Author: Aballea, D.
Paper Title Page
TUODB03 Innovative Design of the Fast Switching Power Supplies for the SOLEIL EMPHU Insertion and its Fast Correctors 982
 
  • F. Bouvet, D. Aballea, R. Ben El Fekih, S. Bobault, M. Bol, Y. Bouanani, Y. Dietrich, A. Hardy, F. Marteau
    SOLEIL, Gif-sur-Yvette, France
 
  A new electromagnetic/permanent magnets helical undulator has been designed and is under commissioning at SOLEIL. For a fast switching of the photon polarization, it requires a power supply able to switch between +/–350 A within 50 ms, without any current overshoot and with a very good current resolution over the full scale (50 ppm). The in-house design is based on two full switching bridges with interleaved commands. Combined with a regulation scheme using sophisticated algorithms, such a design enables to reach a high control bandwidth, permitting fast transitions. Such a fast and accurate system needs well performing digital control electronics. We chose the digital control cards developed at Paul Scherrer Institute (Villigen CH) for the SLS (Swiss Light Source). The components, measurements, interlocks, control interfaces, and electronic cards were developed and assembled together at SOLEIL. This paper will present the main lines of this development and the performances achieved during the EMPHU insertion commissioning. The design of the fast power supplies (±20 A) needed for corrector magnets of this insertion will also be presented.  
slides icon Slides TUODB03 [3.017 MB]