Download or read book Characterization of Nuclear Recoils in High Pressure Xenon Gas written by and published by . This book was released on 2015 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Xenon has recently been the medium of choice in several large scale detectors searching for WIMP dark matter and neutrinoless double beta decay. Though present-day large scale experiments use liquid xenon, the gas phase offers advantages favorable to both types of searches such as improved intrinsic energy resolution and fewer fluctuations in the partition of deposited energy between scintillation and ionization channels. We recently constructed a high pressure xenon gas TPC as a prototype for the NEXT (Neutrino Experiment with a Xenon TPC) neutrinoless double beta decay experiment and have demonstrated the feasibility of 0.5% FWHM energy resolution at the 136Xe double beta Q-value with 3-D tracking capabilities. We now present results from this prototype on the simultaneous observation of cintillation and ionization produced by nuclear recoils at approximately 14 bar pressure. The recoils were produced by neutrons of approximately 2-6 MeV emitted from a radioisotope plutonium-beryllium source, and primary scintillation (S1) and electroluminescent photons produced by ionization (S2) were observed. We discuss the potential of gaseous xenon to distinguish between electron and nuclear recoils through the ratio of these two signals S2/S1. From these results combined with the possibility of using columnar recombination to sense nuclear recoil directionality at high pressures we envision a dual-purpose, ton-scale gaseous xenon detector capable of a combined search for WIMP dark matter and neutrinoless double beta decay. This work has been performed within the context of the NEXT collaboration.

Download or read book High Pressure Xenon Detectors for Rare Physics Searches written by Joshua Edward Renner and published by . This book was released on 2014 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: High pressure xenon gas detectors have the potential to significantly contribute to searches for rare physics processes such as neutrinoless double beta (0[nu][beta][beta]) decay and interactions of dark matter with ordinary matter. We summarize the physics and implications of these two phenomena and discuss experimental developments conducted with an electroluminescent high pressure xenon time projection chamber (TPC). The detector was constructed as a prototype for the NEXT experiment - Neutrino Experiment with a Xenon TPC - and was intended to demonstrate an ability to detect electron recoils with an energy resolution sufficient for a strong neutrinoless double beta decay search. Using the low-gain ionization signal amplification process of electroluminescence, we are able to obtain an energy resolution of approximately 1% FWHM in the detection of 662 keV gamma rays. In addition, we demonstrate basic particle tracking capabilities using a silicon photomultiplier-based tracking plane, a technique also relevant to the NEXT approach in searching for 0[nu][beta][beta] decay. To investigate the possibility of a gaseous xenon dark matter detector, we also characterize the ionization and scintillation signals produced by nuclear recoils in the TPC and compare them to the corresponding signals produced by electron recoils. The nuclear recoils are produced using radioisotope neutron sources. Our measurements demonstrate the ability to discriminate between electron and nuclear recoils using the ratio of ionization to scintillation produced on an event-by-event basis and provide an estimate of the ionization and scintillation yields of nuclear recoils in gaseous xenon. We end with a discussion of the physical principles behind another approach to obtaining nearly-intrinsic energy resolution in a noble gas detector. This approach, called negative ion drift, consists of drifting negative ions produced by intentionally introducing impurities into a gaseous medium that capture ionization electrons. These negative ions are then counted individually by detaching and amplifying the electron they carry. We develop a basic formalism in an attempt to understand the ion drift and detachment processes that are critical to the implementation of this technique.

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1974-07 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1964 with total page 1528 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 2004 IEEE Nuclear Science Symposium Conference Record written by and published by . This book was released on 2004 with total page 758 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physics Briefs written by and published by . This book was released on 1991 with total page 1454 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1974 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dark Matter in Astro and Particle Physics written by Hans-Volker Klapdor-Kleingrothaus and published by Springer Science & Business Media. This book was released on 2006-02-23 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt: TheFifthHEIDELBERGInternationalConferenceonDarkMatterinAst- and Particle Physics, DARK 2004, took place at Texas A&M University, College Station Texas, USA, October 3–9, 2004. It was, after Cape Town 2002, the second conference of this series held outside Germany. The earlier meetings, starting in 1996, were held in Heidelberg. Dark Matter is still one of the most exciting and central ?elds of ast- physics, particle physics and cosmology. The conference covered, as usual for this series, a large range of topics, theoretical and experimental. Theoretical talks covered SUSY/SUGRA phenomenology, which provides at present a preferred theoretical framework for the existence of cold dark matter. Also included were other possible explanations of dark matter such as SUSY Q balls, exciting New Symmetries, etc. The most important experiments in the underground search for cold and hot dark matter were presented. Talks describing the current experimental dark matter bounds, what might be obtained in the near future, and the reach of future large (i.e. one ton) detectors were given. The potential of future colliders to correlate accelerator physics with dark matter searches was also outlined. Thus the reader will be able to see the present status and future prospects in the search for dark matter. The exciting astronomical evidence for dark matter and corresponding observations concerning the Milky Way’s black hole, high-redshift clusters, wakes in dark matter halos were other important topics at the conference.

Download or read book Emanation Thermal Analysis and Other Radiometric Emanation Methods written by V. Balek and published by . This book was released on 1984 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gaseous Radiation Detectors written by Fabio Sauli and published by Cambridge University Press. This book was released on 2023-01-31 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Open Access text describes the processes involved in gaseous radiation detection, ideal for nuclear and particle physics researchers.

Download or read book Time resolved Spectral Emission Studies of a Pulsed High Pressure Xenon Gas Discharge written by Manuel Figueroa and published by . This book was released on 1981 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook on Radiation Probing Gauging Imaging and Analysis written by E.M. Hussein and published by Springer Science & Business Media. This book was released on 2007-08-09 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need for this book arose from my teaching, engineering, and - search experience in the non-power aspects of nuclear technology. The lack of a comprehensive textbook in industrial applications of radiation frustrated my students, who had to resort to a multitude of textbooks and research publications to familiarize themselves with the fundam- tal and practical aspects of radiation technology. As an engineer, I had to acquire the design aspects of radiation devices by trial-and-error, and often by accidental reading of a precious publication. As a researcher and a supervisor of graduate students, I found that the needed literature was either hard to find, or too scattered and diverse. More than once, I discovered that what appeared to be an exciting new idea was an old concept that was tried a few decades earlier during the golden era of “Atom for Peace”. I am hoping, therefore, that this book will serve as a single comprehensive reference source in a growing field that I expect will continue to expand. This book is directed to both neophytes and experts, and is written to combine the old and the new, the basic and the advanced, the simple and the complex. It is anticipated that this book will be of help in - viving older concepts, improving and expanding existing techniques and promoting the development of new ones.

Download or read book Proceedings of the Conference on the Scientific Industrial Applications of Small Accelerators written by and published by . This book was released on 1976 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes author index.

Download or read book Proceedings of the Fourth Conference on the Scientific Industrial Applications of Small Accelerators North Texas State University October 27 29 1976 written by Jerome L. Duggan and published by . This book was released on 1976 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Mass Spectroscopy Literature for 1970 written by and published by . This book was released on 1972 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book SUSY2004 written by Kaoru Hagiwara and published by . This book was released on 2004 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: