0000000000222565

AUTHOR

Peter Bernhard

showing 3 related works from this author

Construction of large-area micro-pattern gaseous detectors

2016

Particle physics experiments often comprise tracking detectors with areas of up to a few square meters. If a spatial resolution of the order of 100μm and high-rate capability are required, Micro Pattern Gaseous Detectors (MPGD) are a cost-effective solution. However, the construction of large-area MPGDs is challenging, since tight fabrication tolerances have to be met to guarantee a stable and homogeneous performance. A precision granite table and an automated 3-D positioning system with an attached laser sensor, both inside a laminar-flow cell, have therefore been set up in the PRISMA Detector Lab at Mainz. Currently, this infrastructure is used to produce drift panels for the upgrade of t…

PhysicsLarge Hadron ColliderPositioning systemPhysics::Instrumentation and Detectorsbusiness.industryDetectorElectrical engineeringMicroMegas detectorTracking (particle physics)UpgradeGas electron multiplierParticle physics experimentsAerospace engineeringbusiness2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop (NSS/MIC/RTSD)
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Measurement of the response of Silicon Photomultipliers from single photon detection to saturation

2019

Abstract The development of Silicon Photomultipliers (SiPM) is very dynamic and a large variety of types exists. Important SiPM characteristics include the size and number of pixels, the gain, the photon detection efficiency (PDE), the recovery time, and correlated noise. SiPMs are particularly suitable for single-photon detection and low-intensity exposures. For photon numbers (PDE corrected) reaching the number of pixels, however, the sensors saturate. In this work, we present comprehensive response measurements for state-of-the-art SiPMs using an experimental setup based on a tunable picosecond laser. Several models are applied to the measured response curves, taking particularly correla…

PhysicsNuclear and High Energy PhysicsPhotonPicosecond laserPixelPhysics::Instrumentation and Detectors010308 nuclear & particles physicsbusiness.industryDynamic range01 natural sciences030218 nuclear medicine & medical imaging03 medical and health sciences0302 clinical medicineOpticsSilicon photomultiplier0103 physical sciencesParticle physics experimentsbusinessInstrumentationPhoton detectionSaturation (magnetic)Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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Development of Structured Scintillator Tiles for High-Granularity Calorimeters

2020

Calorimeters with a fine 3-D segmentation are considered to be a very promising technology for future high-energy physics experiments, since they provide in combination with particle flow algorithms excellent jet energy resolution and particle identification capabilities. Depending on the size, millions of individual channels consisting of a photosensor coupled to a scintillator tile have to be assembled. The usage of structured plastic scintillators with optically separated segments simplifies the mass production. We present the design, production, and performance of a 36 cm × 36 cm scintillator tile divided into 144 segments matching the geometry of the SiPM-based calorimeter frontend dev…

Materials sciencePhysics::Instrumentation and Detectorsbusiness.industryPhotodetectorScintillatorParticle identificationCalorimeterSilicon photomultiplierOpticsvisual_artvisual_art.visual_art_mediumElectronicsGranularityTilebusiness2020 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)
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