Journal Article

PUBDB-2018-05489

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Shaping Triangular Picosecond Laser Pulses for Electron Photoinjectors

Kuzmin, I. (Corresponding author)Extern* ; Mironov, S.Extern* ; Gacheva, E.Extern* ; Zelenogorsky, V. ; Potemkin, A. ; Khazanov, E. ; Kanareykin, A. ; Antipov, S.Extern* ; Krasilnikov, M.DESY* ; Loisch, G.DESY* ; Stephan, F.DESY*

2019
IOP Publ. Philadelphia, Pa.

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Please use a persistent id in citations: doi:10.1088/1612-202X/aaef95

Abstract: Beam driven wakefield acceleration is one of the most advanced novel accelerator concepts.This process occurs in a plasma or a slow-wave structure in which the drive beam depositsenergy in the form of a wake and the main beam is accelerated by this wake. For efficientacceleration, it is important to shape the drive beam current and to increase the so-calledtransformer ratio: the energy gain by the main beam to the energy loss of the drive beam.Triangular bunch shapes are among the most promising distributions considered for increasingthe transformer ratio. In most cases, the drive beam is shaped with the help of electron beamphase space manipulation along with removal of portions of the beam with a scraper. This typeof shaping is complicated by itself, causing charge loss and thermal heating, but also leads tobeam instabilities due to the altered phase space of the beam. In this paper, we demonstrateexperimentally the shaping of picosecond laser pulses in the form of a triangle with the helpof a spatial light modulator. Such laser pulses can be used to generate a triangular electronbunch from a photoinjector. Considerations on the required pulse profile, comparison to othershaping methods, experimental results, and numerical analysis of the impact of pulse shaperparameters on the reproducibility of the triangular laser pulse shape are presented.

Note: © Astro Ltd; Post referee fulltext in progress; Embargo 12 months from publication

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Contributing Institute(s):

1. Photoinjektor (ZEU-PITZ)

Research Program(s):

1. 631 - Accelerator R & D (POF3-631) (POF3-631)
2. HRJRG-400 - Cathode laser pulses for high brightness photo injector optimization (2015_IVF-HRJRG-400) (2015_IVF-HRJRG-400)

Experiment(s):

1. Photo Injector Test Facility

Appears in the scientific report 2019

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; No Authors Fulltext ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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