نتایج جستجو برای: liquid scintillation detector
تعداد نتایج: 275743 فیلتر نتایج به سال:
Recently a large volume liquid scintillation detector for Low Energy Neutrino Astronomy (LENA) has been proposed. With this experiment it will be possible to measure terrestrial antineutrinos originating from decays of the uranium and thorium chains to a very high precision. Moreover it can be shown that LENA opens up the possibility to measure the angular dependence of the geoneutrino rate wit...
Detection of 5 events by the Liquid Scintillation Detector (LSD) on February, 23, 1987 was recently interpreted as a detection of the electron neutrino flux from the first stage of the two-stage Supernova collapse [1][2]. We show that, if neutrino mass hierarchy is normal, such interpretation excludes values of neutrino mixing angle θ13 larger than 3 · 10 , independently of the particular Super...
The long-standing solar neutrino deecit and the anomaly in the ratio of electron to muon neutrinos, found for neutrinos generated in the atmosphere, are intriguing hints at the existence of nite neutrino masses and avor mixing. Our collaboration is preparing a low energy long baseline-oscillation experiment, to test the latter phenomenon. A 12 ton segmented, Gd loaded liquid scintillation detec...
A technique to measure low intensity fast neutron flux has been developed. The design, calibrations, procedure for data analysis and interpretation of the results are discussed in detail. The technique has been applied to measure the neutron background from rock at the Boulby Underground Laboratory, a site used for dark matter and other experiments, requiring shielding from cosmic ray muons. Th...
A large-scale low-background liquid scintillation detector: the counting test facility at Gran Sasso
A 4.8 m3 unsegmented liquid scintillation detector at the underground Laboratori Nazionali de1 Gran Sasso has shown the feasibility of multi-ton low-background detectors operating to energies as low as 250 keV. Detector construction and the handling of large volumes of liquid scintillator to minimize the background are described. The scintillator, 1.5 g PPO/L-pseudocumene. is held in a flexible...
Abstract Liquid xenon based detectors have achieved great sensitivities in rare event searches. Precise knowledge of the scintillation and ionization responses medium is essential to correctly model different interaction types detector including both signal background-like ones. The response liquid low energy electrons alpha particles has been studied Heidelberg Xenon (HeXe) dual-phase TPC. We ...
We describe the design, construction and performance of the upgraded DØ muon system for Run II of the Fermilab Tevatron collider. Significant improvements have been made to the major subsystems of the DØ muon detector: trigger scintillation counters, tracking detectors, and electronics. The Run II central muon detector has a new scintillation counter system inside the iron toroid and an improve...
Compton suppression system was established to accurately and precisely measure low-level radiation during insitu measurement of sites. HPGe detector was selected as the main detector and plastics scintillation detector was selected as the guard detector. Using Cs source, while changing the height(h) and width(w) about plastic scintillation detector the gamma spectrum was simulated using the Mon...
The widespread use of H and 14C in research has generated a large volume of waste mixed with scintillation liquid, requiring an effective control and appropriate storage of liquid radioactive waste. In the present study, we compared the efficacy of three commercially available scintillation liquids, Optiphase HiSafe 3, Ultima-Gold AB (biodegradable) and Insta-Gel-XF (non-biodegradable), in term...
Abstract The 3×1×1 m 3 demonstrator is a dual phase liquid argon time projection chamber that has recorded cosmic rays events in 2017 at CERN. light signal these detectors crucial to provide precise timing capabilities. performance of the photon detection system, composed five PMTs, are discussed. collected scintillation and electroluminescence created by passing particles been studied various ...
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