Notes on the HIE-ISOLDE HEBT

The HEBT will need to transfer the beam from the HIE-ISOLDE linac to up to four experimental stations over a wide range of energies from 0.45 MeV/u to 10 MeV/u, which equates to a maximum beam rigidity of 2 Tm for A/q = 4.5. As the linac will be installed in stages, so too will the HEBT, with the first two experimental stations being installed before a larger U-bend that will take the beam to a third experimental station and a spectrometer. The beam parameters at output fromthe linac are presented along with a preliminary scheme for the HEBT, which is consistent with the experiments’ footprints. The first beam optics calculations were carried out using TRACE3D. Supporting documentation can be found on the CERN DFS at \\cern.ch\dfs\Users\m\mfraser\Public\HEBT.