Wuppertal 2015 – scientific programme
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 5: Poster
AKBP 5.13: Poster
Tuesday, March 10, 2015, 11:00–19:00, Foyer Ebene G.10
Simulation study of beam halo collimation in the heavy ion synchrotron SIS 100 — •Ivan Prokhorov1, Ivan Strasik2, and Oliver Boine-Frankenheim1,2 — 1TU Darmstadt, Darmstadt, Germany — 2GSI Helmholtzzentrum, Darmstadt. Germany
The FAIR synchrotron SIS 100 will be operated with high-intensity heavy-ion beams. Hollow electron beam collimation is studied as an option to augment the SIS 100 collimation system for partially-stripped heavy-ion beam s, e.g., U28+.
Hollow electron beam collimator is a pulsed magnetically confined electron beam with the hollow density profile overlapping with the primary ion beam. It enhances diffusion in the halo by giving a non-linear kick to halo particle in the electric field of electrons space charge, whereas the beam core stays unaffected. Hollow electron beam acts as a soft scatterer and in contrary to conventional solid material collimators does not procure the shower of secondaries, charge exchange and heat loads in the collimator body.
In this work numerical simulation studies of the beam halo dynamics in the presence of the hollow electron beam collimator is shown. Together with estimations of halo cleaning efficiencies for different synchrotron regimes.