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Elsen, Eckhard.

Paper Title Page
THPMN016 Study of Fill Patterns for the ILC Electron Damping Ring 2739
 
  • G. X. Xia, Eckhard. Elsen, D. Kruecker
    DESY, Hamburg
  
  Funding: This work is supported by the Commission of the European Communities under the 6th Framework Programme "Structuring the European Research Area", contract number RIDS-011899

Ion effects are detrimental to the performance of the electron damping ring for the International Linear Collider (ILC). Irregular bunch patterns, e.g. short bunch trains with interleaved gaps, are an effective way to alleviate ion effects. In this paper, we discuss the fill patterns and their impact on the ion effects for the ILC electron damping ring.

 
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.