Author: Lorbeer, B.
Paper Title Page
WEPP11
Analysis of the Bunch Position Monitoring in Long Bunch Trains at FLASH  
 
  • N. Baboi, B. Lorbeer
    DESY, Hamburg, Germany
 
  Multi-bunch beams are routinely being accelerated at the FLASH Free Electron Laser at DESY, Hamburg. More than hundred Beam Position Monitors (BPMs) measure the transverse offset of every single bunch in each train with a bunch repetition frequency of up to 1 MHz and a length of several hundreds of microseconds. Various types of monitors are being used: button, stripline and cavity BPMs, each type with several designs. The performance differs from type to type, with resolutions from one to tens of micrometers. However so far only the first bunch in the train was investigated in detail. In this paper we study every bunch along long bunch train for several BPM designs and locations.  
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