Author: Hug, F.
Paper Title Page
MOPSPP009 Beam Break Up Simulations for the MESA Accelerator 26
 
  • C.P. Stoll, F. Hug, D. Simon
    IKP, Mainz, Germany
 
  Funding: Supported by DFG through GRK 2128
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 behavior of the superconducting cavities under recirculating operation with high beam currents simulations of beam breakup have to be performed. Current results for transverse beam break up calculations and simulations with Beam Instability (bi) code are presented.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ERL2017-MOPSPP009  
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TUIDCC005
ERL Recirculation Optics for MESA  
 
  • F. Hug
    IKP, Mainz, Germany
 
  Funding: Work supported by DFG through the PRISMA cluster of excellence EXC 1098/2014 and RTG 2128 and by the European Union's Horizon 2020 Research and Innovation programme under Grant Agreement No 730871.
MESA is a recirculating superconducting accelerator under construction at Johannes Gutenberg-Universität Mainz. It will be used for high precision particle physics experiments in two different operation modes: external beam (EB) mode and energy recovery (ERL) mode. The operating beam current and energy in EB mode is 0.15 mA with polarized electrons at 155 MeV. In ERL mode a beam of 1 mA at 105 MeV will be available. In a later construction stage of MESA the beam current in ERL-mode shall be upgraded to 10 mA. The recirculating main linac follows the concept of a double sided accelerator design with vertical stacking of return arcs. Acceleration is done by in total four TESLA/XFEL 9-cell SRF-cavities mounted in two modified ELBE cryomodules. Within this contribution the recirculation optics for MESA will be presented focussing on achieving best energy spread at the experimental setups in recirculation ERL and non-ERL operation.
 
slides icon Slides TUIDCC005 [29.931 MB]  
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