The use of liquid helium and neon as scintillators for neutrino detection is investigated. Several unique properties of these cryogens make them promising candidates for real-time solar neutrino spectroscopy: large ultraviolet scintillation yields from ionizing radiation, transparency to their own scintillation light, and low levels of radioactive impurities. When neutrinos scatter from electro...

There is a need for semiconductor-based ultraviolet photodetectors to support avalanche gain in order to realize better performance andmore effective compete with existing technologies. Wide bandgap III-Nitride semiconductors are the promising material system for the development of avalanche photodiodes (APDs) that could be a viable alternative to current bulky UV detectors such as photomultipl...

We discuss the design and performance of a threshold Cerenkov counter for identiication of charged hadrons. The radiator is pressurized gas, which is contained in thin-walled cylindrical modules. A mirror system of novel design transports Cerenkov photons to photomultiplier tubes. This system is compact, contains relatively little material, and has a large fraction of active volume. A prototype...

While there have been extensive advances in miniaturized polymerase chain reaction (PCR) systems, progress on integrated microfabricated readout mechanisms has been rather limited, and most systems rely on off-chip optical detection modules to measure the final product. Existing optical detection platforms typically include CCD cameras, photodiodes, and photomultiplier tubes. While such hardwar...

Department of Nuclear Engineering, Graduate School of Enginering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Japan ABSTRACT Radon (Rn) diffusion coefficient as one of some important parameters of Rn transport in the soil has been measured using soil radon diffusion monitor (SRDM). The system of SRDM consists of two scintillation detectors, sample container located between these detectors,...

Large area optical detection systems are required for applications including cell imaging, spectroscopy, nuclear medicine, bio diagnostics, radiation detection and high energy physics. Each of these applications requires that a detector or detector arrays be closely coupled with light sources or optical couplers such as fibres or light couplers. In this paper, the scaling of novel Silicon Photo...

A system and method for detecting a detectably labeled cell or componentthereof in a sample comprising one or more cells or components thereof, at least one cell or component thereof of which is detectably labeled with at least two detectable labels. In one embodiment, the method comprises: (i) introducing the sample into one or more flow cells of a flow cytometer, (ii) irradiating the sample w...

A semester research project was completed at Eidgenössiche Technische Hochschule Zürich (ETH Zürich) and the Paul Scherrer Institut (PSI) in the spring of 2010. A new kind of trigger based on silicon pixel sensors was developed for the commissioning of the current Compact Muon Solenoid (CMS) pixel detector. Prior to this trigger there was no silicon sensor based trigger that used the same techn...

The application of stainless steel tubes in concrete-filled tube systems can significantly improve their corrosion resistance comparison with those that employ carbon tubes. In this paper, a series push-out tests were carried out to investigate the bond stress-slip behavior between and concrete. A total 14 square specimens tested, covering two cross-sectional width-thickness ratios (B/t = 30 50...

Sound propagation i gas-filled capillary-tube-type orous media was investigated. The capillary tubes were taken to be nominally straight with very small pores in the walls of the capillary tubes. The complex wave number and the characteristic mpedance of such media were evaluated. Application to ceramic samples having capillary pores with square cross sections and porous walls is developed as a...