Author: Friederich, S.
Paper Title Page
THPOPT045 OPAL Simulations of the MESA Injection System 2697
 
  • S. Friederich
    IKP, Mainz, Germany
  • K. Aulenbacher
    HIM, Mainz, Germany
  • K. Aulenbacher
    GSI, Darmstadt, Germany
  • K. Aulenbacher, C.P. Stoll
    KPH, Mainz, Germany
 
  Funding: This work is supported by the DFG excellence initiative PRISMA+.
The MESA injection system will produce the spin-polarized electron beam for the upcoming accelerator MESA in Germany. The photoemission electron source (STEAM) will deliver 150 uA of spin-polarized electrons from GaAs-based photocathodes for the P2 experiment. Afterwards the low-energy beam transportation system (MELBA) can rotate the spin using two Wien filters and a solenoid for polarization measurements and to compensate for the spin precession in MESA. A chopper and buncher system prepares the phase space for the first acceleration in the normal-conducting pre-booster MAMBO. First OPAL simulation results of MELBA were presented at IPAC’21. Meanwhile these simulations have been extended by a 270-degree-bending alpha magnet as well as the electrostatic and magnetostatic fieldmaps of the Wien filters. Furthermore the fieldmaps of the 4 modules of the pre-accelerator MAMBO have been implemented. Hence, the complete MESA injection system could be simulated in OPAL and the results will be shown.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-THPOPT045  
About • Received ※ 30 May 2022 — Revised ※ 14 June 2022 — Accepted ※ 15 June 2022 — Issue date ※ 05 July 2022
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THPOPT007 High Bunch Charges in the Second Injection Beamline of MESA 2574
 
  • A.A. Kalamaiko, K. Aulenbacher, M.A. Dehn, S. Friederich, C.P. Stoll
    KPH, Mainz, Germany
 
  MESA (Mainz Energy-recovering Superconducting Accelerator) is an accelerator with two laser-driven electron sources (polarized and unpolarized) operating at 100 kV which is under construction at the Johannes Gutenberg University in Mainz. The unpolarized electron source MIST (MESA Injector Source Two) allows to produce high charged electron bunches with charge up to 7.7 pC. This source and a Mott polarimeter will be arranged on the same height above the MESA injector main beamline. A parallel shifting beamline was developed which allows to transport high charged beam from the source MIST to the main MESA beamline. Moreover, the designed beamline allows to transport beam from the electron source STEAM to the Mott polarimeter. This report is dedicated to the design of the separation beamline which transports and compresses highly charged electron bunches from the electron source MIST to the first acceleration section of MESA.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-THPOPT007  
About • Received ※ 08 June 2022 — Revised ※ 15 June 2022 — Accepted ※ 23 June 2022 — Issue date ※ 23 June 2022
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