skip to main content

Title: High-Power Laser Pulse Recirculation for Inverse Compton Scattering-Produced Gamma-Rays

Inverse Compton scattering of high-power laser pulses on relativistic electron bunches represents an attractive method for high-brightness, quasi-monoenergetic {gamma}-ray production. The efficiency of {gamma}-ray generation via inverse Compton scattering is severely constrained by the small Thomson scattering cross section. Furthermore, repetition rates of high-energy short-pulse lasers are poorly matched with those available from electron accelerators, resulting in low repetition rates for generated {gamma}-rays. Laser recirculation has been proposed as a method to address those limitations, but has been limited to only small pulse energies and peak powers. Here we propose and experimentally demonstrate an alternative method for laser pulse recirculation that is uniquely capable of recirculating short pulses with energies exceeding 1 J. Inverse Compton scattering of recirculated Joule-level laser pulses has a potential to produce unprecedented peak and average {gamma}-ray brightness in the next generation of sources.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
940857
Report Number(s):
UCRL-JRNL-230147
TRN: US0807226
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nuclear Instruments and Methods in Physics Research A, vol. 578, N/A, May 8, 2008, pp. 160-171; Journal Volume: 578
Research Org:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; ACCELERATORS; BRIGHTNESS; COMPTON EFFECT; CROSS SECTIONS; EFFICIENCY; ELECTRONS; LASERS; PEAK LOAD; PRODUCTION; THOMSON SCATTERING