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Bonnes, U.

Paper Title Page
TUP007 The Power and Polarisation Upgrade Project at the S-DALINAC Injector 398
  • R. Eichhorn, R. Barday, U. Bonnes, M. Brunken, J. Conrad, C. Eckardt, J. Enders, H.-D. Gräf, C. Heßler, T. Kuerzeder, C. Liebig, M. Platz, Y. Poltoratska, M. Roth, S.T. Sievers, T. Weilbach
    TU Darmstadt, Darmstadt
  • W. Ackermann, W.F.O. Müller, B. Steiner, T. Weiland
    TEMF, TU Darmstadt, Darmstadt
  • K. Aulenbacher
    IKP, Mainz
  • J.D. Fuerst
    ANL, Argonne

Funding: Work supported by the DFG through SFB 634
At the superconducting Darmstadt linear accelerator S-DALINAC currently two upgrades of the injector are underway: The current upgrade for the injector mainly involves the superconducting rf part. In order to increase the maximum current from 60 uA to 150 or 250 uA the power coupler design had to be modified, resulting in major changes in the whole cryo-module. Second, an additional polarized electron source (SPIN) has been set-up at an offline test area. There, the polarized electrons are produced by photoemission at a strained GaAs cathode on a 100 kV platform. The test beam line includes a Wien filter for spin manipulation, a Mott polarimeter for polarization measurement and additional diagnostic elements. We will give an overview over the project, report on the status and present first measurement results including the proof of polarisation.