Author: Zeitler, B.
Paper Title Page
TUPME047 SINBAD - A Proposal for a Dedicated Accelerator Research Facility at DESY 1466
 
  • R.W. Aßmann, C. Behrens, R. Brinkmann, U. Dorda, K. Flöttmann, B. Foster, J. Grebenyuk, I. Hartl, M. Hüning, Y.C. Nie, J. Osterhoff, A. Rühl, H. Schlarb, B. Schmidt
    DESY, Hamburg, Germany
  • M. Groß, B. Marchetti, F. Stephan
    DESY Zeuthen, Zeuthen, Germany
  • F.J. Grüner, B. Hidding, A.R. Maier
    Uni HH, Hamburg, Germany
  • F.X. Kärtner, B. Zeitler
    CFEL, Hamburg, Germany
  • A.-S. Müller, M. Schuh
    KIT, Karlsruhe, Germany
  
  A new, dedicated accelerator research facility SINBAD (Short INnovative Bunches and Accelerators at DESY) is proposed. This facility is aimed at promoting two major goals: (1) Short electron bunches for ultra-fast science. (2) Construction of a plasma accelerator module with useable beam quality. Research and development on these topics is presently ongoing at various places at DESY, as add-on experiments at operational facilities. The two research goals are intimately connected: short bunches and precise femtosecond timing are requirements for developing a plasma accelerator module. The scientific case of a dedicated facility for accelerator research at DESY is discussed. Further options are mentioned, like the use of a 1 GeV beam from Linac2 for FEL studies and the setup of an attosecond radiation source with advanced technology. The presently planned conversion of the DORIS storage ring and its central halls into the SINBAD facility is described. The available space will allow setting up several independent experiments with a cost-effective use of the same infrastructure. National and international contributions and proposals can be envisaged.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPME047  
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TUPRI104 A Beam Arrival Time Cavity for REGAE at DESY 1820
 
  • M. Hansli, A. Angelovski, R. Jakoby, A. Penirschke
    TU Darmstadt, Darmstadt, Germany
  • K. Flöttmann, D. Lipka, H. Schlarb, S. Vilcins
    DESY, Hamburg, Germany
  • F.J. Grüner, B. Zeitler
    CFEL, Hamburg, Germany
  
  Funding: Kindly funded by BMBF within FSP302.
REGAE (Relativistic Electron Gun for Atomic Exploration) at DESY in Hamburg is a linear accelerator for electron diffraction experiments. It is upgraded to allow for laser driven wake field accelerator experiments. The bunch length is around 10 fs and the wakefield structure is about 100 fs and the synchronization of the laser and the electron bunch needs to be in order of the bunch length. To achieve this, a RFbased scheme will be used, comparing the phase of a beam induced signal with the reference clock. To improve the performance for the operation with charges well below 1 pC a beam arrival time cavity (BAC) at 3.025 GHz is foreseen as a highly sensitive pickup. To provide the maximum energy to the measurement electronics, the cavity needs a high R=Qvalue and an optimized coupling. An over-coupled setting might be beneficial as it provides a higher signal-to-noise ratio for the first samples. In this paper the concept of the beam arrival time cavity, the influence of the dark current on the measurement and parameter studies and optimization of the cavity itself are presented. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRI104  
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