Design and Characterisation of a Compton-Polarimeter in Telescope Configuration for X-ray Energies up to 1 MeV | IEEE Conference Publication | IEEE Xplore

Design and Characterisation of a Compton-Polarimeter in Telescope Configuration for X-ray Energies up to 1 MeV


Abstract:

Compton-polarimeters based on planar semiconductor detectors are successfully operated in experiments at particle accelerators (like GSI/FAIR) and synchrotron facilities ...Show More

Abstract:

Compton-polarimeters based on planar semiconductor detectors are successfully operated in experiments at particle accelerators (like GSI/FAIR) and synchrotron facilities (like DESY) to analyze the linear polarization of photons originating from various atomic or nuclear processes. More applications may be found in the field of medical and astrophysics. Within the SPARC collaboration (Stored Particles Atomic Physics Research Collaboration) we have built a Compton-polarimeter in telescope configuration from a 2D-Si(Li)- and a 2D-HPGe-detector. The first layer, the 2D-Si(Li), is optimized for polarization measurements in the energy range from 60 keV to 250 keV. The Compton scattering of the incident photon and the absorption of the scattered photon are detected simultaneously. This polarimeter configuration already measured fantastic results in QED experiments at the synchrotron facility DESY. To extend the applicability in physics we have to cover a wider photon energy range up to the 1 MeV regime. For this purpose we placed a 2D-HPGe as an absorber for higher photon energies behind the 2D-Si(Li). We will report on the design of the new Compton-polarimeter and present the results of the laboratory tests of the system.
Date of Conference: 26 October 2024 - 02 November 2024
Date Added to IEEE Xplore: 25 September 2024
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Conference Location: Tampa, FL, USA

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