Dresden 2013 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 75: Detektoren und Detektorsysteme 3
T 75.5: Vortrag
Donnerstag, 7. März 2013, 17:45–18:00, GER-052
Quality assurance set-up for a new Positron Emission Tomography detector — •Daniele Cortinovis1,2, Erika Garutti2, Alessandro Silenzi1, Chen Xu1,2, and Milan Zvolsky1,2 — 1DESY Hamburg — 2University of Hamburg
The PicoSEC-MCNet Project (PICOsecond Siliconphotomultiplier-Electronics- & Crystal research-Marie-Curie-Network) aims to develop a new class of ultra-fast photon detectors for High Energy Physics (HEP) and Positron Emission Tomography (PET). This actual technology development is covered in the EndoTOFPET-US project. A new Time Of Flight PET detector will improve the diagnosis capability of pancreatic and prostate tumors with unprecedented spatial resolution. The detector consists of two parts: a PET head mounted on an ultrasound probe and an external plate. Photons are detected by scintillating crystals individually readout by silicon photomultipliers (SiPMs). Their fast response allows to meet the critical requirement of at least 200 ps (FWHM) coincidence time resolution, essential for a spatial resolution of 3 cm along the Line Of Response (LOR) and efficient background rejection. DESY together with Hamburg University are responsible for the quality assurance and the commissioning of the whole system, and the necessary infrastructure is being set up. Within this task, the light yield uniformity for the combined scintillator-SiPM system of the external plate must be measured. This talk will introduce and describe the set-up which will allows a fast, automatic and high precision measurement of the light yield for the 4096 combined scintillator-SiPMs of the external plate.