Author: Patel, S.
Paper Title Page
TUPOJO21 The Pre-Injector Upgrade for the ISIS H Linac 398
TUOPA03   use link to see paper's listing under its alternate paper code  
 
  • S.R. Lawrie, R.E. Abel, C. Cahill, D.C. Faircloth, A.P. Letchford, J.H. Macgregor, S. Patel, T.M. Sarmento, J.D. Speed, O.A. Tarvainen, M. Whitehead, T. Wood
    STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
 
  A new maintenance-free, high current, high duty-factor H linac pre-injector is being commissioned for the ISIS pulsed spallation neutron and muon facility. As well as delivering a low emittance-growth, loss-free beam, the pre-injector incorporates a chopper to facilitate arbitrary bunch time-structures. A 50 Hz, 0.9 ms (4.5% duty factor) RF-driven H ion source operates extremely reliably and with a large available parameter space via a novel microwave ignition gun and a wideband solid-state RF amplifier. A 202.5 MHz medium energy beam transport (MEBT) incorporates eight quadrupole magnets with integrated xy steerers, four quarter-wave re-bunching cavities, four extremely compact beam position monitors and an electrostatic chopper in just two metres of footprint. Beam has been extracted from the ion source and MEBT commissioning is due Spring 2023. Thereafter, the entire pre-injector will be soak-tested offline for a year before installing on the user facility.  
slides icon Slides TUPOJO21 [1.784 MB]  
poster icon Poster TUPOJO21 [3.053 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOJO21  
About • Received ※ 13 August 2022 — Revised ※ 16 August 2022 — Accepted ※ 29 August 2022 — Issue date ※ 05 September 2022
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