Beam Preparation with Temporally Modulated Photocathode Laser Pulses for a Seeded THz FEL

Georgiev, Georgi; Aftab, Namra; Boonpornprasert, Prach; Chaisueb, Natthawut; Good, James; Groß, Matthias; Hillert, Wolfgang; Koschitzki, Christian; Krasilnikov, Mikhail; Li, Xiangkun; Lishilin, Osip; Lueangaramwong, Anusorn; Melkumyan, David; Mohanty, Sandeep; Niemczyk, Raffael; Oppelt, Anne; Qian, Houjun; Shaker, Seyd Hamed; Shu, Guan; Stephan, Frank; Vashchenko, Grygorii; Weilbach, Tobias

doi:10.18429/JACoW-IPAC2021-WEPAB115

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RIS citation export for WEPAB115: Beam Preparation with Temporally Modulated Photocathode Laser Pulses for a Seeded THz FEL

TY  - CONF
AU  - Georgiev, G.Z.
AU  - Aftab, N.
AU  - Boonpornprasert, P.
AU  - Chaisueb, N.
AU  - Good, J.
AU  - Groß, M.
AU  - Hillert, W.
AU  - Koschitzki, C.
AU  - Krasilnikov, M.
AU  - Li, X.
AU  - Lishilin, O.
AU  - Lueangaramwong, A.
AU  - Melkumyan, D.
AU  - Mohanty, S.K.
AU  - Niemczyk, R.
AU  - Oppelt, A.
AU  - Qian, H.J.
AU  - Shaker, H.
AU  - Shu, G.
AU  - Stephan, F.
AU  - Vashchenko, G.
AU  - Weilbach, T.
ED  - Liu, Lin
ED  - Byrd, John M.
ED  - Neuenschwander, Regis T.
ED  - Picoreti, Renan
ED  - Schaa, Volker R. W.
TI  - Beam Preparation with Temporally Modulated Photocathode Laser Pulses for a Seeded THz FEL
J2  - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021
CY  - Campinas, SP, Brazil
T2  - International Particle Accelerator Conference
T3  - 12
LA  - english
AB  - The need for carrier-envelope-phase (CEP) stable THz pump pulses is recognized at many pump-probe experiments at the European XFEL. At the Photo Injector Test Facility at DESY in Zeuthen (PITZ), a proof-of-principle experiment of an accelerator-based THz FEL source is in preparation. Since the CEP stability of FEL pulses is not guaranteed in the SASE regime, a seeding scheme is needed. A common scheme for seeding is to drive the microbunching process with external laser pulses, which are power-limited in the THz range. Alternatively, a pre-bunched beam, generated for example by applying a temporally modulated photocathode laser pulse, can be used to drive the FEL. The beam dynamics with such a seeding method are studied with ASTRA tracking code simulations with space-charge forces as well as experimentally. The results of these studies are shown and discussed.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 2866
EP  - 2869
KW  - FEL
KW  - laser
KW  - cathode
KW  - electron
KW  - simulation
DA  - 2021/08
PY  - 2021
SN  - 2673-5490
SN  - 978-3-95450-214-1
DO  - doi:10.18429/JACoW-IPAC2021-WEPAB115
UR  - https://jacow.org/ipac2021/papers/wepab115.pdf
ER  -