Laserwire at the Accelerator Test Facility 2 with submicrometer resolution



Nevay, LJ, Boogert, ST, Karataev, P, Kruchinin, K, Corner, L ORCID: 0000-0002-3882-1272, Howell, DF, Walczak, R, Aryshev, A, Urakawa, J and Terunuma, N
(2014) Laserwire at the Accelerator Test Facility 2 with submicrometer resolution. Physical Review Special Topics: Accelerators and Beams, 17 (7). 072802-.

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Abstract

A laserwire transverse electron beam size measurement system has been developed and operated at the Accelerator Test Facility 2 (ATF2) at KEK. Special electron beam optics were developed to create an approximately 1 x 100 {\mu}m (vertical x horizontal) electron beam at the laserwire location, which was profiled using a 150 mJ, 71 ps laser pulse with a wavelength of 532 nm. The precise characterisation of the laser propagation allows the non-Gaussian transverse profiles of the electron beam caused by the laser divergence to be deconvolved. A minimum vertical electron beam size of 1.07 ${\pm}$ 0.06 (stat.) ${\pm}$ 0.05 (sys.) {\mu}m was measured. A vertically focussing quadrupole just before the laserwire was varied whilst making laserwire measurements and the projected vertical emittance was measured to be 82.56 ${\pm}$ 3.04 pm rad.

Item Type: Article
Additional Information: 17 pages, 26 figures, submitted to Phys. Rev. ST Accel. Beams
Uncontrolled Keywords: physics.acc-ph, physics.acc-ph, physics.ins-det
Depositing User: Symplectic Admin
Date Deposited: 17 Aug 2020 07:45
Last Modified: 18 Jan 2023 23:37
DOI: 10.1103/PhysRevSTAB.17.072802
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3097783