JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - CONF AU - Lawrie, S.R. AU - Abel, R.E. AU - Cahill, C. AU - Faircloth, D.C. AU - Letchford, A.P. AU - Macgregor, J.H. AU - Patel, S. AU - Sarmento, T.M. AU - Speed, J.D. AU - Tarvainen, O.A. AU - Whitehead, M. AU - Wood, T. ED - McIntosh, Peter ED - Burt, Graeme ED - Apsimon, Robert ED - Schaa, Volker R.W. TI - The Pre-Injector Upgrade for the ISIS H⁻ Linac J2 - Proc. of LINAC2022, Liverpool, UK, 28 August-02 September 2022 CY - Liverpool, UK T2 - International Linear Accelerator Conference T3 - 31 LA - english AB - 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. PB - JACoW Publishing CP - Geneva, Switzerland SP - 398 EP - 401 KW - ion-source KW - plasma KW - linac KW - MEBT KW - MMI DA - 2022/09 PY - 2022 SN - 2226-0366 SN - 978-3-95450-215-8 DO - doi:10.18429/JACoW-LINAC2022-TUPOJO21 UR - https://jacow.org/linac2022/papers/tupojo21.pdf ER -