Frankfurt 2014 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 46: Poster
HK 46.5: Poster
Thursday, March 20, 2014, 16:00–18:00, HZ Poster
Absolute Photon Flux and γ p → p π0 Cross Section Determination at the BGO-OD Experiment* — Marvin Bleckwenn, Daniel Geffers, and •Thomas Zimmermann for the BGO-OD collaboration — Physikalisches Institut, Universität Bonn
The BGO-OD experiment, presently under construction at the electron accelerator ELSA at Bonn university, is intended for the systematic investigation of the photo-production of mesons.
It consists of the highly segmented BGO-Ball with a particle tracking spectrometer at forward angles. The BGO-Ball is ideal for the identification of multi-photon final states with accurate time and energy resolution. The forward spectrometer combines a magnetic field with a series of tracking detectors, drift chambers and time of flight walls, allowing precise momentum reconstruction of forward travelling particles.
As proof for correct functionality of the BGO-OD experiment and the analysis, the π0 cross section was determined. This required measurement of the absolute photon flux and simulation of the experimental acceptance.
*Supported by the DFG (SFB/TR-16)