In this paper we discuss the possibilities of using a charge breeding scheme based on an Electron Beam Ion Source for beam preparation of a radioactive 11 C beam for hadron therapy. Test measurements under extreme operating conditions were conducted at the REX-ISOLDE facility to explore the limitations of the charge breeder for high-intensity, low-repetition-rate, molecular CO + beams. Based on our findings, we discuss different possible scenarios of coupling a charge breeder with either a medical synchrotron or linear accelerator. This paper is a highly condensed version of an exhaustive report on the topic [1], which we would like to refer to for further details.
A: A low energy beamline has been designed for the TwinEBIS setup. The beamline will be used to transport ions extracted from the electron beam ion source into an accelerating radio frequency quadrupole or into secondary devices, like a time of flight-mass spectrometer, attached to the beamline via a fast three way 20°ion switchyard. Optional injection of ions from an external source into the electron beam ion source is foreseen. In this article the general layout of the beamline is presented and supported with simulations of the ion-optical matching. Furthermore, the switchyard and gridded electrostatic lenses, chosen as the main focusing elements, have been simulated to assess their impact on the beam quality and the dynamics of secondary electrons emitted by the gridded lenses. In addition, the beamline includes general diagnostic devices, including a bidirectional pepperpot beam profiler. An overview of the diagnostic elements is given.
K: Accelerator modelling and simulations (multi-particle dynamics; single-particle dynamics); Beam Optics; Beam-line instrumentation (beam position and profile monitors; beamintensity monitors; bunch length monitors); Ion sources (positive ions, negative ions, electron cyclotron resonance (ECR), electron beam (EBIS))1Corresponding author.
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