We have carried out the dark matter search with a 116g direction-sensitive stilbene crystal in Kamioka Observatory. With the crystal fixed to the earth, we searched the modulation of the light output. No modulation signal was found due to the small size of the detector crystal and the higher background rate yet to be eliminated. However, it demonstrated the effectiveness of the method of direct...

  Introduction: Arrays of segmented scintillation crystals are useful in megavoltage x-ray imaging detectors for image-guided radiotherapy. Most previous theoretical studies on these detectors have modelled only ionizing-radiation transport. Scintillation light also affects detector performance. ScintSim1, our previously reported optical Monte Carlo code for such detector...

Detection of 5 events by the Liquid Scintillation Detector (LSD) on February, 23, 1987 was interpreted in the literature as the detection of neutrinos from the first stage of the two-stage supernova collapse. We pose rigid constraints on the properties of the first stage of the collapse, taking into account neutrino flavour conversion due to the MSW-effect and general properties of supernova ne...

Here, we report on the present state of development of a liquid xenon detector composed by multiwire ionisation chambers, which has been developed for positron emission tomography (PET). It uses the fast scintillation signal for coincidence and subsequent trigger of the event processing. The charge signals induced on the wires are used for position determination along the radial and transaxial ...

The Yale-Weizmann collaboration aims to develop a lowradioactivity (low-background) cryogenic noble liquid detector for Dark-Matter (DM) search in measurements to be performed deep underground as for example carried out by the XENON collaboration. A major issue is the background induced by natural radioactivity of present-detector components including the Photo Multiplier Tubes (PMT) made from ...

The Earth matter effects on supernova (SN) neutrinos can be identified at a single detector through peaks in the Fourier transform of their “inverse energy” spectrum. The positions of these peaks are independent of the SN models and therefore the peaks can be used as a robust signature of the Earth matter effects, which in turn can distinguish between different neutrino mixing scenarios. Wherea...

We report on the preparation of and calibration measurements with a $^{83\mathrm{m}}$Kr source for CENNS-10 liquid argon detector. atoms generated in decay $^{83}$Rb were introduced into detector via injection Ar circulation loop. Scintillation light arising from 9.4 keV 32.1 conversion electrons volume then observed. This allows characterization low-energy response is applicable to other low-e...

Various methods to determine 222Rn concentration in soil gas were tested at two sites with different soil types in a depth of 1 m. They include instantaneous (spot), continuous (real time) and timeaveraging procedures with advective ('active' procedures) or diffusive ('passive' procedures) gas transport from soil to detector: a) active grab-sampling of soil gas from different thin soil gas prob...

The MuLan experiment has been designed to make a precision measurement of the muon lifetime to one part per million. The experiment uses 340 scintillation detectors to detect the positron produced in the muon's decay. Members of the James Madison University Physics department have been responsible for the design and implementation of a calibration system for the MuLan detector. The calibration ...

A phoswich detector with two scintillation layers has been designed and assembled at Oregon State University. This detector is able to identify and reject Compton events and ultimately reduce the Compton continuum in gamma energy spectra. In this detector, CsI(Tl) crystal is used to primarily detect photoelectric events. The CsI(Tl) crystal is partially surrounded by a BGO crystal layer to capt...