Search results for "Instrumentation"

showing 10 items of 4914 documents

Summary of the Beauty '96 Conference

1996

Abstract We review a few important subjects of the Beauty '96 Conference. This includes, in particular, prospects for future experiments on CP violation in B decays.

PhysicsNuclear and High Energy PhysicsParticle physicsmedia_common.quotation_subjectBeautyCP violationInstrumentationmedia_commonNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
researchProduct

A luminosity monitor for the A4 parity violation experiment at MAMI

2005

A water Cherenkov luminosity monitor system with associated electronics has been developed for the A4 parity violation experiment at MAMI. The detector system measures the luminosity of the hydrogen target hit by the MAMI electron beam and monitors the stability of the liquid hydrogen target. Both is required for the precise study of the count rate asymmetries in the scattering of longitudinally polarized electrons on unpolarized protons. Any helicity correlated fluctuation of the target density leads to false asymmetries. The performance of the luminosity monitor, investigated in about 2000 hours with electron beam, and the results of its application in the A4 experiment are presented.

PhysicsNuclear and High Energy PhysicsParticle physicsmedia_common.quotation_subjectFOS: Physical sciencesElectronAsymmetryHelicityParticle detectorCharged particleBaryonNuclear physicsHigh Energy Physics::ExperimentNuclear Experiment (nucl-ex)Nuclear ExperimentInstrumentationCherenkov radiationmedia_commonLeptonNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
researchProduct

Use of aluminum nitride for UV radiation dosimetry

2007

Abstract An investigation of AlN ceramics for applications in UV radiation detection shows the advantages of using the 480 nm emission band for optically stimulated luminescence signal detection instead of the previously used 400 nm emission band since the rate of decrease of the response signal at room temperature is lower than that of the 400 nm band, and its excitation region falls in the UV-B range.

PhysicsNuclear and High Energy PhysicsPhotoluminescenceOptically stimulated luminescencebusiness.industryNitrideRadiationSignalParticle detectorUltraviolet lightOptoelectronicsDosimetrybusinessInstrumentationNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
researchProduct

The ATLAS Tile Calorimeter performance at LHC

2013

The Tile Calorimeter (TileCal), the central section of the hadronic calorimeter of the ATLAS experiment, is a key detector component to detect hadrons, jets and taus and to measure the missing transverse energy. Due to the very good muon signal to noise ratio it assists the spectrometer in the identification and reconstruction of muons. TileCal is built of steel and scintillating tiles coupled to optical fibers and read out by photomultipliers. The calorimeter is equipped with systems that allow to monitor and to calibrate each stage of the read-out system exploiting different signal sources: laser light, charge injection and a radiactive source. The performance of the calorimeter has been …

PhysicsNuclear and High Energy PhysicsPhotomultiplierLarge Hadron ColliderCalorimeter (particle physics)Physics::Instrumentation and DetectorsRadioactive sourceATLAS experimentDetectorNuclear physicsmedicine.anatomical_structureTile CalorimeterAtlas (anatomy)medicineCalibrationHadronic CalorimeterHigh Energy Physics::ExperimentDetectors and Experimental TechniquesTileCalInstrumentationNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
researchProduct

ALICE T0 detector

2005

T0-the fast timing and trigger detector for the ALICE experiment at CERN LHC-is described. Performance of the T0 prototype measured with a mixture of 6 GeV/c negative pions and kaons is given. The best time resolution (28 ps r.m.s.) was reached with a radiator diameter matching that of the photocathode. The results for all the tested radiator sizes are considerably better than 50 ps-the minimum requirement for the ALICE experiment.

