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Small Angle Physics at CDF: A Progress Report

Description: In 1989 CDF collected data in special high beta runs with a trigger selecting elastic and inelastic events in order to measure the total cross section ({sigma}{sub tot}) and the differential elastic cross section (d{sigma}{sub el}/dt). Data were taken at cms energies of 300, 540, 1000 and 1800 GeV. A double arm magnetic spectrometer located along the beam pipe tags the particles scattered at very small angles and tracking detectors surrounding the interaction point reveal particles produced at … more
Date: December 16, 1989
Creator: Paoletti, Riccardo
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A Summary of Recent Experimental Research on Ion Energy and Charge States of Pulsed Vacuum Arcs

Description: The paper reviews the results of vacuum arc experimental investigations made collaboratively by research groups from Berkeley and Tomsk over the last two years, i.e. since the last ISDEIV in 2006. Vacuum arc plasma of various metals was produced in pulses of a few hundred microseconds duration, and the research focussed on three topics: (i) the energy distribution functions for different ion charge states, (ii) the temporal development of the ion charge state distribution, and (iii) the evoluti… more
Date: June 16, 2008
Creator: Oks, Efim M.; Yushkov, Georgy Yu. & Anders, Andre
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Hyper-filter-fluorescer spectrometer for fusion x-ray diagnostics

Description: The filter-fluorescer spectrometer (FFS) is a powerful tool for measuring x-ray spectrum from high fluence x-ray sources. However, this technique is limited to energies less than 120 keV, because there are no practical absorption edges available above this energy. In this paper, we present a new method of utilizing the filter-fluorescer system for x-ray spectral measurement above 120 keV. The new apparatus is called hyper-filter-fluorescer spectrometer (HFFS).
Date: June 16, 1981
Creator: Wang, C. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Deep inelastic muon scattering at 500 and 100 GeV

Description: A description of experiment E665 at Fermilab is given. Data were taken at muon energies of 500 and 100 GeV and with targets of H/sub 2/, D/sub 2/, and Xe. Initial analysis of the first run's data has commenced. Physics topics addressed by the experiment are given. 1 ref., 1 fig., 1 tab.
Date: August 16, 1988
Creator: Wolbers, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Luminescence Beam Profile Monitor for the RHIC Polarized Hydrogen Jet Polarimeter.

Description: A new polarized hydrogen jet target was used to provide improved beam polarization measurements during the second polarized proton m in the Relativistic Heavy Ion Collider (RHIC). The luminescence produced by beam-hydrogen excitations was also used to test the feasibility of a new beam profile monitor for RFPIC based on the detection of the emitted light. Lenses, a view-port and a sensitive CCD camera were added to the system to record the optical signals from the interaction chamber. The first… more
Date: May 16, 2005
Creator: Luciano, N.; Nass, A.; Makdisi, Y.; Thieberger, P.; Trbojevic, D. & Zelenski, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The Astro-E2 XRS/EBIT Microcalorimeter XC-ray Spectrometer

Description: The X-ray Spectrometer (XRS) instrument is a revolutionary non-dispersive spectrometer that will form the basis for the Astro-E2 observatory to be launched in 2005. We have recently installed a flight spare XRS microcalorimeter spectrometer at the EBIT-I and SuperEBIT facility at LLNL replacing the XRS from the earlier Astro-E mission and providing twice the resolving power. The XRS microcalorimeter is an x-ray detector that senses the heat deposited by the incident photon. It achieves a high e… more
Date: April 16, 2004
Creator: Porter, F S; Brown, G V; Boyce, K R; Kelley, R L; Kilbourne, C A; Beiersdorfer, P et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Multinozzle Emitter Arrays for Nanoelectrospray Mass Spectrometry

Description: Mass spectrometry (MS) is the enabling technology for proteomics and metabolomics. However, dramatic improvements in both sensitivity and throughput are still required to achieve routine MS-based single cell proteomics and metabolomics. Here, we report the silicon-based monolithic multinozzle emitter array (MEA), and demonstrate its proof-of-principle applications in high-sensitivity and high-throughput nanoelectrospray mass spectrometry. Our MEA consists of 96 identical 10-nozzle emitters in a… more
Date: June 16, 2011
Creator: Mao, Pan; Wang, Hung-Ta; Yang, Peidong & Wang, Daojing
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Miniaturized Mid-Infrared Sensor Technologies

