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RIS citation export for THPGW054: Generation and Delivery of an Ultraviolet Laser Beam for the RF-Photoinjector of the Awake Electron Beam

AU  - Fedosseev, V.
AU  - Batsch, F.
AU  - Capelli, C.
AU  - Chevallay, E.
AU  - Chritin, N.
AU  - Döbert, S.
AU  - Feniet, T.
AU  - Friebel, F.
AU  - Gander, P.
AU  - Granados, E.
AU  - Gschwendtner, E.
AU  - Hansen, J.
AU  - Heßler, C.
AU  - Hüther, M.
AU  - Martyanov, M.
AU  - Moody, J.T.
AU  - Muggli, P.
AU  - Panuganti, H.
AU  - Szczurek, K.A.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Generation and Delivery of an Ultraviolet Laser Beam for the RF-Photoinjector of the Awake Electron Beam
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - In the AWAKE experiment, the electron beam is used to probe the proton-driven wakefield acceleration in a 10 m long rubidium vapor source. Electron bunches are produced using an RF-gun equipped with a Cs2Te photocathode illuminated by an ultraviolet (UV) laser pulse. To generate the UV laser beam a fraction of the infrared (IR) laser beam used for ionization of rubidium is extracted from the laser system, time-compressed to a picosecond scale and frequency tripled using nonlinear crystals. The transport line of the laser beam over the 20 m distance was built using rigid supports for mirrors and air-evacuated tube to prevent any possible beam pointing instabilities due to vibrations and air convection. Construction of the UV beam optical system enables appropriate beam shaping and control of its size and position on the cathode, as well as time delay with respect to the IR pulse, i.e. with respect to the plasma wakefield seeder. In this paper, we present the design of the UV beam line and results of its commissioning regarding IR/UV conversion, beam pointing stability, and means of beam control and monitoring.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 3709
EP  - 3712
KW  - laser
KW  - electron
KW  - cathode
KW  - plasma
KW  - proton
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-THPGW054
UR  - http://jacow.org/ipac2019/papers/thpgw054.pdf
ER  -