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Machine Learning Based Spatial Light Modulator Control for the Photoinjector Laser at FLUTE

Xu, Chenran ORCID iD icon; Bründermann, Erik ORCID iD icon; Müller, Anke-Susanne ORCID iD icon; Nasse, Michael Johannes; Santamaria Garcia, Andrea ORCID iD icon; Sax, Carl; Widmann, Christina; Eichler, Annika


FLUTE (Ferninfrarot Linac- und Test-Experiment) at KIT is a compact linac-based test facility for novel accelerator technology and a source of intense THz radiation. FLUTE is designed to provide a wide range of electron bunch charges from the pC- to nC-range, high electric fields up to 1.2 GV/m, and ultra-short THz pulses down to the fs-timescale. The electrons are generated at the RF photoinjector, where the electron gun is driven by a commercial titanium sapphire laser. In this kind of setup the electron beam properties are determined by the photoinjector, but more importantly by the characteristics of the laser pulses. Spatial light modulators can be used to transversely and longitudinally shape the laser pulse, offering a flexible way to shape the laser beam and subsequently the electron beam, influencing the produced THz pulses. However, nonlinear effects inherent to the laser manipulation (transportation, compression, third harmonic generation) can distort the original pulse. In this paper we propose to use machine learning methods to manipulate the laser and electron bunch, aiming to generate tailor-made THz pulses. The method is demonstrated experimentally in a test setup.

Verlagsausgabe §
DOI: 10.5445/IR/1000138641
Veröffentlicht am 05.10.2021
DOI: 10.18429/JACoW-IPAC2021-WEPAB289
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Beschleunigerphysik und Technologie (IBPT)
Laboratorium für Applikationen der Synchrotronstrahlung (LAS)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2021
Sprache Englisch
Identifikator ISBN: 978-3-95450-214-1
KITopen-ID: 1000138641
HGF-Programm 54.11.11 (POF IV, LK 01) Accelerator Operation, Research and Development
Erschienen in 12th International Particle Accelerator Conference : virtual edition, May 24th-28th, 2021, Brazil : proceedings volume / IPAC2021. Ed.: R. Picoreti
Veranstaltung 12th International Particle Accelerator Conference (IPAC 2021), Online, 24.05.2021 – 28.05.2021
Verlag JACoW Publishing
Seiten 3332-3335
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