Laser Systems Generating Short Polarized Electron Bunches at the S-DALINAC

Autor:	Espig, Martin, Enders, Joachim, Fritzsche, Yuliya, Kaiser, Andreas, Wagner, Markus
Jazyk:	angličtina
Rok vydání:	2014
Předmět:	Physics::Instrumentation and Detectors Physics::Optics Physics::Atomic Physics 03 Particle Sources and Alternative Acceleration Techniques T02 Electron Sources Accelerator Physics
DOI:	10.18429/jacow-ipac2014-mopri021
Popis:	The source of polarized electrons at the superconducting Darmstadt electron linear accelerator S-DALINAC uses photo-emission from strained-layer superlattice-GaAs and bulk-GaAs photocathodes. This system is driven by either 3 GHz gain-switched diode lasers or a short-pulse Ti:Sapphire laser system. Highly polarized electrons are generated with laser light at 780 nm, while blue laser light is used for unpolarized high-current experiments. We present the existing pulsed laser systems and the planned developments for the diode laser system, including, e.g., impedance matching of the diode lasers, gain switching with short electrical pulses and pulsing with a Mach-Zehnder modulator. The pulsed operation is aimed at generating short electron bunches (< 50 ps) at the S-DALINAC with variable repetition rates from some MHz to 3 GHz. Proceedings of the 5th Int. Particle Accelerator Conf., IPAC2014, Dresden, Germany
Databáze:	OpenAIRE
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