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Large Research Facilities

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Division Large Research FacilitiesGFA

The Division of Large Research Facilities (GFA) is responsible for the construction, operation and development of the particle accelerators at PSI. Accelerator facilities form the backbone of the main research activities at PSI. The high intensity proton accelerator (HIPA) is used to generate muons for muon spin spectroscopy (LMU ), and neutrons by spallation from a target (SINQ ). The Swiss Light Source (SLS) is a state-of-the-art electron storage ring which generates high brightness photon beams for users of synchrotron radiation (PSD ).

A hard X-Ray Free Electron Laser, SwissFEL, was inaugurated at the end of 2016. It is based on a low emittance 5.8 GeV linear electron accelerator. The facility provides extremely short, very bright pulses of X-rays for time resolved experiments. Construction of a soft X-ray free electron laser (ATHOS), driven by the same electron linac, has also begun. These instruments are used by a large national and international multi-disciplinary research community.

GFA is also responsible for the operation of a compact proton cyclotron and attached beamlines (PROSCAN), dedicated to the treatment of cancer patients within the Centre for Proton Therapy (ZPT). A third rotating gantry, GANTRY 3, was recently added to this treatment facility. A major upgrade of the SLS is currently under design. This upgrade will result in an increase of the brightness of the source by two orders of magnitude.

Current Highlight

6 March 2020
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Demonstration of Large Bandwidth Hard X-Ray Free-Electron Laser Pulses at SwissFEL

We have produced hard x-ray free-electron laser (FEL) radiation with unprecedented large bandwidth tunable up to 2%. The experiments have been carried out at SwissFEL, the x-ray FEL facility at the Paul Scherrer Institute in Switzerland. The bandwidth is enhanced by maximizing the energy chirp of the electron beam, which is accomplished by optimizing the compression setup. We demonstrate continuous tunability of the bandwidth with a simple method only requiring a quadrupole magnet. The generation of such broadband FEL pulses will improve the efficiency of many techniques such as x-ray crystallography and spectroscopy, opening the door to significant progress in photon science. It has already been demonstrated that the broadband pulses of SwissFEL are beneficial to enhance the performance of crystallography, and further SwissFEL users plan to exploit this large bandwidth radiation to improve the efficiency of their measurement techniques.

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Contact

Large Research Facility Division
WBGB/127
5232 Villigen PSI
Switzerland

Mike Seidel
Head of Division
+41 56 310 33 78
mike.seidel@psi.ch

Assistant:
Marlen Bugmann
+41 56 310 31 28
marlen.bugmann@psi.ch

GFA Open positions

Current opening at Large Research Facilities Dept.

Large Research Facilities

  • Swiss Light Source
    Homepage SLS
  • Spallation Neutron Source
    Homepage SINQ
  • Swiss Muon Source
    Homepage SμS
  • SwissFEL
    Homepage SwissFEL

Accelerator Status

  • HIPA-Status
  • Proscan-Status
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