Berkeley Lab

Positron Annihilation Coincidence Scanning System for Characterization of Germanium Detectors

PI: Kai Vetter Staff: Quinn Looker, Micah Folsom Understanding pulse shapes in new detector types is critical in calibration and understanding detector response.  Particularly, P-type Point Contact (PPC) detectors show great potential in pulse shape analysis to distinguish single-site and multi-site interactions, yet many effects contribute to the overall pulse shape.  A detailed understanding can […]

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Optimization of Fabrication Process Parameters for High-Purity Germanium Detectors

PI: Kai Vetter Staff: Quinn Looker, Mark Amman High-Purity Germanium Detectors represent the gold standard in energy resolution due to superior charge transport properties and refined crystal growth procedures.  Room for progress yet remains in improving the electrical contacts as doped contacts may be excessively thick, as with a Li-diffused contact, giving a large dead […]

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Machine Vision Radiation Detection

The aim of the Machine Vision Radiation Detection System (MVRDS) project is to accurately and reliably detect the presence of a nearby, unknown radioactive source and to locate its position for the time that it is present within the range of detection. The main components of the system include NaI detectors to measure local radiation […]

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Low Noise Germanium for Coherent Neutrino-Nucleus Scattering (CNNS)

One interesting use of germanium detectors is in the study of coherent neutrino scattering. The way existing neutrino detectors work is that they wait for a neutrino to collide with a nucleon, destroying the neutrino and transferring all of its energy into the target material. This process (called inverse beta decay) makes for a bright […]

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Gamma-Ray Imaging Framework (GRIF)

[DRAFT] GRIF Resources GRIF site on GitHub GRIF Wiki GRIF Online Documentation Publications A. Benson, M. S. Bandstra, D. H. Chivers, T. Aucott, B. Augarten, C. Bates, A. Midvidy, R. Pavlovsky, J. Siegrist, K. Vetter. The Gamma-Ray Imaging Framework. Proceedings of the 2012 IEEE Symposium on Radiation Measurements and Applications (SORMA), 2012. [in preparation] Acknowledgements […]

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Electron Track Benchmarking Experiment

Recently the impact of gamma-ray imaging for nuclear security applications has been recognized, where the goal is to provide improved capabilities to detect, localize, and characterize nuclear materials. We report on our evaluation of the possible gains in detection sensitivity with an electron tracking-based Compton imaging system. The goal of this research is the systematic […]

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Compact Compton Imager (CCI 2)

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