Description: Fundamental vibrational and rotational modes associated with most inorganic and organic molecules are spectroscopically accessible within the mid-infrared (MIR; 3-20 {micro}m) regime of the electromagnetic spectrum. The interaction between MIR photons and organic molecules provides particularly sharp transitions, which - despite the wide variety of organic molecules - provide unique MIR absorption spectra reflecting the molecularly characteristic arrangement of chemical bonds within the probed … more
Date: August 16, 2007
Creator: Kim, S.; Young, C. & Mizaikoff, B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Broadband Infrared Heterodyne Spectrometer: Final Report

Description: This report summarizes the most important results of our effort to develop a new class of infrared spectrometers based on a novel broadband heterodyne design. Our results indicate that this approach could lead to a near-room temperature operation with performance limited only by quantum noise carried by the incoming signal. Using a model quantum-well infrared photodetector (QWIP), we demonstrated key performance features of our approach. For example, we directly measured the beat frequency sign… more
Date: December 16, 2010
Creator: Stevens, C G; Cunningham, C T & Tringe, J W
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Molecular Aspects of Transport in Thin Films of Controlled Architecture

Description: Our laboratory focuses on developing spatially localized chemistries which can produce structures of controlled architecture on the supermolecular length scale -- structures which allow us to control the motion of molecular species with high spatial resolution, ultimately on nanometer length scales. Specifically, nanocapillary array membranes (NCAMs) contain an array of nanometer diameter pores connecting vertically separated microfluidic channels. NCAMs can manipulate samples with sub-femtolit… more
Date: April 16, 2009
Creator: Bohn, Paul W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Prototype Neutron Energy Spectrometer

Description: The project goals are: (1) Use three to five pressurized helium tubes with varying polyethylene moderators to build a neutron energy spectrometer that is most sensitive to the incident neutron energy of interest. Neutron energies that are of particular interest are those from the fission neutrons (typically around 1-2 MeV); (2) Neutron Source Identification - Use the neutron energy 'selectivity' property as a tool to discriminate against other competing processes by which neutrons are generated… more
Date: June 16, 2010
Creator: Stephen Mitchell, Sanjoy Mukhopadhyay, Richard Maurer, Ronald Wolff
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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High Pressure XENON Gamma-Ray Spectrometers for Field Use

Description: This project explored a new concept for high-pressure xenon ionization chambers by replacing the Frisch grid with coplanar grid electrodes similar to those used in wide bandgap semiconductor gamma-ray spectrometers. This work is the first attempt to apply the coplanar grid anode design in a gas ionization chamber in order to achieve to improved energy resolution. Three prototype detectors, two cylindrical and one parallel plate configurations, were built and tested. While the detectors did not … more
Date: February 16, 2004
Creator: Wehe, David K.; He, Zong & Knoll, Glenn K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Low-Charge State AMS for High Throughput 14C Quantification

Description: Accelerator mass spectrometry (AMS) quantifies attomole (10{sup -18}) amounts of {sup 14}C in milligram sized samples. This sensitivity is used to trace nutrients, toxins and therapeutics in humans and animals at less than {micro}g/kg doses containing 1-100 nCi of {sup 14}C. Widespread use of AMS in pharmaceutical development and biochemical science has been hampered by the size and expense of the typical spectrometer that has been developed for high precision radiocarbon dating. The precision … more
Date: June 16, 2000
Creator: Ognibene, T. J.; Roberts, M. L.; Southon, J. R. & Vogel, J. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Fabrication, Testing and Modeling of the MICE Superconducting Spectrometer Solenoids

Description: The Muon Ionization Cooling Experiment (MICE), an international collaboration sited at Rutherford Appleton Laboratory in the UK, will demonstrate ionization cooling in a section of realistic cooling channel using a muon beam. A five-coil superconducting spectrometer solenoid magnet will provide a 4 tesla uniform field region at each end of the cooling channel. Scintillating fiber trackers within the 400 mm diameter magnet bore tubes measure the emittance of the beam as it enters and exits the c… more
Date: May 16, 2010
Creator: Virostek, S. P.; Green, M. A.; Trillaud, F. & Zisman, M. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Associated Particle Tagging (APT) in Magnetic Spectrometers

