Small animal positron emission tomography with multi-wire proportional counters

Diese Arbeit behandelt Simulation, Design, Konstruktion und Test von Vieldrahtproportionalzähler (MWPC) basierten Detektoren für die Positronen-Emissions-Tomographie. Die kommerzielle quadHIDAC Klein-Tier PET Kamera wurde durch Simulationen untersucht und quantifiziert. Außerdem wurde die MSPET Kamera, ein optimierter, neuartiger Vieldrahtproportionalkammer-basierter Detektor für hochauflösende PET entwickelt, gebaut und getestet. This thesis treats the simulation, design, construction, testing and performance evaluation of multi-wire proportional counter (MWPC) based detectors for positron emission tomography. Simulations where used for the evaluation and quantification of the commercial quadHIDAC small animal PET camera. In addition the MSPET device, a new, optimised, multi-wire proportional counter-based detector for high-resolution PET was developed, constructed and tested

The ALICE Transition Radiation Detector: construction, operation, and performance

The Transition Radiation Detector (TRD) was designed and built to enhance the capabilities of the ALICE detector at the Large Hadron Collider (LHC). While aimed at providing electron identification and triggering, the TRD also contributes significantly to the track reconstruction and calibration in the central barrel of ALICE. In this paper the design, construction, operation, and performance of this detector are discussed. A pion rejection factor of up to 410 is achieved at a momentum of 1 GeV/ c in p–Pb collisions and the resolution at high transverse momentum improves by about 40% when including the TRD information in track reconstruction. The triggering capability is demonstrated both for jet, light nuclei, and electron selection