Download or read book Dilation X ray Imager a New faster Gated X ray Imager for the NIF DIXI Dilation X ray Imager a New faster Gated X ray Imager for the NIF written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: As the yield on implosion shots increases it is expected that the peak x-ray emission reduces to a duration with a FWHM as short as 20 ps for 7̃ 1018 neutron yield. However, the temporal resolution of currently used gated x-ray imagers on the NIF is 40-100 ps. We discuss the benefits of the higher temporal resolution for the NIF and present performance measurements for DIXI, which utilizes pulse-dilation technology [1] to achieve x-ray imaging with temporal gate times below 10 ps. Lastly, the measurements were conducted using the COMET laser, which is part of the Jupiter Laser Facility at the Lawrence Livermore National Laboratory.

Download or read book Design and Implementation of Dilation X ray Imager for NIF DIXI written by and published by . This book was released on 2013 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Implementation of Dilation X ray Imager for National Ignition Facility DIXI written by and published by . This book was released on 2013 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Time resolved Soft X Ray Imaging SXRI Diagnostic for Use at the NIF and OMEGA Lasers written by G. Power and published by . This book was released on 2006 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: The soft x-ray imager (SXRI) built for the first experiments at the National Ignition Facility (NIF) has four soft x-ray channels and one hard x-ray channel. The SXRI is a snout that mounts to a four strip gated imager. This produces four soft x-ray images per strip, which can be separated in time by {approx}60psec. Each soft x-ray channel consists of a mirror plus a filter. The diagnostic was used to study x-ray burnthrough of hot hohlraum targets at the NIF and OMEGA lasers. The SXRI snout design and issues involved in selecting the desired soft x-ray channels are discussed.

Download or read book Ignition X Ray Imager for Laser Fusion Research at the National Ignition Facility written by T. W. Phillips and published by . This book was released on 2005 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: X-ray imaging will be an important diagnostic tool for inertial confinement fusion (ICF) research at the National Ignition Facility (NIF). However, high neutron yields will make x-ray imaging much more difficult than it is at current smaller facilities. We analyze the feasibility and performance of an Ignition X-Ray Imager to be used on cryogenic DT implosions at NIF. The system is intended to provide time-integrated, broadband, moderate-energy x-ray core images of imploding ICF capsules. Highly magnified, spectrally-filtered images created using an array of pinholes placed close to the target will be projected onto a scintillator placed at the target chamber wall. A telescope will be used to relay the scintillator emission to a distant optical detector that is time-gated in order to minimize backgrounds, in particular from neutrons. The system is optimized with respect to spatial-resolution, signal-to-background and signal-to-noise ratios.

Download or read book High Energy X Ray Imager for Laser Fusion Research at the National Ignition Facility written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: X-ray imaging will be an important diagnostic tool for inertial confinement fusion (ICF) research at the National Ignition Facility (NIF). However, high neutron yields will make x-ray imaging much more difficult than it is at smaller facilities. We analyze the feasibility and performance of a High-Energy X-Ray Imager (HEXRI) to be used on cryogenic DT implosions at NIF, with particular emphasis on spatial-resolution, field of view, signal-to-background and signal-to-noise ratios. Using a pinhole about 4 [mu]m in diameter a resolution of 5.8 [mu]m is achieved at 9 keV, limited by restrictions in the pinhole positioning. The resolution varies between 8.5 and 4.5 [mu]m in the 5-20 keV spectral range. Different options for the scintillating materials have been evaluated with the goal of having a sufficiently fast phosphor screen to allow time gating for minimizing neutron-induced background. Signal/Background (SBR) and Signal/Noise (SNR) ratios (limited to x-rays) have been calculated for different commercially-available scintillators, both showing adequate values with either a tantalum or a platinum pinhole substrate.

Download or read book A New Gated X Ray Detector for the Orion Laser Facility written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Gated X-Ray Detectors (GXD) are considered the work-horse target diagnostic of the laser based inertial confinement fusion (ICF) program. Recently, Los Alamos National Laboratory (LANL) has constructed three new GXDs for the Orion laser facility at the Atomic Weapons Establishment (AWE) in the United Kingdom. What sets these three new instruments apart from the what has previously been constructed for the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory (LLNL) is: improvements in detector head microwave transmission lines, solid state embedded hard drive and updated control software, and lighter air box design and other incremental mechanical improvements. In this paper we will present the latest GXD design enhancements and sample calibration data taken on the Trident laser facility at Los Alamos National Laboratory using the newly constructed instruments.

Download or read book The Gated X ray Detector for the National Ignition Facility written by and published by . This book was released on 2006 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two new gated x-ray imaging cameras have recently been designed, constructed and delivered to the National Ignition Facility in Livermore, CA. These Gated X-ray Detectors are each designed to fit within an aluminum airbox with a large capacity cooling plane and are fitted with an array of environmental housekeeping sensors. These instruments are significant different from earlier generations of gated x-ray images due in parts to an innovative impendence matching scheme, advanced phosphor screens, pulsed phosphor circuits, precision assembly fixturing, unique system monitoring and complete remote computer control. Preliminary characterization has shown repeatable uniformity between imaging strips, improved spatial resolution and no detectable impendence reflections.

Download or read book An Electronic High resolution X ray Imaging System written by J. W. Allen and published by . This book was released on 1959 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Symposium European Society for the History of Photography Proceedings and papers European Society for the History of Photography written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Dedicated Endstation for Waveguide based X ray Imaging written by Sebastian Kalbfleisch and published by Universitätsverlag Göttingen. This book was released on 2013 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of a Microchannel Plate Based Gated X ray Imager for Imaging and Spectroscopy Experiments on Z written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This poster describes a microchannelplate (MCP)-based, gated x-ray imager developed by National Security Technologies, LLC (NSTec), and Sandia National Laboratories(SNL) over the past several years. The camera consists of a 40 mm × 40 mm MCP, coated with eight 4 mm wide microstrips. The camera is gated by sending subnanosecond high-voltage pulses across the striplines. We have performed an extensive characterization of the camera, the results of which we present here. The camera has an optical gate profile width (time resolution) as narrow as 150 ps and detector uniformity of better than 30% along the length of a strip, far superior than what was achieved in previous designs. The spatial resolution is on the order of 40 microns for imaging applications and a dynamic range of between 1̃00 and 1̃000. We also present results from a Monte Carlo simulation code developed by NSTec over the last several years. Agreement between the simulation results and the experimental measurements is very good.

Download or read book Advanced X Ray Radiation Detection written by Krzysztof (Kris) Iniewski and published by Springer Nature. This book was released on 2022-07-04 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers readers an overview of some of the most recent advances in the field of technology for X-ray medical imaging. Coverage includes both technology and applications in SPECT, PET and CT, with an in-depth review of the research topics from leading specialists in the field. Coverage includes conversion of the X-ray signal into analogue/digital value, as well as a review of CMOS chips for X-ray image sensors. Emphasis is on high-Z materials like CdTe, CZT and GaAs, since they offer the best implementation possibilities for direct conversion X-ray detectors. The discussion includes material challenges, detector operation physics and technology and readout integrated circuits required to detect signals processes by high-Z sensors. Authors contrast these emerging technologies with more established ones based on scintillator materials. This book is an excellent reference for people already working in the field as well as for people wishing to enter it.

Download or read book Modern Diagnostic X Ray Sources written by Rolf Behling and published by CRC Press. This book was released on 2015-06-26 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern Diagnostic X-ray Sources: Technology, Manufacturing, Reliability gives an up-to-date summary of X-ray source design for applications in modern diagnostic medical imaging. It lays a sound groundwork for education and advanced training in the physics of X-ray production and X-ray interactions with matter. The book begins with a historical over

Download or read book Advanced Gated X Ray Imagers for Experiments at the National Ignition Facility written by and published by . This book was released on 2011 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Alignment of an X Ray Imager Line of Sight in the National Ignition Facility NIF Target Chamber Using a Diagnostic Instrument Manipulator DIM and Opposed Port Alignment System OPAS written by and published by . This book was released on 2012 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Principles of Fluoroscopic Image Intensification and Television Systems written by Robert J. Parelli and published by CRC Press. This book was released on 1996-11-21 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique workbook can be used as a stand-alone text or supplemental text for any course designed to enhance the work of radiologic technology students. It will also serve the needs of graduate radiographers as well as the physician in learning specific areas of the Fluoroscopic Image Intensifier such as: