0000000000303863

AUTHOR

J. Schuler

showing 3 related works from this author

Optimization of the JUNO liquid scintillator composition using a Daya Bay antineutrino detector

2021

To maximize the light yield of the liquid scintillator (LS) for the Jiangmen Underground Neutrino Observatory (JUNO), a 20 t LS sample was produced in a pilot plant at Daya Bay. The optical properties of the new LS in various compositions were studied by replacing the gadolinium-loaded LS in one antineutrino detector. The concentrations of the fluor, PPO, and the wavelength shifter, bis-MSB, were increased in 12 steps from 0.5 g/L and <0.01 mg/L to 4 g/L and 13 mg/L, respectively. The numbers of total detected photoelectrons suggest that, with the optically purified solvent, the bis-MSB concentration does not need to be more than 4 mg/L. To bridge the one order of magnitude in the detect…

organic compounds: admixtureNuclear and High Energy PhysicsPhysics - Instrumentation and DetectorsLiquid scintillatorscintillation counter: liquidAnalytical chemistryFOS: Physical sciencesmodel: opticalScintillatorWavelength shifterantineutrino: detector01 natural sciencesNOHigh Energy Physics - Experimentwavelength shifterHigh Energy Physics - Experiment (hep-ex)PE2_2Daya BayNeutrino0103 physical sciencesfluorine: admixture[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]ddc:530neutrino oscillation[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]010306 general physicsInstrumentationJiangmen Underground Neutrino ObservatoryPhysicsJUNO010308 nuclear & particles physicsSettore FIS/01 - Fisica SperimentaleDetectorLight yield; Liquid scintillator; NeutrinoInstrumentation and Detectors (physics.ins-det)Yield (chemistry)Scintillation counterComposition (visual arts)photon: yieldNeutrinoLight yieldNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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2.45 GHz synchronised polarised electron injection at MAMI

1998

Abstract A semiconductor modelocked diode laser has been used to produce picosecond spin-polarised electron bunches from strained GaAsP photocathodes and inject them into MAMI, synchronised to the 2.45 GHz accelerating field. The laser meets the operational requirements of MAMI producing stable electron beams, with a polarisation purity of 72% and a transmission efficiency of 52% at an accelerated beam current of 10.1 μA.

PhysicsNuclear and High Energy Physicsbusiness.industryCyclotronSemiconductor deviceLaserCathodelaw.inventionSemiconductor laser theorySemiconductorOpticslawPicosecondOptoelectronicsbusinessInstrumentationDiodeNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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<title>Spin-polarized electron kinetics under high-intensity picosecond excitation</title>

2003

ABSTRACT Spin-polarized electron kinetics is studied by time-resolved polarized photoemission with picosecond resolution. The re-sponse time of strained layer photocathodes is found to be in a range of a few picosecond offering an ultrafast response andhigh spin-polarization of emitted electrons. The studies of the sub-picosecond spin dynamics are facilitated in high-intensityexcitation regime when the length of the emission pulse is enlarged due to the dispersion of acceleration time and Coulombrepulsion ofthe electrons in their flight in the vacuum.Keywords: optical orientation, spin kinetics, strained semiconductor layer, time-resolved emission. 1. INTRODUCTION GaAs, layers are known to …

OpticsBand bendingSemiconductorSpin polarizationElectron capturebusiness.industryChemistryPicosecondElectronbusinessMolecular physicsUltrashort pulseActive layerSPIE Proceedings
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