Mainz 2012 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 53: Poster – Instrumentation

HK 53.9: Poster

Thursday, March 22, 2012, 14:00–16:00, P Foyer

Tagger electronics for the BGO-OD experiment* — •Francesco Messi — Physikalisches Institut, Bonn, Germany

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 off the nucleon. The experiment will use bremsstrahlung photons from an e^- beam incident upon a thin metal radiator. The photon energy will be measured via the deflection of the electrons in the magnetic field of a photon tagger.

The electrons are detected in a 128 channel hodoscope with an expected rate up to 10MHz per single channel and 50MHz for the total detector. A coincidence between two neighbouring channels is required to suppress background. Additional to the measurement of the photon energy, time information from the detection of the deflected electrons will be used for coincidence measurements in the BGO-OD experiment.

To match these requirements,a new tagger electronics was developed. The final prototype for the Front-End electronics was designed and tested. The tests results will be presented in this poster.

*Supported by the DFG (SFB/TR-16)