This article describes the ber optic based calibration system installed at the High Resolution Fly s Eye HiRes astro particle physics observatory The HiRes detec tors measure ultra violet scintillation light from distant extensive air showers This automated calibration system delivers light from a frequency tripled nm YAG laser to the photo multiplier tubes of the HiRes II detectors c El sevier...

This paper concerns the application of gamma radiation absorption method in measurements dispersed phase velocity two-phase flows: liquid–gas flow a horizontal pipeline and liquid–solid particles vertical pipe. Radiometric sets containing two linear 241Am sources NaI(Tl) scintillation detectors were used research. Due to stochastic nature signals obtained from probes, statistical methods for th...

Organic scintillators are widely used for fast neutron detection and spectroscopy. Several effects complicate the interpretation of results from detectors based upon these materials. First, fast neutrons will often leave a detector before depositing all of their energy within it. Second, fast neutrons will typically scatter several times within a detector, and there is a non-proportional relati...

Results of observations of low energy nuclear and electron recoil events in liquid xenon scintillator detectors are given. The relative scintillation efficiency for nuclear recoils is 0.22 ± 0.01 in the recoil energy range 40 keV 70 keV. Under the assumption of a single dominant decay component to the scintillation pulse-shape the log-normal mean parameter T0 of the maximum likelihood estimator...

This research attempts to improve upon modern gas-based tracking detectors by investigating gases unconventionally used as scintillating targets. Advancements in current technologies are vital for higher resolution track reconstruction in astroparticle physics experiments. A single-wire chamber was instrumented as a basic gas detector model and used to test CF4, N2, P-10, and C4H10. The light-t...

Inorganic scintillators are important elements of a new type of cryogenic phonon scintillation detector (CPSD) being developed for single particle detection. These detectors, exhibiting superior energy resolution and the ability to identify the type of interaction in an event, are considered to be the next generation of instrumentation in the search for extremely rare events. This paper present...

ArDM is a new-generation WIMP detector which will measure simultaneously light and charge from scintillation and ionization of liquid argon. Our goal is to construct, characterize and operate a 1 ton liquid argon underground detector. The project relies on the possibility to extract the electrons produced by ionization from the liquid into the gas phase of the detector, to amplify and read out ...

We present the most recent advances in photo-detector design employed in time of flight positron emission tomography (ToF-PET). PET is a molecular imaging modality that collects pairs of coincident (temporally correlated) annihilation photons emitted from the patient body. The annihilation photon detector typically comprises a scintillation crystal coupled to a fast photo-detector. ToF informat...