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HK: Fachverband Physik der Hadronen und Kerne

HK 1: Computing I

HK 1.3: Vortrag

Montag, 11. März 2024, 17:15–17:30, HBR 14: HS 1

Exploring the Effects of Longitudinally Polarized Electrons on the Degree of Linear Polarization of Crystalline Bremsstrahlung — •Leoniedas Reschke for the CBELSA/TAPS collaboration — Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Nussallee 14-16, 53115 Bonn

The baryon excitation spectrum is probed with a real photon beam at several experimental facilities. In the case of single pseudoscalar meson photoproduction, a complete analysis of the process requires the measurement of not only the unpolarized cross section but also various single and double-polarization observables. Certain polarization observables require the use of linearly or circularly polarized photons. Typically, non-polarized electrons in combination with a diamond radiator, are employed to generate linearly polarized bremsstrahlung, while longitudinally polarized electrons in combination with an amorphous radiator, are employed to generate circularly polarized bremsstrahlung. The combination of longitudinally polarized electrons with a crystalline radiator, such as a diamond, results in elliptically polarized photons. The software package Diracxx offers a tool for computing the partial differential cross-section corresponding to a specific recoil momentum transferred from the incoming electron to the atomic nucleus of a radiator material. This package enables the swift and sufficiently precise computation of polarization spectra arising from the combination of a diamond crystal with longitudinally polarized electrons. This presentation shows results derived from these computational studies.

Keywords: Polarization; Bremsstrahlung