Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment · 1997 · 10 citations · 2 references
Natural SciencesAstronomyRadiation DetectionRadiation MeasurementX-ray AstronomyDetector TechnologyParticle DetectorsX-ray DetectionX-ray DetectorsDetector ConstructionDetector DesignDetector FabricationDetector Material EffectsInitial Performance EvaluationLarge-area Detector ArraysPosition-sensitive DetectorsVertex Detectors
The SLD collaboration completed construction of a new CCD vertex detector (VXD3) in January 1996 and started data taking in April 1996 with the new system. VXD3 is an upgrade of the original CCD vertex detector, VXD2, which had successfully operated in SLD for three years. VXD3 consists of 96 large area CCDs, each having 3.2 million 20 μm × 20 μm pixels. By reducing the detector material and lengthening the lever arm, VXD3 is expected to improve secondary vertex resolution by about a factor of two compared with VXD2. The new three-layered structure enables stand-alone tracking without any ambiguity and its extended size along the beam direction improves the polar-angle coverage to |cos θ| < 0.85. An overview of this detector system and its initial performance are described.
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