The gas proportional scintillation counter/microstrip gas chamber (GPSC/MSGC) hybrid detector for X-ray spectrometry is described. The detector uses a CsI-coated microstrip plate placed in direct contact with the gas-filling as the photosensor readout for the GPSC scintillation substituting for the photomultiplier tube (PMT). Usable photosensor maximum gain is limited by optical positive feedba...

For the ever-challenging dark matter direct detection, we have been developing an optimized detector for more than a decade. The ZEPLIN II detector with liquid Xe as a target material is now under construction at the University of California, Los Angeles, which will be installed in the 1100-m deep U.K. Boulby salt mine in early 2002. A two-phase (liquid and gas) Xe scheme has been shown to be v...

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...

Abstract Radon is the main background source of dark matter and neutrino experiments. concentration (mBq/m 3 ) measurement by liquid scintillation detector a highly sensitive method at low temperatures using silicon photomultipliers (SiPMs) arrays. The SiPM performance characteristics are closely related to lower detection limit detector. In this study, we built an automatic accurate low-temper...

The x-ray scattering from liquid copper, silver, tin, and mercury was measured at temperatures of 1125 °C, 1050 °C, 335 °C, and 28 °C, respectively, from the open surface of horizontal samples using a focusing theta-theta diffractometer, quartz crystal monochromator positioned in the dif­ fracted beam, scintillation detector, and pulse height discriminator. The effect on the measured intensitie...

Wastes containing radioactive and organic compounds (mixed wastes) are difficult to dispose because of the regulations established for nuclear and hazardous wastes. Mixed wastes originate mainly in the emulsions generated in beta emitter determinations by Liquid Scintillation techniques. The use of plastic scintillators instead of liquid cocktails may facilitate the segregation, after measureme...