Normal text - click to edit MAPD/MPPC Characterization & Axial PET 1
Normal text - click to edit 1. Axial PET Long, axial mounted crystals 2 Radial PET Axial PET
Normal text - click to edit 1. Axial PET 3
Normal text - click to edit 1. Axial PET 4 Z-coordinate from Wavelength shifting fiber (WLS) strips Scintillation light not reflected in the crystal absorbed by WLS strip -> re- emitted as fluorescence light LYSO crystal and WLS strip readout by Hamamatsu MPPCs
Normal text - click to edit 1. Axial PET Current status at Cern: Small setup Measurement of coated crystals … 5
Normal text - click to edit 1. Axial PET Advantages: Better spatial resolution Identification of Compton effects No parallax error Very good timing resolution 6
Normal text - click to edit 2. MAPD Characterisation Cell Same measurements as Hege –Absolute gain –Dark rate –(Photon detection efficiency) Measurements done from dedicated program 7
Normal text - click to edit 2. MAPD Characterisation Cell 8 Pulser generator to LED Amplifier NIM discriminator Delay CAEN controller with ADC/QDC Linux PC with measurement software
Normal text - click to edit 2. MAPD Characterisation Cell 9 LED Optical filters inside Cooling pipes Heating Elements and Temperature sensor Amplifier
Normal text - click to edit 2. MAPD Characterisation Cell To be done: –Temperature control about to be finished –Measurement software to be installed 10