Darmstadt 2016 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 33: Hadron Structure and Spectroscopy VI
HK 33.5: Talk
Wednesday, March 16, 2016, 15:30–15:45, S1/01 A5
Linearly polarised photons at the BGO-OD experiment* — •Andreas Bella — Physikalisches Institut, Universität Bonn
The BGO-OD experiment, located at the ELSA accelerator of the University of Bonn studies photoproduction reactions off the nucleon. A real, energy-tagged photon beam is produced via bremsstrahlung by exposing a thin radiator to the electron beam provided by ELSA.
Linear polarisation is obtained by coherent bremsstrahlung. To do this we use a 570 µm thick diamond radiator.
The degree of polarisation is obtained from the bremsstrahlung spectrum. A consistency check is performed by extracting the already well measured beam asymmetry Σ in π 0 photoproduction off the proton.
*Supported by DFG (SFB/TR-16)