Laserwire at the Accelerator Test Facility 2 with submicrometer resolution

L. J. Nevay, S. T. Boogert, P. Karataev, K. Kruchinin, L. Corner, D. F. Howell, R. Walczak, A. Aryshev, J. Urakawa, N. Terunuma

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


A laserwire transverse electron beam size measurement system has been developed and operated at the Accelerator Test Facility 2 at the High Energy Accelerator Research Organization, Japan (KEK). Special electron beam optics were developed to create an approximately 1×100 μm (vertical× horizontal) electron beam at the laserwire location, which was profiled using 150 mJ, 71 ps laser pulses with a wavelength of 532 nm. The precise characterization of the laser propagation allows the non-Gaussian laserwire scan profiles caused by the laser divergence to be deconvolved. A minimum vertical electron beam size of 1.07±0.06(stat)±0.05(sys) μm was measured. A vertically focusing quadrupole just before the laserwire was varied while making laserwire measurements and the projected vertical emittance was measured to be 82.56±3.04 pm rad.

Original languageEnglish
Article number072802
JournalPhysical Review Special Topics - Accelerators and Beams
Issue number7
Publication statusPublished - 9 Jul 2014
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)
  • Surfaces and Interfaces

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