PhysicsNuclear and High Energy PhysicsPhotomultiplierLarge Hadron ColliderPhysics::Instrumentation and DetectorsCherenkov detectorDetectorPhotocathodelaw.inventionNuclear physicsPionNuclear Energy and EngineeringlawRadiator (engine cooling)High Energy Physics::ExperimentElectrical and Electronic EngineeringALICE (propellant)Nuclear ExperimentIEEE Transactions on Nuclear Science
researchProduct

Prototyping the PANDA Barrel DIRC

2014

The design of the Barrel DIRC detector for the future PANDA experiment at FAIR contains several important improvements compared to the successful BABAR DIRC, such as focusing and fast timing. To test those improvements as well as other design options a prototype was build and successfully tested in 2012 with particle beams at CERN. The prototype comprises a radiator bar, focusing lens, mirror, and a prism shaped expansion volume made of synthetic fused silica. An array of micro-channel plate photomultiplier tubes measures the location and arrival time of the Cherenkov photons with sub-nanosecond resolution. The development of a fast reconstruction algorithm allowed to tune construction deta…

PhysicsNuclear and High Energy PhysicsPhotomultiplierLarge Hadron ColliderPhysics::Instrumentation and Detectorsbusiness.industryDetectorReconstruction algorithmParticle identificationlaw.inventionLens (optics)OpticslawHigh Energy Physics::ExperimentPrismbusinessInstrumentationCherenkov radiationNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
researchProduct

Digital pulse-timing technique for the neutron detector array NEDA

2015

WOS: 000348040900011

PhysicsNuclear and High Energy PhysicsPhotomultiplierLiquid scintillatorPhysics::Instrumentation and Detectorsbusiness.industryNeutron detectorDetectorConstant fraction discriminatorNEDAZero crossingParticle detectorOpticsDigital timingSampling (signal processing)BC501AScintillation counterConstant fraction discriminatorNeutron detection[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]businessInstrumentationComputingMilieux_MISCELLANEOUSNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
researchProduct

Test of digital neutron-gamma discrimination with four different photomultiplier tubes for the NEutron Detector Array (NEDA)

2014

WOS: 000344994600012

PhysicsNuclear and High Energy PhysicsPhotomultiplierNeutron-gamma discriminationLiquid scintillatorCharge Comparisonbusiness.industrydigitalTime-of-flightDetectorIntegrated rise-timeComparisonScintillatorNEDAChargeTime of flightOpticsDigital neutron-gamma discriminationPhotomultiplier tubeNeutron detectionNeutron[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]businessInstrumentation
researchProduct

Recent results with lifetime enhanced microchannel-plate photomultipliers

2018

Abstract The favored photon sensors for the DIRC (detection of internally reflected Cherenkov light) detectors at the PANDA (Anti-proton Annihilation at Darmstadt) experiment at FAIR (Facility for anti-proton and ion research) are micro-channel-plate photomultipliers (MCP-PMTs). The main problem until a few years ago was the limited lifetime of the MCP-PMTs caused by a rapid decrease in quantum efficiency (QE) of the photo cathode (PC) with increasing integrated anode charge (IAC). These limitations are overcome by applying an atomic layer deposition (ALD) coating on the MCPs, as recently done by PHOTONIS and Hamamatsu. During the last years’ tests of lifetime enhanced MCP-PMTs were perform…

PhysicsNuclear and High Energy PhysicsPhotomultiplierPhoton010308 nuclear & particles physicsbusiness.industry01 natural sciencesCathode030218 nuclear medicine & medical imagingAnodelaw.invention03 medical and health sciencesAtomic layer deposition0302 clinical medicineOpticsDetection of internally reflected Cherenkov lightlaw0103 physical sciencesQuantum efficiencyMicrochannel plate detectorbusinessInstrumentationNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
researchProduct

Optical measurement of the longitudinal ion distribution of bunched ion beams in the ESR

2013

Abstract An optical technique to study the longitudinal distribution of ions in a bunched ion beam circulating in a storage ring is presented. It is based on the arrival-time analysis of photons emitted after collisional excitation of residual gas molecules. The beam-induced fluorescence was investigated in the ultraviolet regime with a channeltron and in the visible region using a photomultiplier tube. Both were applied to investigate the longitudinal shape of bunched and electron-cooled 209Bi80+ ion beams at about 400 MeV/u in the experimental storage ring (ESR) at GSI Helmholtzzentrum fur Schwerionenforschung in Darmstadt, Germany. Bunch lengths were determined with an uncertainty of abo…

PhysicsNuclear and High Energy PhysicsPhotomultiplierPhotonIon beamIonizationPhysics::Accelerator PhysicsAtomic physicsInstrumentationCollisional excitationBeam (structure)Storage ringIonNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
researchProduct