Description: Summary In Brief The Associated Particle Tagging (APT) project, a collaboration of Pacific Northwest National Laboratory (PNNL), Idaho National Laboratory (INL) and the Idaho State University (ISU)/Idaho Accelerator Center (IAC), has completed an exploratory study to assess the role of magnetic spectrometers as the linchpin technology in next-generation tagged-neutron and tagged-photon active interrogation (AI). The computational study considered two principle concepts: (1) the application of a… more
Date: October 16, 2012
Creator: Jordan, David V.; Baciak, James E.; Stave, Sean C.; Chichester, David; Dale, Daniel; Kim, Yujong et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Single Cell Proteomics with Ultra-High Sensitivity Mass Spectrometry

Description: This project was a joint LDRD project between PAT, CMS and NAI with the objective to develop an instrument that analyzes the biochemical composition of single cells in real-time using bioaerosol mass spectrometry (BAMS) combined with advanced laser desorption and ionization techniques. Applications include both biological defense, fundamental cell biology and biomedical research. BAMS analyzes the biochemical composition of single, micrometer-sized particles (such as bacterial cells or spores) … more
Date: February 16, 2005
Creator: Frank, M
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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DELPHI: An introduction to output layout and data content

Description: DELPHI was the data summary and interpretation code used by gas diagnostics personnel during the period from 1968 through 1986. It was written by Floyd Momyer, and went through several revisions during its period of use. Described here is the final version, which provided the most extensive set of summary tables. Earlier versions of the code lacked some of the capabilities of the final version, but what they did include was of substantially the same format. DELPHI was run against most available… more
Date: August 16, 1994
Creator: Smith, C. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Glow Discharge Mass Spectrometry Analysis of LX-17 and PBX-9502 High Explosive Samples

Description: As part of the Campaign 4 effort in A Division we have done an analysis of several high explosives that are used in the current nuclear stockpile. In particular we have looked at samples of LX-17 and PBX-9502. The analysis was done using the glow discharge mass spectrometer that is currently located in B132N and operated by Mark Lane of the Chemistry and Material Science (CMS) Directorate. George Overturf from CMS obtained small samples of high explosive for the measurements. From the analysis … more
Date: December 16, 2002
Creator: Nilsen, J; Castor, J I; Lane, M A & Overturf, G E
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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X-ray Spectroscopy with Elliptical Crystals and Face-On Framing Cameras

Description: X-ray spectrometers using elliptically bent crystals have desirable properties for applications requiring broad spectral coverage, good spectral resolution, and minimized source broadening. Previous work used custom-positioned film or microchannel plate detectors. They find it is also useful and cost-effective to field elliptical crystals in existing snouts on the face-on gated microchannel plate framing cameras commonly used at many facilities. they numerically explored the full design space (… more
Date: April 16, 2004
Creator: Heeter, R.; Emig, J.; Fournier, K.; Hansen, S.; May, M. & Young, B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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FISSION-GAS-RELEASE FROM UO$sub 2$, INTERIM REPORT NO. 1

Description: The evolution of fission products from UO/sub 2/ during irradiation at high temperatures is of primary interest to the Gas-cooled Reactor Project. Fuel tests consisting of UO/sub 2/ pellets encapsulated in Inconel or stainless steel were irradiated in the LITR, ORR, and ETR. The capsules were pierced in hot cells, and the gases collected in evacuated systems. Fractions of this gas, of suitable activity for counting, were taken and then analyzed by gamma spectrometry. Larger fractions of gas wer… more
Date: August 16, 1960
Creator: Morgan, J. G.; Morgan, M. T. & Osborne, M. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characterization of ambient aerosols at the San Francisco International Airport using BioAerosol Mass Spectrometry

Description: The BioAerosol Mass Spectrometry (BAMS) system is a rapidly fieldable, fully autonomous instrument that can perform correlated measurements of multiple orthogonal properties of individual aerosol particles. The BAMS front end uses optical techniques to nondestructively measure a particle's aerodynamic diameter and fluorescence properties. Fluorescence can be excited at 266nm or 355nm and is detected in two broad wavelength bands. Individual particles with appropriate size and fluorescence prope… more
Date: March 16, 2006
Creator: Steele, P T; McJimpsey, E L; Coffee, K R; Fergenson, D P; Riot, V J; Tobias, H J et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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