Design Studies for a Tracking Upgrade of the Crystal Barrel Experiment at ELSA and Installation of a Tracking Test Bench

Abstract

Ever since mankind was interested in the understanding of the universe and especially the matter in it. The fundamental building blocks of matter seem to be quarks and gluons, whose interactions are investigated in hadron physics. To study this strong interaction different experimental approaches can be used. One way is to do spectroscopy similar to atomic physics.<br /> The Crystal Barrel experiment at ELSA performs spectroscopy of nucleons to learn more about the strong interaction. A major improvement of this experimental setup will be the introducing of charged particle tracking as it will be shown in this thesis.<br /> Different detector concepts will be discussed concerning feasibility, material budget and especially momentum resolution. It will turn out that a Time Projection Chamber (TPC) is the optimal solution.<br /> Then it will be shown how a prototype TPC is tested using a newly installed tracking test bench with an electron beam and obtained results will be presented.<br /> The design of the final TPC and its integration into the Crystal Barrel experiment will be discussed as well as methods to calibrate the detector.