Darmstadt 2016 – wissenschaftliches Programm

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SYER: Symposium The Physics of Energy-Recovering LINACs

SYER 2: The Physics of Energy-Recovering LINACs II

SYER 2.2: Hauptvortrag

Mittwoch, 16. März 2016, 11:30–12:00, S1/05 122

MESA - an ERL project for particle physics experiments* — •Florian Hug — Institut für Kernphysik, Universität Mainz

The Mainz Energy-recovering Superconducting Accelerator (MESA) will be constructed at the Institut für Kernphysik of the Johannes Gutenberg University of Mainz. The accelerator is a low energy continuous wave (CW) recirculating electron linac for particle physics experiments. MESA will be operated in two different modes serving mainly two experiments: the first is the external beam (EB) mode, where the beam is dumped after being used with the external fixed target experiment P2, whose goal is the measurement of the weak mixing angle with highest accuracy. The required beam current for P2 is 150 μA with polarized electrons at 155 MeV. In the second operation mode MESA will be run as an energy recovery linac (ERL). In an ERL the energy of the electrons is recovered after their experimental use by decelerating them in the superconducting acceleration cavities. The experiment served in this mode is a (pseudo) internal fixed target experiment named MAGIX. It demands 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. Within this talk an overview of the MESA project will be given highlighting the challenges of operation with high density internal gas targets and the (*new*) physics applications.

*Work supported by DFG through cluster of excellence PRISMA and CRC 1044