Spurrekonstruktion in der Hexagonal-Driftkammer am Experiment COSY-11

The experimental facility COSY-11 at the cooler synchrotron and storage ring COSY at the Research Center Juelich investigates the production of small width mesons in the proton-proton- and proton-deuteron-interaction close to threshold. At COSY-11, the trajectories of positively charged ejectiles are measured by means of two planar drift chamber systems. In summer 2000, a drift chamber with hexagonal cells was added to the COSY-11 setup. Consequently, the acceptance for short-living, positively charged mesons like pions and kaons is increased. The trajectories in the hexagonal chamber can be determined with the new track reconstruction software in three dimensions. With the data of the COSY-11 beamtime in March 2001 a calibration was performed. The position resolution, determined as the standard deviation of the experimental data, amounts to 450 #mu#m. (orig.)SIGLEAvailable from TIB Hannover: RA 831(3949) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman