Updated: 20.03.2013
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Swiss/PSI In-Kind Contribution to the European XFEL
PSI is developing systems to measure and stabilize the transverse position of the electron beam in the European X-ray Free Electron Laser (E-XFEL) facility, in collaboration with Germany (DESY) and France (CEA/Saclay). The E-XFEL accelerates electrons up to 17.5GeV in a superconducting linear accelerator, followed by so-called undulator magnets where the electrons generate ultra-short and -intensive X-ray pulses with laser properties, to be used for a large variety of novel experiments.
Intra Bunch Train Feedback System
The so-called transverse intra-bunch train feedback (IBFB) measures and corrects the transverse positions of the electrons in the E-XFEL to micrometer level on a microsecond time scale, which is necessary to generate an X-ray beam with a sufficiently stable intensity and pointing stability.
Beam Position Monitor Systems
The ~460 electron beam position monitors (BPMs) of different types in the E-XFEL are needed to steer the beam through its ~3km long beam pipe, where beam positions need to be measured with resolutions down to sub-micrometer level in the area of the undulator magnets. The E-XFEL BPM know-how obtained by PSI and related synergies also allow the development of a BPM system for SwissFEL, a complementary FEL facility being planned at PSI where the different properties of electron and photon beams impose additional, challenging performance requirements on the BPM system.
Updated: 20.03.2013
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