Search results for "Detective quantum efficiency"

showing 2 items of 2 documents

Latest improvements of microchannel-plate PMTS

2020

Abstract The DIRC detectors of the PANDA experiment at FAIR will use multi-anode MCP-PMTs as photon sensors. After long and extensive R&D work the performance parameters of the recent 2” MCP-PMT models are converging towards the required values. The lifetime of most ALD-coated MCP-PMTs is well surpassing the DIRC requirements with the best tube currently reaching > 22 C/cm2 integrated anode charge without aging. The performance of the most advanced MCP-PMTs from PHOTONIS and Hamamatsu fulfill basically all requirements with a highlight being the high detective quantum efficiency (DQE) of almost 30% for the PHOTONIS 9002108. The improvements of the latest MCP-PMT models compared to former tu…

Detective quantum efficiencyPhysicsNuclear and High Energy PhysicsPhotonOpticsbusiness.industryDetectorMicrochannel plate detectorTube (fluid conveyance)Charge (physics)businessInstrumentationAnodeNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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Performance data of optically stimulable irradiated materials (doped alkali halides) oriented for imaging and dosimetry purposes

1997

Performance characteristics of a doped alkali halide (KBr:In)-based imaging plate (IP) and dosemeter (D) both the devices utilizing optically stimulated luminescence (OSL) and suitable for UV-light and x-ray energy recording are described. By exploiting (silicon) photodiode array as a photodetector, the detective quantum efficiency of 0.1 for IP (KBr:In) can be achieved. A very wide dynamic range, 1010:1 for UV (6.35 eV) and 1011:1 for x-ray (44 kV tube voltage) OSL recording at the spatial resolution of 1 mm2, is favorable for digital imaging and considerably improves image quality. These possibilities are illustrated by presenting available information capacities, energy consumption per b…

Materials scienceOptically stimulated luminescencebusiness.industryPhotodetectorPhotodiodelaw.inventionDetective quantum efficiencyOpticslawWide dynamic rangeOptoelectronicsQuantum efficiencyContrast ratioLuminescencebusinessSPIE Proceedings
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