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HK: Fachverband Hadronen und Kerne

HK 67: Poster Session

HK 67.91: Poster

Donnerstag, 19. März 2009, 14:00–16:00, Audi-Max

Emittance Measurements at the Darmstadt Source of Polarized Electrons — •Christoph Ingenhaag, Roman Barday, Christian Eckardt, Joachim Enders, Alf Göök, Yuliya Poltoratska, and Markus Wagner — Institut für Kernphysik, Technische Universität Darmstadt, Germany

Emittance measurements for low-energy (100 keV) electron beams are presented. Data was acquired at the teststand of the source of polarized electrons which is being developed for future implementation at the superconducting Darmstadt electron linear accelerator S-DALINAC. Polarized electrons are produced by laser irradiation of a strained-superlattice GaAs cathode. The emittance was determined by measuring the beam profile as a function of the focusing strength of a solenoid for various operation modes (intensity, laser spot size, laser wavelength, pulsed vs. DC laser operation) of the electron source.

Supported by Deutsche Forschungsgemeinschaft through SFB 634.