Beam Dynamics Studies of the REX-ISOLDE Linac in Preparation for its Role as Injector for the HIE-ISOLDE SC Linac at CERN

摘要

The superconducting (SC) High Intensity and Energy (HIE) ISOLDE linac willreplace most of the existing accelerating infrastructure of the Radioactive ionbeam EXperiment (REX) at CERN, however, the 101.28 MHz RFQ and 5 MV IH cavitywill remain in the role of injector for the upgrade, boosting the beam up to anenergy of 1.2 MeV/u. We present the results of a beam dynamics investigation ofthe injector focused most critically on matching the longitudinal beamparameters from the RFQ to the SC machine, which is complicated largely by theIH cavity employing a Combined Zero Degree (KONUS) beam dynamics design. Thelongitudinal beam parameters at the RFQ are reconstructed from measurementusing the three gradient method and combined with beam dynamics measurementsand simulations of the IH structure to design the matching section for the SClinac.