Abstract: (JACoW)
CERN Linac4 is made of a 3 MeV front end including a 45 keV source , a 3 MeV Radio Frequency Quadrupole (RFQ) and a fast chopper, followed by a 50 MeV Drift Tube Linac (DTL), a 100 MeV Cell-Coupled Drift Tube Linac (CCDTL) and a 160 MeV Pi-Mode Structure (PIMS). The Linac4 beam commissioning is performed in 6 stages of increasing energy. Movable beam diagnostics benches, with various instruments, are used at each step to allow the detailed characterisation of operational parameters that will play a key role in the overall future performance. The first three stages of the commissioning, up to 12 MeV beam energy, have been completed at the end of 2014. The RFQ and the chopper line at 3 MeV, as well as the first tank of the DTL at 12 MeV were fully characterised, using permanent diagnostic instruments and a movable diagnostic bench equipped with a spectrometer, a slit-grid emittance meter, a Bunch Shape Monitor, Beam Position Monitors and a laser-emittance device. This paper reports on the strategy and the results of the commissioning up to 12 MeV. It also presents the validation of the set-up strategy, which is essential for the next stages of commissioning.
  • linac
  • DTL
  • emittance
  • diagnostics
  • rfq
  • [1]

    Commissioning Of The LowEnergy Part Of Linac4

    • A.M. Lombardi
  • [2]

    Longitudinal Beam Profile Measurements In Linac4 Commissioning

    • G. Bellodi
  • [3]

    Emittance reconstruction technique for the Linac4 high energy commissioning

    • J.B. Lallement
  • [4]

    Linac4 Transverse And Longitudinal Emittance Reconstruction In The Presence Of Space Charge

    • J.B. Lallement
  • [5]

    Transverse Profile And Emittance Measurements With A Laser Stripping System During The Cern Linac4 Commissioning At 3 And 12 Mev

    • E. Bravin
  • [6]

    TRAVEL v4.07: User Manuel

    • A. Perrin
  • [7]

    Transverse Beam Profile Measurements In The Linac4 Medium Energy Beam Transport

    • M. Yarmohammadi Satri
  • [8]

    Linac4 Transverse and Longitudinal Acceptance Studies

    • V. Dimov
      ,
    • A. Lombardi