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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 10: Instrumentation and Beam Diagnostics II

AKBP 10.4: Vortrag

Mittwoch, 20. März 2024, 18:00–18:15, E 020

Status and Perspectives of the Laser-Compton Backscattering Source at the S-DALINAC* — •Alexander Smushkin¹, Michaela Arnold¹, Vincent Bagnoud^2,3, Joachim Enders¹, Maximilian Meier¹, and Norbert Pietralla¹ — ¹Institut für Kernphysik, TU Darmstadt, Germany — ²Institut für Angewandte Physik, TU Darmstadt, Germany — ³GSI, Darmstadt, Germany

Quasi-monochromatic highly polarized MeV-ranged photon beams can be provided for a variety of applications by Compton scattering of a laser beam off ultra-relativistic electrons through a restricted aperture. The energy of the scattered photons is highest for backscattering, i.e. a scattering angle of 180^∘. In order to provide a high-flux Laser-Compton backscattering (LCB) light source with narrow energy bandwidth, a high-power laser with high stability and high repetition rate needs to be precisely synchronized with an ultra-relativistic electron beam. Such a source has been designed and constructed at the Superconducting Darmstadt Linear Accelerator S-DALINAC. The LCB source will be capable to provide photons with high brilliance and energies around 0.1 MeV. It is envisaged to be used as diagnostics tool for on-line beam-energy and energy-spread measurements, as well as a future experimental setup in the three-turn Energy Recovery Linac (ERL) mode of the S-DALINAC. This contribution will present the current status and perspectives of the LCB source.

*Work supported by DFG (GRK 2128 AccelencE, GRK 2891 and Inst163/308-1 FUGG) and HMWK (cluster project ELEMENTS, ID 500/10.006, and LOEWE research cluster Nuclear Photonics)

Keywords: ERL; Photon Source; Compton Scattering; S-DALINAC; Electron Accelerator