Darmstadt 2016 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 8: Polarized Beams

AKBP 8.7: Talk

Tuesday, March 15, 2016, 18:00–18:15, S1/05 24

Challenges in designing a very compact 130 MeV Møller Polarimeter for the S-DALINAC* — •Thore Bahlo, Joachim Enders, Thorsten Kürzeder, Norbert Pietralla, and Jan Wissmann — Institut für Kernphysik, TU Darmstadt, Darmstadt, Germany

The Superconducting Darmstadt Linear Accelerator is capable of accelerating polarized electron beams produced by the S-DALINAC Polarized Injector (SPIN). For electron energies of up to 14 MeV it is possible to measure the absolute polarization of the electrons with two Mott polarimeters that are already mounted in the injector beamline. Until now it is not possible to measure the absolute electron beam polarization after the passage of the main accelerator. Therefore a Møller polarimeter for energies between 50 MeV and 130 MeV is currently being developed. The rather low incident beam energy, the variability of the incident beam energy, and spatial restrictions necessitate a compact set-up with large acceptance. The very restrictive boundary conditions introduce technical and geometrical challenges. We will present the design of the target chamber, of the separation dipole magnet as well as the beam dump. *Supported by the DFG under grant No. SFB 634