Laserwire at the Accelerator Test Facility 2 with submicrometer resolution

Journal article

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. © 2014 Published by the American Physical Society.

Authors: Nevay, L; Boogert, S; Karataev, P; Kruchinin, K; Corner, L

• Publication status: Published
• Publisher: American Physical Society
• Journal: PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
• Volume: 17
• Issue: 7
• Publication date: 2014-07-09
• DOI: 10.1103/PhysRevSTAB.17.072802
• EISSN: 1098-4402
• ISSN: 1098-4402
• Language: English