MPGDs in Compton imaging with liquid-xenon
| Autor: | Lamblin Jacob, Stutzmann Jean-Sebastien, Morteau Eric, Carduner Herve, Duval Samuel, Oger Tugdual, Cussonneau Jean-Pierre, Breskin Amos, Le Ray Patrick, Thers Dominique |
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| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Photomultiplier
Scintillation Photon Materials science Physics - Instrumentation and Detectors business.industry Physics::Instrumentation and Detectors Electron multiplier Detector FOS: Physical sciences chemistry.chemical_element MicroMegas detector Instrumentation and Detectors (physics.ins-det) Physics - Medical Physics Optics Xenon chemistry Ionization Medical Physics (physics.med-ph) business Instrumentation Mathematical Physics |
| Popis: | The interaction of radiation with liquid xenon, inducing both scintillation and ionization signals, is of particular interest for Compton-sequences reconstruction. We report on the development and recent results of a liquid-xenon time-projection chamber, dedicated to a novel nuclear imaging technique named "3 gamma imaging". In a first prototype, the scintillation is detected by a vacuum photomultiplier tube and the charges are collected with a MICROMEGAS structure; both are fully immersed in liquid xenon. In view of the final large-area detector, and with the aim of minimizing dead-zones, we are investigating a gaseous photomultiplier for recording the UV scintillation photons. The prototype concept is presented as well as preliminary results in liquid xenon. We also present soft x-rays test results of a gaseous photomultiplier prototype made of a double Thick Gaseous Electron Multiplier (THGEM) at normal temperature and pressure conditions. presented at MPGD09, CRETE, June 2009; to be published in JINST Proceedings, PDF, 10 pages, 11 figures |
| Databáze: | OpenAIRE |
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