27 research outputs found

    Scintillation light detection in the 6-m drift-length ProtoDUNE Dual Phase liquid argon TPC

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    DUNE is a dual-site experiment for long-baseline neutrino oscillation studies, neutrino astrophysics and nucleon decay searches. ProtoDUNE Dual Phase (DP) is a 6  ×  6  ×  6 m 3 liquid argon time-projection-chamber (LArTPC) that recorded cosmic-muon data at the CERN Neutrino Platform in 2019-2020 as a prototype of the DUNE Far Detector. Charged particles propagating through the LArTPC produce ionization and scintillation light. The scintillation light signal in these detectors can provide the trigger for non-beam events. In addition, it adds precise timing capabilities and improves the calorimetry measurements. In ProtoDUNE-DP, scintillation and electroluminescence light produced by cosmic muons in the LArTPC is collected by photomultiplier tubes placed up to 7 m away from the ionizing track. In this paper, the ProtoDUNE-DP photon detection system performance is evaluated with a particular focus on the different wavelength shifters, such as PEN and TPB, and the use of Xe-doped LAr, considering its future use in giant LArTPCs. The scintillation light production and propagation processes are analyzed and a comparison of simulation to data is performed, improving understanding of the liquid argon properties

    Linking Climate Change and Groundwater

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    State of the Climate in 2016

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    Effect of Dietary Inclusion of Combination of Inulin and Saponin on Egg Qualities of Laying Hens

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    Effect of supplementation of combination of two feed additives, inulin from Chicory root powder (Cichorium intybus L.) and saponin from Sapindaceae plant powder on egg qualities in laying hens of “BV300”strain was studied from 21-52 week of age (32 weeks period). Total 300 laying hens at 21 week of age were randomly assigned to three equal groups (A, B and C) of 100 hens each. Group A received control basal diet. Group B received basal diet with combination of 0.1g inulin and 0.005g of saponin /kg of feed Group C received basal diet with combination of 0.167 g inulin and 0.0083 g saponin/kg of feed. Egg quality parameters like Egg Weight (EW), Yolk Weight (YW), Albumen Weight (AW) and Shell Weight (SW), Shape Index (SI) and Shell Thickness (ST) were recorded at monthly interval from 21 to 52 week of age. Results of the study indicated that the EW, AW and SW were improved significantly (p less than 0.05) in group B compared to group C and group A without any adverse effect. However, there was no adverse effect of additives on these egg quality parameters at higher dose level in the diet.</jats:p
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