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Title Performance of the AWAKE Proton Beam Line Beam Position Measurement System at CERN
  • M. Barros Marin, A. Boccardi, T.B. Bogey, J.L. Gonzalez, L.K. Jensen, T. Lefèvre, D. Medina, M. Wendt
    CERN, Geneva, Switzerland
  • J. Boix Gargallo
    UAB-IFAE, Barcelona, Spain
Abstract The Advanced Proton Driven Plasma Wakefield Acceleration Experiment (AWAKE), based at CERN, explores the use of a proton driven plasma wake-field to accelerate electrons at high energies over short distances. This paper introduces the Beam Position Measurement (BPM) system of the proton beamline and its performance. This BPM system is composed of 21 dual plane button pickups distributed along the 700m long transfer line from the CERN Super Proton Synchrotron (SPS) extraction point to beyond the plasma cell. The electrical pulses from the pickups are converted into analogue signals proportional to the intensity and displacement of the beam using logarithmic amplifiers, giving the system a high dynamic range (>50dB). These signals are digitized and processed by an FPGA-based front-end card featuring an ADC sampling at 40Msps. Each time a bunch is detected, the intensity and position data is sent over 1km of copper cable to surface electronics through a serial link at 10 Mbps. There, the data is further processed and stored. The dynamic range, resolution, noise and linearity of the system as evaluated from the laboratory and 2016 beam commissioning data will be discussed in detail.
Paper download TUPCF06.PDF [4.294 MB / 4 pages]
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Conference IBIC2017, Grand Rapids, MI, USA
Series International Beam Instrumentation Conference (6th)
Proceedings Link to full IBIC2017 Proccedings
Session Tuesday Poster
Date 22-Aug-17   16:00–18:00
Main Classification 3 BPMs and Beam Stability
Keywords ion, electron, proton, electronics, pick-up
Publisher JACoW, Geneva, Switzerland
Editors Zhengzheng Liu (FRIB, East Lansing, MI, USA); Steven Lidia (FRIB, East Lansing, MI, USA); Amy McCausey (FRIB, East Lansing, MI, USA); Volker RW Schaa (GSI, Darmstadt, Germany)
ISBN 978-3-95450-192-2
Published March 2018
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