Generation and delivery of an ultraviolet laser beam for the RF-photoinjector 
of the AWAKE electron beam

Fedosseev, Valentin; Batsch, Fabian; Capelli, Candy; Chevallay, Eric; Chritin, Nicolas; Döbert, Steffen; Feniet, Thierry; Friebel, Florence; Gander, Pierre; Granados, Eduardo; Gschwendtner, Edda; Hansen, Jan; Heßler, Christoph; Hüther, Mathias; Martyanov, Mikhail; Moody, Joshua; Muggli, Patric; Panuganti, Harsha; Szczurek, Krzysztof

doi:10.18429/JACoW-IPAC2019-THPGW054

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Generation and delivery of an ultraviolet laser beam for the RF-photoinjector of the AWAKE electron beam

MPG-Autoren

Fedosseev, Valentin
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Batsch, Fabian
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Capelli, Candy
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Chevallay, Eric
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Chritin, Nicolas
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Döbert, Steffen
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Feniet, Thierry
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Friebel, Florence
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Gander, Pierre
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Granados, Eduardo
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Gschwendtner, Edda
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Hansen, Jan
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Heßler, Christoph
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Hüther, Mathias
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Martyanov, Mikhail
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Moody, Joshua
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Muggli, Patric
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Panuganti, Harsha
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Szczurek, Krzysztof
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

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Zitation

Fedosseev, V., Batsch, F., Capelli, C., Chevallay, E., Chritin, N., Döbert, S., et al. (2019). Generation and delivery of an ultraviolet laser beam for the RF-photoinjector of the AWAKE electron beam. In IPAC2019 (pp. 3709-3712).

Zitierlink: https://hdl.handle.net/21.11116/0000-0005-D7D1-C

Zusammenfassung

In the AWAKE experiment, the electron beam is used to probe the proton-driven wakefield acceleration in plasma. Electron bunches are produced using an rf-gun equipped with a Cs2 2 Te photocathode illuminated by an ultraviolet (UV) laser pulse. To generate the UV laser beam a fraction of the infrared (IR) laser beam used for production of rubidium plasma is extracted from the laser system, time-compressed to a picosecond scale and frequency tripled using nonlinear crystals. The optical line for transporting the laser beam over the 24 m distance was built using rigid supports for mirrors and air-evacuated tube to minimize beam-pointing instabilities. 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 seeding the plasma wakefield.