Search results for "Sciami estesi"

showing 3 items of 3 documents

Software Timing Calibration of the ARGO-YBJ Detector

2009

The ARGO-YBJ experiment is mainly devoted to search for astronomical gamma sources. The arrival direction of air showers is reconstructed thanks to the times measured by the pixels of the detector. Therefore, the timing calibration of the detector pixels is crucial in order to get the best angular resolution and pointing accuracy. Because of the large number of pixels a hardware timing calibration is practically impossible. Therefore an off-line software calibration has been adopted. Here, the details of the procedure and the results are presented. (C) 2008 Elsevier B.V. All rights reserved.

PhysicsPixelCalibration (statistics)business.industryPhysics::Instrumentation and DetectorsAstrophysics::High Energy Astrophysical PhenomenaDetectorSettore FIS/01 - Fisica SperimentaleComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONAstrophysics::Instrumentation and Methods for AstrophysicsAstronomy and AstrophysicsAstronomia gammaGamma Astronomy Timing Calibration Extensive Air ShowersSciami estesiCalibrazione temporaleOpticsSoftwareRaggi cosmiciSettore FIS/05 - Astronomia e AstrofisicaAngular resolutionbusinessArgoRemote sensing
researchProduct

The Status of the ARGO Experiment at YBJ

2007

The ARGO-YBJ experiment, located at Yangbajing, Tibet, China, performed by a wide Sino-Italian collaboration, is designed to study cosmic rays, sub-TeV gamma ray sources and GeV Gamma Ray Burst (GRB) emission in the northern hemisphere, by means of detecting small size EAS (Extensive Air Shower) using a full coverage RPC (Resistive Plate Chamber) carpet. The central carpet of the detector is installed and put into operation to date, with 1900 m^2 of the carpet already operating since December 2004. With a trigger multiplicity of ≥60 hits, corresponding to a primary mode energy of 2 TeV, the angular resolution of EAS measurements is < 1 degree for showers with more than 500 recorded hits. We…

PhysicsNuclear and High Energy PhysicsCosmic rays gamma ray sources Gamma Ray Burst Extensive Air Shower Resistive Plate ChamberARGO-YBJAstrophysics::High Energy Astrophysical PhenomenaDetectorNorthern HemisphereGamma rayAstrophysics::Instrumentation and Methods for AstrophysicsResistive plate chamberCosmic rayAstrophysicsAstronomia gammaAtomic and Molecular Physics and OpticsSciami estesiRaggi cosmiciAir showerGamma-ray burstArgo
researchProduct

Scaler mode technique for the ARGO-YBJ detector

2008

The ARGO-YBJ experiment has been designed to study the Extensive Air Showers with an energy threshold lower than that of the existing arrays by exploiting the high altitude location(4300 m a.s.l. in Tibet, P.R. China) and the full ground plane coverage. The lower energy limit of the detector (E $\sim$ 1 GeV) is reached by the scaler mode technique, i.e. recording the counting rate at fixed time intervals. At these energies, transient signals due to local (e.g. Forbush Decreases) and cosmological (e.g. Gamma Ray Bursts) phenomena are expected as a significant variation of the counting rate compared to the background. In this paper the performance of the ARGO-YBJ detector operating in scaler …

Gamma ray burstAstrophysics::High Energy Astrophysical PhenomenaCamere a piani resistiviFOS: Physical sciencesCosmic rayAstrophysicsRivelatori di sciami estesi01 natural sciencesRaggi cosmiciOpticsSettore FIS/05 - Astronomia e Astrofisica0103 physical sciencesLimit (music)010303 astronomy & astrophysicsArgoGround planegamma ray bursts cosmic rays extended air showersPhysics010308 nuclear & particles physicsbusiness.industrySettore FIS/01 - Fisica SperimentaleAstrophysics (astro-ph)DetectorMode (statistics)Astronomy and AstrophysicsSciami estesibusinessGamma-ray burstEnergy (signal processing)
researchProduct