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Development Of A High Resolution Liquid Xenon Imaging Chamber For Gamma Ray Astronomy
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722160401 Total Pages :32 pages Book Rating :4.1/5 (64 download)
Book Synopsis Development of a High Resolution Liquid Xenon Imaging Chamber for Gamma-Ray Astronomy by : National Aeronautics and Space Administration (NASA)
Download or read book Development of a High Resolution Liquid Xenon Imaging Chamber for Gamma-Ray Astronomy written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-02 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective was to develop the technology of liquid xenon (LXe) detectors for spectroscopy and imaging of gamma rays from astrophysical sources emitting in the low to medium energy regime. In particular, the technical challenges and the physical processes relevant to the realization of the LXe detector operated as a Time Projection Chamber (TPC) were addressed and studied. Experimental results were obtained on the following topics: (1) long distance drift of free electrons in LXe (purity); (2) scintillation light yield for electrons and alphas in LXe (triggering); and (3) ionization yield for electrons and gamma rays in LXe (energy resolution). The major results from the investigations are summarized. Aprile, Elena Unspecified Center NAGW-1370...
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722160531 Total Pages :32 pages Book Rating :4.1/5 (65 download)
Book Synopsis Development of a High Resolution Liquid Xenon Imaging Telescope for Medium Energy Gamma Ray Astrophysics by : National Aeronautics and Space Administration (NASA)
Download or read book Development of a High Resolution Liquid Xenon Imaging Telescope for Medium Energy Gamma Ray Astrophysics written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-20 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the third year of the research project, we have (1) tested a 3.5 liter prototype of the Liquid Xenon Time Projection Chamber, (2) used a prototype having a 4.4 cm drift gap to study the charge and energy resolution response of the 3.5 liter chamber, (3) obtained an energy resolution as good as that previously measured by us using chambers with drift gaps of the order of millimeters, (4) observed the induction signals produced by MeV gamma rays, (4) used the 20 hybrid charge sensitive preamplifiers for a nondestructive readout of the electron image on the induction wires, (5) performed extensive Monte Carlo simulations to obtain results on efficiency, background rejection capability, and source flux sensitivity, and (6) developed a reconstruction algorithm for events with multiple interaction points. Aprile, Elena Unspecified Center NAGW-2013...
Book Synopsis Development of Liquid Xenon Imaging Gamma-Ray Spectrophotometers by :
Download or read book Development of Liquid Xenon Imaging Gamma-Ray Spectrophotometers written by and published by . This book was released on 1990 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have investigated the application of liquid xenon in high resolution, low background and efficient gamma- ray detectors for the observation in space of weak sources emitting in the 0.1 - 10 MeV energy region. The basic requirement of ultra-high purity liquid xenon, necessary for the successful operation of these detectors has been satisfied with the development of an efficient and reliable purification system, capable of reducing and maintaining the concentration of electronegative impurities below one part in 109. The charge and energy resolution response of a liquid xenon (and liquid argon) ionization chamber has been systematically measured as a function of electric field strength, using various radioactive sources. Our results of 4.5% FWHM and 2.6% FWHM at 1 MeV in liquid xenon and liquid argon, respectively are the best reported in the literature. Their deviation from theoretical estimates based on Fano factor statistics has been interpreted as due to recombination straggling on low energy delta-electrons produced along the primary ionizing particle. The effect of photosensitive dopants in the liquid has also been measured. Improved charge collection and energy resolution is observed for the case of alpha particles. In view of its application for event triggering in an imaging ionization chamber, we have measured the yield of the primary scintillation light abundantly emitted in liquid Xenon, using both electrons and alpha particles. The dependence of the event will provide an ideal tool for background rejection.
Book Synopsis Technique And Application Of Xenon Detectors, Proceedings Of The International Workshop by : Yusuke Koshio
Download or read book Technique And Application Of Xenon Detectors, Proceedings Of The International Workshop written by Yusuke Koshio and published by World Scientific. This book was released on 2003-01-14 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents:The Basic Properties of Liquid Xenon as Related to Its Application in Radiation Detectors (W F Schmidt)Non-Proportionality of the Scintillation Yield in Liquid Xenon and Its Effect on the Energy Resolution for Gamma-Rays (T Doke)Development of Liquid Xenon Detectors for Medical Imaging (V Chepel)The DAMA Pure Liquid Xenon Experiment (R Bernabei)DRIFT: A Dark Matter Detector with Directional Sensitivity (B Morgan)Studies of Barium Ion Mobility in Liquid Xenon (M Miyajima)XENON: A 1-Tonne Liquid Xenon Experiment for a Sensitive Dark Matter Search (E Aprile)Progress on the Enriched Xenon Observatory Double-Beta Decay Experiment (S Waldman)and other papers Readership: Researchers in high energy physics. Keywords:Low Energy Solar Neutrinos;Dark Matter;Double Beta Decay;Liquid Xenon;Gamma-Ray Astronomy;Radiation Detectors
Book Synopsis Development of a High Resolution Liquid Xenon Detector for Gamma-ray Astrophysics by : Reshmi Mukherjee
Download or read book Development of a High Resolution Liquid Xenon Detector for Gamma-ray Astrophysics written by Reshmi Mukherjee and published by . This book was released on 1993 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Application of Two Phase (Liquid/Gas) Xenon Gamma-Camera for the Detection of Special Nuclear Material and PET Medical Imaging by :
