Keyword: cryomodule
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MOPG27 The Design, Construction and Operation of the Beam Instrumentation for the High Intensity and Energy Upgrade of ISOLDE at CERN diagnostics, detector, target, operation 101
  • W. Andreazza, E. Bravin, E.D. Cantero, S. Sadovich, A.G. Sosa, R. Veness
    CERN, Geneva, Switzerland
  • J.M. Carmona, J.H. Galipienzo, P.N.G. Noguera Crespo
    AVS, Elgoibar, Spain
  The High Intensity and Energy (HIE) upgrade to the on-line isotope separation facility (ISOLDE) facility at CERN is currently in the process of being commissioned. The very tight space available between the superconducting acceleration cavities and a challenging specification led to the design of a compact 'diagnostic box' with a number of insertable instruments on a common vacuum chamber. The box was conceived in partnership with the engineering firm AVS and produced as a completed assembly in industry. 14 diagnostic boxes have been installed and are now operational. This paper will describe the design, the construction and first results from operation of these HIE ISOLDE diagnostic boxes.  
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DOI • reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG27  
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TUPG17 Design and Beam Test Results of the Reentrant Cavity BPM for the European XFEL electronics, cavity, linac, controls 356
  • C. Simon, M. Luong, O. Napoly
    CEA/DSM/IRFU, France
  • N. Baboi, D. Lipka, D. Nölle, G. Petrosyan
    DESY, Hamburg, Germany
  • R. Baldinger, B. Keil, G. Marinkovic, M. Roggli
    PSI, Villigen PSI, Switzerland
  • M. Baudrier
    CEA/DRF/IRFU, Gif-sur-Yvette, France
  • L. Maurice
    CEA/IRFU, Gif-sur-Yvette, France
  The European X-ray Free Electron Laser (E-XFEL) will use reentrant beam position monitors (BPMs) in about one quarter of the superconducting cryomodules. This BPM is composed of a radiofrequency (RF) reentrant cavity with 4 antennas and an RF signal processing electronics. Hybrid couplers, near the cryomodules, generate the analog sum and difference of the raw pickup signals coming from two pairs of opposite RF feedthroughs. The resulting sum (proportional to bunch charge) and difference signals (proportional to the product of position and charge) are then filtered, down-converted by an RF front-end (RFFE), digitized, and digitally processed on an FPGA board. The task of CEA/Saclay was to cover the design, fabrication and beam tests and deliver these reentrant cavity BPMs for the E-XFEL linac in collaboration with DESY and PSI. This paper gives an overview of the reentrant BPM sys-tem with focus on the last version of the RF front end electronics, signal processing, and overall system performance. Measurement results achieved with prototypes installed at the DESY FLASH2 linac and in the E-XFEL injector are presented.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG17  
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