Generation of multi-bunch beam with beam loading compensation by using RF amplitude modulation in Laser Undulator Compact X-ray (LUCX)

M. Fukuda, S. Araki, Y. Honda, N. Terunuma, J. Urakawa, Kazuyuki Sakaue, Masakazu Washio

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have been developing a compact X-ray source based on inverse Compton scattering (ICS) between an electron beam and a laser pulse stacked in an optical cavity at Laser Undulator Compact X-ray (LUCX) accelerator in KEK. The accelerator consists of a 3.6-cell photo-cathode rf-gun, a 12-cell standing wave accelerating structure and a 4-mirror planar optical cavity. Our aim is to obtain a clear X-ray image in a shorter period of times and the target flux of X-ray is 1.7×107 photons/pulse with 10% bandwidth at present. To achieve this target, it is necessary to increase the intensity of an electron beam to 500 nC/pulse with 1000 bunches at 30 MeV. Presently, we have achieved the generation of 24 MeV beam with total charge of 600 nC in 1000 bunches with the bunch-by-bunch energy difference is within 1.3% peak to peak. The beam-loading has been compensated by injecting the beam before rf power has been filled (ΔT method) and by modulating the amplitude of the rf pulse. We report the results of the multi-bunch beam generation and acceleration in the LUCX accelerator.

Original languageEnglish
Title of host publication6th International Particle Accelerator Conference, IPAC 2015
PublisherJoint Accelerator Conferences Website (JACoW)
Pages1576-1578
Number of pages3
ISBN (Electronic)9783954501687
Publication statusPublished - 2015
Event6th International Particle Accelerator Conference, IPAC 2015 - Richmond, United States
Duration: 2015 May 32015 May 8

Other

Other6th International Particle Accelerator Conference, IPAC 2015
CountryUnited States
CityRichmond
Period15/5/315/5/8

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Atomic and Molecular Physics, and Optics

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    Fukuda, M., Araki, S., Honda, Y., Terunuma, N., Urakawa, J., Sakaue, K., & Washio, M. (2015). Generation of multi-bunch beam with beam loading compensation by using RF amplitude modulation in Laser Undulator Compact X-ray (LUCX). In 6th International Particle Accelerator Conference, IPAC 2015 (pp. 1576-1578). Joint Accelerator Conferences Website (JACoW).