We present new measurements on a Cryogenic Dark Matter Search (CDMS) detector with electron, neutron, and gamma sources. The measurements have been performed to investigate the dead layer of one of the CDMS Z-dependent Ionization Phonon germanium detectors. The dead layer has been studied at both charge electrodes and at different electric field intensities. We also present a method to remove t...

A laboratory has been constructed by the TEXONO Collaboration at the Kuo-Sheng Reactor Power Plant in Taiwan to study low energy neutrino physics. The facilities of the laboratory are described. A limit on the neutrino magnetic moment of μν̄e < 1.3× 10 −10 μB at 90% confidence level has been achieved from measurements with a high-purity germanium detector. Other physics topics, as well as the va...

Abbreviations 2D, 3D 2-dimensional, 3-dimensional CZT cadmium zinc telluride EKG electric signal from the heart FBP filtered backprojection FOV field-of-view GE General Electric Ge(Li) germanium detector doped with lithium MLEM maximum likelihood expectation maximization NaI(Tl) sodium iodine doped with thallium NM nuclear medicine OSEM ordered subset expectation maximization PET positron emiss...

The radiation survey of the ambient environment was conducted using two gamma detectors and the measurement results were used in the computation of the mean external radiation dose rate, mean weighted dose rate, annual effective dose and the collective effective dose, which are 69 nGy h, 0.447 mSv y, 237 μSv and 0.126 × 10 man Sv y, respectively. A hyper purity germanium (HPGe) detector was use...

Historically, gamma-ray spectroscopy has transitioned from using scintillator detectors with high efficiency but relatively low energy resolution to germanium detectors with high intrinsic energy resolution but much lower intrinsic efficiency. Next-generation scintillator materials such as lanthanum bromide, cerium bromide have become available over the last decade offering significantly improv...

Measurements with a bare p-type high purity germanium diode (HPGe) submerged in a 19 kg liquid argon (LAr) scintillation detector at MPIK-Heidelberg are reported. The liquid argon–germanium system (LArGe) is operated as a 4π anti-Compton spectrometer to suppress backgrounds in the HPGe. This R&D is carried out in the framework of the Gerda experiment which searches for 0νββ decays with HPGe det...

We have developed a low noise, low power charge sensitive ampli er and pulse shaping circuit. Our application is for a double-sided germanium strip detector, nominally providing 50 independent spectroscopy channels. An array of these detectors would provide signi cant improvements in imaging, spectroscopy, and sensitivity for space-based gamma-ray astronomy. The key features of these electronic...

The dissolution of the Soviet Union coupled with the growing sophistication of international terror organizations has brought about a desire to ensure that a sound infrastructure exists to interdict smuggled nuclear material prior to it leaving its country of origin. To combat the threat of nuclear trafficking, radiation portal monitors (RPMs) are deployed around the world to intercept illicit ...

Production of Co and Ge from stable isotopes of Germanium by nuclear active component of cosmic rays is a principal background source for a new generation of Ge double beta decay experiments like GERDA and Majorana. The biggest amount of cosmogenic activity is expected to be produced during transportation of either enriched material or already grown crystal. In this letter properties and feasib...