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T: Fachverband Teilchenphysik
T 44: Experimental Methods (general) 2
T 44.5: Talk
Tuesday, March 22, 2022, 17:15–17:30, T-H29
Simulation Studies for the Polarimetry of a LPA Electron Beam — •Jennifer Popp1,2, Simon Bohlen1, Felix Stehr1,2, Jenny List1,2, Gudrid Moortgat-Pick2,1, Jens Osterhoff1, and Kristjan Põder1 — 1Deutsches Elektronen-Synchrotron DESY, Hamburg — 2University of Hamburg
Polarized particle beams are a key instrument for the investigation of spin-dependent processes and Laser Plasma Acceleration (LPA) has become a promising alternative to conventional RF accelerators. However, so far, it has only been theoretically shown that polarized LPA beams are possible.
The LEAP (Laser Electron Acceleration with Polarization) project at DESY aims to demonstrate this experimentally for the first time, using a prepolarized plasma target.
Because it is best suited for the expected energy range, the electron polarization will be measured with photon transmission polarimetry. It makes use of the production of circularly polarized Bremsstrahlung during the passage of the electrons through a suitable target. The photon polarization is then measured with the aid of the transmission asymmetry related to the magnetization direction of an iron absorber.
In this contribution an overview of the LEAP project will be given and a design for the polarimeter, simulation studies, and requirements on beam and polarimeter parameters for reliable polarization measurements will be presented.