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

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).

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-0005-D7D1-C Versions-Permalink: https://hdl.handle.net/21.11116/0000-0005-D7D2-B

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Urheber:
Fedosseev, Valentin¹, Autor
Batsch, Fabian¹, Autor
Capelli, Candy¹, Autor
Chevallay, Eric¹, Autor
Chritin, Nicolas¹, Autor
Döbert, Steffen¹, Autor
Feniet, Thierry¹, Autor
Friebel, Florence¹, Autor
Gander, Pierre¹, Autor
Granados, Eduardo¹, Autor
Gschwendtner, Edda¹, Autor
Hansen, Jan¹, Autor
Heßler, Christoph¹, Autor
Hüther, Mathias¹, Autor
Martyanov, Mikhail¹, Autor
Moody, Joshua¹, Autor
Muggli, Patric¹, Autor
Panuganti, Harsha¹, Autor
Szczurek, Krzysztof¹, Autor

Affiliations:
1Max Planck Institute for Physics, Max Planck Society and Cooperation Partners, ou_2253650

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Schlagwörter: AWAKE

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.