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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 4: Radiofrequency and Beam Dynamics

AKBP 4.4: Talk

Wednesday, March 22, 2017, 10:15–10:30, MOL 213

Beam dynamical behaviour of the MESA SRF-structures under recirculating operation — •Christian Stoll and Daniel Simon — Institut für Kernphysik, Johannes Gutenberg Universität, Mainz

Beam break up simulations for the MESA Accelerator*

MESA is a recirculating superconducting accelerator under construction at Johannes Gutenberg-Universität Mainz. It will be operated in two different modes: the first is the external beam (EB) mode, where the beam is dumped after being used at the experiment. The required beam current in EB mode is 150 μA with polarized electrons at 155 MeV. In the second operation mode MESA will be run as an energy recovery linac (ERL) with an unpolarized beam of 1 mA at 105 MeV. In a later construction stage of MESA the achievable beam current in ERL-mode shall be upgraded to 10 mA. To understand the behaviour of the superconducting cavities under recirculating operation with high beam currents, simulations of beam breakup have to be performed. The status of the analytical approximations and numerical simulations is presented.

*Supported by DFG through GRK 2128