonic as an input signal. In our method we combine the two XFELs operating with two bunches, separated by one or more rf cycles, in the same linear accelerator. We discuss the advantages and applications of the proposed system for present and future XFELs.

Authors:
 [1];  [2];  [3];  [2];  [4]
  1. Univ. of California, Los Angeles, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Univ. of California, Los Angeles, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1345684
Alternate Identifier(s):
OSTI ID: 1353208; OSTI ID: 1557755
Report Number(s):
LA-UR-18-31097
Journal ID: ISSN 2469-9888; PRABCJ
Grant/Contract Number:  
SC0009983; AC02-76SF00515; 89233218CNA000001
Resource Type:
Published Article
Journal Name:
Physical Review Accelerators and Beams
Additional Journal Information:
Journal Volume: 20; Journal Issue: 3; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; Accelerator Design; Technology; and Operations; X-ray free-electron lasers; self-seeding

Citation Formats

Emma, C., Feng, Y., Nguyen, D. C., Ratti, A., and Pellegrini, C. Compact double-bunch x-ray free electron lasers for fresh bunch self-seeding and harmonic lasing. United States: N. p., 2017. Web. doi:10.1103/PhysRevAccelBeams.20.030701.
Emma, C., Feng, Y., Nguyen, D. C., Ratti, A., & Pellegrini, C. Compact double-bunch x-ray free electron lasers for fresh bunch self-seeding and harmonic lasing. United States. doi:10.1103/PhysRevAccelBeams.20.030701.
Emma, C., Feng, Y., Nguyen, D. C., Ratti, A., and Pellegrini, C. Fri . "Compact double-bunch x-ray free electron lasers for fresh bunch self-seeding and harmonic lasing". United States. doi:10.1103/PhysRevAccelBeams.20.030701.
@article{osti_1345684,
title = {Compact double-bunch x-ray free electron lasers for fresh bunch self-seeding and harmonic lasing},
author = {Emma, C. and Feng, Y. and Nguyen, D. C. and Ratti, A. and Pellegrini, C.},
abstractNote = {This study presents a novel method to improve the longitudinal coherence, efficiency and maximum photon energy of x-ray free electron lasers (XFELs). The method is equivalent to having two separate concatenated XFELs. The first uses one bunch of electrons to reach the saturation regime, generating a high power self-amplified spontaneous emission x-ray pulse at the fundamental and third harmonic. The x-ray pulse is filtered through an attenuator/monochromator and seeds a different electron bunch in the second FEL, using the fundamental and/or third harmonic as an input signal. In our method we combine the two XFELs operating with two bunches, separated by one or more rf cycles, in the same linear accelerator. We discuss the advantages and applications of the proposed system for present and future XFELs.},
doi = {10.1103/PhysRevAccelBeams.20.030701},
journal = {Physical Review Accelerators and Beams},
number = 3,
volume = 20,
place = {United States},
year = {2017},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevAccelBeams.20.030701

Citation Metrics:
Cited by: 3 works
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Works referenced in this record:

Demonstration of self-seeding in a hard-X-ray free-electron laser
journal, August 2012