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HK: Fachverband Physik der Hadronen und Kerne

HK 39: Instrumentierung - Poster

HK 39.21: Poster

Mittwoch, 23. März 2011, 14:00–16:00, Foyer Chemie

Status of the luminosity monitor for the PANDA experiment — •Anastasia Karavdina, Achim Denig, Miriam Fritsch, Werner Lauth, Mathias Michel, Elisabeth Panzenboeck, and Tobias Weber — Institut für Kernphysik, Universität Mainz

A good luminosity monitoring is crucial for the PANDA experiment at the planned antiproton accelerator HESR (FAIR, Darmstadt, Germany). For the measurement of the luminosity one can use the elastic antiproton-proton scattering at extreme forward angles. This exploits the fact that the elastic scattering in the range of very small momentum transfer (and thus very small scattering angle) can be calculated exactly from QED. At larger scattering angles the hadronic component of the elastic scattering dominates and this has to be taken from measurements. Unfortunately there are no or only a few data with large uncertainties available in the momentum range we need for PANDA.

The current design for the luminosity monitor are four planes of eight double-sided silicon microstrip detectors with trapezoidal shape. The detector itself has an angular acceptance from 3 to 8 mrad and good spatial resolution due to using sensors with high resolution (50 um pitch). An overview of the basic concept and Monte Carlo based performance studies within the PANDARoot framework will be presented.

gefördert von BMBF and HGF