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Schreiber, S.

Paper Title Page
THPMN025 High QE Photocathodes Performance during Operation at FLASH/PITZ Photoinjectors 2763
  • L. Monaco, P. Michelato, C. Pagani, D. Sertore
    INFN/LASA, Segrate (MI)
  • J. W. Baehr, M. Krasilnikov, S. Lederer, F. Stephan
    DESY Zeuthen, Zeuthen
  • J. H. Han, S. Schreiber
    DESY, Hamburg
  Funding: Work supported by the European Community, contract number RII3-CT-2004-506008

The FLASH (DESY-Hamburg) and PITZ (DESY-Zeuthen) photoinjectors routinely use high quantum efficiency (QE) photocathodes produced at LASA (INFN-Milano), since 1998. To further understand the photocathode behavior during beam operation, photocathode QE measurements have been performed at different operating conditions in both RF photoinjectors. The analysis of these measurements will be used to improve the photocathode preparation procedures and to deeper understand the photocathode properties, whose final goal would be the further increase of their lifetime and beam quality preservation during the RF gun operations.

FRPMN094 Beam Profile Measurements with the 2-D Laser-Wire at PETRA 4303
  • M. T. Price, G. A. Blair, S. T. Boogert, G. E. Boorman, A. Bosco, S. Malton
    Royal Holloway, University of London, Surrey
  • K. Balewski, Eckhard. Elsen, V. Gharibyan, H.-C. Lewin, F. Poirier, S. Schreiber, N. J. Walker, K. Wittenburg
    DESY, Hamburg
  • T. Kamps
    BESSY GmbH, Berlin
  Funding: Work supported by the PPARC LC-ABD collaboration and the Commission of the European Communities under the 6th Framework Programme Structuring the European Research Area, contract number RIDS-011899.

The current PETRA II Laser-Wire system, being developed for the ILC and PETRA III, uses a piezo-driven mirror to scan laser light across an electron bunch. This paper reports on the recently installed electron-beam finding system, presenting recent horizontal and vertical profile scans with corresponding studies.