6533b861fe1ef96bd12c5980
RESEARCH PRODUCT
Detector characterization and first coincidence tests of a Compton telescope based on LaBr3 crystals and SiPMs
L. RauxJohn BarrioC. De La TailleA. CrespoS. CallierJorge CabelloCarlos LacastaMagdalena RafecasMagdalena RafecasGabriela Llosasubject
Nuclear and High Energy PhysicsPhysics::Instrumentation and DetectorsCompton telescopeSiPM01 natural sciences7. Clean energyCoincidence030218 nuclear medicine & medical imaginglaw.inventionTelescope03 medical and health sciencesHadron therapy0302 clinical medicineOpticsSilicon photomultiplierApplication-specific integrated circuitlaw0103 physical sciencesCompton imaging[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det][SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/MicroelectronicsInstrumentationPhysicsContinuous crystal010308 nuclear & particles physicsbusiness.industryResolution (electron density)DetectorMPPCG-APDLaBr3Full width at half maximumbusinessdescription
International audience; A Compton telescope for dose monitoring in hadron therapy consisting of several layers of continuous LaBr3 crystals coupled to silicon photomultiplier (SiPM) arrays is under development within the ENVISION project. In order to test the possibility of employing such detectors for the telescope, a detector head consisting of a continuous 16 mm×18 mm×5 mm LaBr3 crystal coupled to a SiPM array has been assembled and characterized, employing the SPIROC1 ASIC as readout electronics. The best energy resolution obtained at 511 keV is 6.5% FWHM and the timing resolution is 3.1 ns FWHM. A position determination method for continuous crystals is being tested, with promising results. In addition, the detector has been operated in time coincidence with a second detector layer, to determine the coincidence capabilities of the system. The first tests are satisfactory, and encourage the development of larger detectors that will compose the telescope prototype.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-07-04 |