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Development of pulsed laser systems and cathode-performance studies for the S-DALINAC polarized injector

Espig, M. and Eckardt, C. and Enders, J. and Fritzsche, Y. and Kurichiyanil, N. and Lindemann, J. and Wagner, M. (2012):
Development of pulsed laser systems and cathode-performance studies for the S-DALINAC polarized injector.
In: Proceedings of the International Particle Accelerator Conference, New Orleans, LA/USA (2012), [Online-Edition: http://accelconf.web.cern.ch/AccelConf/IPAC2012/papers/weppd...],
[Conference or Workshop Item]

Abstract

A source of polarized electrons has recently been implemented at the superconducting Darmstadt electron linear accelerator S-DALINAC. We give an overview of the recent performance of the system. Photo-emission from a superlattice-GaAs photo-cathode is obtained from using either a DC diode laser or a short-pulse Ti:Sapphire laser system. For a robust pulsed quasi-cw operation, it is investigated whether a VECSEL system (Vertical-Cavity Surface-Emitting Laser) can be realized with a wavelength of 780 nm and a repetition rate of 3 GHz with pulse widths of a few picoseconds only. To enhance the availability and performance of the polarized source with respect to quantum efficiency, a separate atomic-hydrogen cleaning system for the cathodes is planned which will allow cathode treatment to be tested and optimized.

Item Type: Conference or Workshop Item
Erschienen: 2012
Creators: Espig, M. and Eckardt, C. and Enders, J. and Fritzsche, Y. and Kurichiyanil, N. and Lindemann, J. and Wagner, M.
Title: Development of pulsed laser systems and cathode-performance studies for the S-DALINAC polarized injector
Language: English
Abstract:

A source of polarized electrons has recently been implemented at the superconducting Darmstadt electron linear accelerator S-DALINAC. We give an overview of the recent performance of the system. Photo-emission from a superlattice-GaAs photo-cathode is obtained from using either a DC diode laser or a short-pulse Ti:Sapphire laser system. For a robust pulsed quasi-cw operation, it is investigated whether a VECSEL system (Vertical-Cavity Surface-Emitting Laser) can be realized with a wavelength of 780 nm and a repetition rate of 3 GHz with pulse widths of a few picoseconds only. To enhance the availability and performance of the polarized source with respect to quantum efficiency, a separate atomic-hydrogen cleaning system for the cathodes is planned which will allow cathode treatment to be tested and optimized.

Uncontrolled Keywords: S-DALINAC, Accelerator Physics, Polarized Electron Source, Polarimetry, Instrumentation, SFB634, E4
Divisions: 05 Department of Physics > Institute of Nuclear Physics
05 Department of Physics
Event Title: Proceedings of the International Particle Accelerator Conference, New Orleans, LA/USA (2012)
Date Deposited: 12 Feb 2014 09:19
Official URL: http://accelconf.web.cern.ch/AccelConf/IPAC2012/papers/weppd...
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