Download or read book Application of Two Phase (Liquid/Gas) Xenon Gamma-Camera for the Detection of Special Nuclear Material and PET Medical Imaging written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The McKinsey group at Yale has been awarded a grant from DTRA for the building of a Liquid Xenon Gamma Ray Color Camera (LXe-GRCC), which combines state-of-the-art detection of LXe scintillation light and time projection chamber (TPC) charge readout. The DTRA application requires a movable detector and hence only a single phase (liquid) xenon detector can be considered in this case. We propose to extend the DTRA project to applications that allow a two phase (liquid/gas) xenon TPC. This entails additional (yet minimal) hardware and extension of the research effort funded by DTRA. The two phase detector will have better energy and angular resolution. Such detectors will be useful for PET medical imaging and detection of special nuclear material in stationary applications (e.g. port of entry). The expertise of the UConn group in gas phase TPCs will enhance the capabilities of the Yale group and the synergy between the two groups will be very beneficial for this research project as well as the education and research projects of the two universities. The LXe technology to be used in this project has matured rapidly over the past few years, developed for use in detectors for nuclear physics and astrophysics. This technology may now be applied in a straightforward way to the imaging of gamma rays. According to detailed Monte Carlo simulations recently performed at Yale University, energy resolution of 1% and angular resolution of 3 degrees may be obtained for 1.0 MeV gamma rays, using existing technology. With further research and development, energy resolution of 0.5% and angular resolution of 1.3 degrees will be possible at 1.0 MeV. Because liquid xenon is a high density, high Z material, it is highly efficient for scattering and capturing gamma rays. In addition, this technology scales elegantly to large detector areas, with several square meter apertures possible. The Yale research group is highly experienced in the development and use of noble liquid detectors for astrophysics, most recently in the XENON10 experiment. The existing facilities at Yale are fully adequate for the completion of this project. The facilities of the UConn group at the LNS at Avery Point include a (clean) lab for detector development and this group recently delivered an Optical Readout TPC (O-TPC) for research in Nuclear Astrophysics at the TUNL in Duke University. The machine shop at UConn will be used (free of charge) for producing the extra hardware needed for this project including grids and frames.
Book Synopsis Monthly Catalogue, United States Public Documents by :
Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1994 with total page 1592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NASA's University Program Active Projects by :
Download or read book NASA's University Program Active Projects written by and published by . This book was released on with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of a High Resolution Gamma Ray Imaging Module by :
Download or read book Development of a High Resolution Gamma Ray Imaging Module written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis EUV, X-ray, and Gamma-ray Instrumentation for Astronomy by :
Download or read book EUV, X-ray, and Gamma-ray Instrumentation for Astronomy written by and published by . This book was released on 1995 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Research on Particle Imaging Detectors by : Georges Charpak
Download or read book Research on Particle Imaging Detectors written by Georges Charpak and published by World Scientific. This book was released on 1995 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much instrumentation has been developed for imaging the trajectories of elementary particles produced in high energy collisions. Since 1968, gaseous detectors, beginning with multiwire chambers and drift chambers, have been used for the visualisation of particle trajectories and the imaging of X-rays, neutrons, hard gamma rays, beta rays and ultraviolet photons.This book commemorates the groundbreaking research leading to the evolution of such detectors carried out at CERN by Georges Charpak, Nobel Prizewinner for Physics in 1992. Besides collecting his key papers, the book also includes original linking commentary which sets his work in the context of other worldwide research.
Book Synopsis Development of High Resolution Imaging Detectors for X-ray Astronomy by : Stephen S. Murray
Download or read book Development of High Resolution Imaging Detectors for X-ray Astronomy written by Stephen S. Murray and published by . This book was released on 1985 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Research and Technology Objectives and Plans Summary (RTOPS) by :
Download or read book Research and Technology Objectives and Plans Summary (RTOPS) written by and published by . This book was released on 1985 with total page 192 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 1973 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781792084720 Total Pages :26 pages Book Rating :4.0/5 (847 download)
Book Synopsis Development of High Resolution Imaging Detectors for X Ray Astronomy by : National Aeronautics and Space Adm Nasa
Download or read book Development of High Resolution Imaging Detectors for X Ray Astronomy written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-12-29 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: This final report summarizes our past activities and discusses the work performed over the period of 1 April 1990 through 1 April 1991 on x-ray optics, soft x-ray (0.1 - 10 KeV) imaging detectors, and hard x-ray (10 - 300 KeV) imaging detectors. If microchannel plates (MCPs) can be used to focus x-rays with a high efficiency and good angular resolution, they will revolutionize the field of x-ray optics. An x-ray image of a point source through an array of square MCP pores compared favorably with our ray tracing model for the MCP. Initial analysis of this image demonstrates the feasibility of MCPs for soft x-rays. Our work continues with optimizing the performance of our soft x-ray MCP imaging detectors. This work involves readout technology that should provide improved MCP readout devices (thin film crossed grid, curved, and resistive sheets), defect removal in MCPs, and photocathode optimization. In the area of hard x-ray detector development we have developed two different techniques for producing a CsI photocathode thickness of 10 to 100 microns, such that it is thick enough to absorb the high energy x-rays and still allow the photoelectrons to escape to the top MCP of a modified soft x-ray imaging detector. The methods involve vacuum depositing a thick film of CsI on a strong back, and producing a converter device that takes the place of the photocathode. Murray, S. S. and Schwartz, D. A. NASA-CR-193653, NAS 1.26:193653 NAG5-605...
