München 2019 – scientific programme
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 15: Poster session
AKBP 15.20: Poster
Thursday, March 21, 2019, 16:30–18:00, Durchgangshalle
Dispersion matching with space charge in energy recovery linacs — •Aamna Khan1, Oliver Boine-Frankenheim1, and Christian Stoll2 — 1TEMF, Technische Universität Darmstadt, Schlossgartenstr. 8, 64289 Darmstadt, Germany — 2KPH, Johannes Gutenberg-Universität Mainz, Becher-Weg 45, 55128 Mainz, Germany
Dispersion matching of space charge (SC) dominated beams is a concern for high-intensity electron bunches traversing through bends, as for in the recirculation arc of an energy recovery linac (ERL) to a linac. For proper matching in presence of dispersion and SC, it’s important to consider both centroid momentum and momentum spread of the bunch to prevent any emittance growth and phase space degradation. Also, it’s necessary to couple transverse-longitudinal plane, as SC modified momentum compaction R56 can affect the efficiency of energy recovery process by varying the time of flight of electrons. We present a simple 3D coupled transverse-longitudinal envelope approach for dispersion matching with SC, benchmarked against particle tracking simulations with ELEGANT, for a 5MeV low energy, 180∘ injection arc matching with first cryomodule of multi-turn Mainz Energy-recovering Superconducting Accelerator (MESA).