Bonn 2010 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 57: Instrumentierung XI

HK 57.4: Vortrag

Donnerstag, 18. März 2010, 17:30–17:45, HG VIII

Performance Studies of the PANDA Luminosity Monitor — •Tsitohaina Randriamalala, James Ritman, Tobias Stockmanns, and Huagen Xu — Institute für Kernphysik, Forchungszentrum Jülich, Germany.

One of the main goals of the PANDA experiment at the FAIR facility is to measure the width of charmonium states with unprecedented precision by doing resonance scans of formation reactions in antiproton-proton annihilation. A good luminosity monitoring is crucial for this. Our studies are focused on monitoring the luminosity via the measurement of Coulomb scattering at small polar angles. As a consequence, the corresponding telescope is designed to have an angular acceptance of 3 to 8 mrad and will use high resolution silicon strip sensors. An overview of the basic concept and Monte Carlo based performance studies within the PANDARoot framework will be described. Simulations have been done for a prototype detector consisting of 4 planes of double-sided silicon strips, each consisting of 4 wafers of (2x5x0.03)cm with 50micron pitch arranged radially to the beam axis situated at about 10.5m. The influence of the beam and target sizes, and the beam emittance on the measurement will be also presented.

Supported in part by DAAD and FZ-Juelich