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2-D emittance equation with acceleration and compression

Description: Since both acceleration and compression are required for an Inertial Fusion Driver, the understanding of their effect on the beam quality, emittance, is important. This report attempts to generalize the usual emittance formula for the drifting beam to include these effects. The derivation of the 2-D emittance equation is carried out and a comparison with the particle code results is given. The 2-D emittance at a given axial location is reasonable to consider for a long beam, particularly with v… more
Date: October 1, 1988
Creator: Hahn, K. D. & Smith, L.
Item Type: Refine your search to only Report
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3-D numerical analysis of a high-gain free-electron laser

Description: We present a novel approach to the 3-dimensional high-gain free- electron laser amplifier problem. The method allows us to write the laser field as an integral equation which can be efficiently and accurately evaluated on a small computer. The model is general enough to allow the inclusion of various initial electron beam distributions to study the gain reduction mechanism and its dependence on the physical parameters. 16 refs., 8 figs., 1 tab.
Date: October 19, 1988
Creator: Gallardo, J.C.
Item Type: Refine your search to only Report
open access

An 805 MHz disk and washer structure for the Fermilab Linac Upgrade

Description: The Linac Upgrade program, a portion of the Tevatron Upgrade, calls for increasing the energy of the existing 200 MeV, 201.25 MHz linac to 400 MeV in order to reduce beam emittance degradation in the Booster. This is to be accomplished by replacing the last four Alvarez linac tanks with more efficient, higher gradient 805 MHz linac structure. One of the linac structures currently under study in a collaboration between Fermilab and SAIC is the Disk-and-Washer accelerating structure with bi-perio… more
Date: October 3, 1988
Creator: Moretti, A.; Young, D.; Lee, G.; Mills, F. E.; Zhou, P.; Swenson, D. A. et al.
Item Type: Refine your search to only Article
open access

Acceleration, current amplification and emittance in MBE-4, an experimental beam induction linear accelerator for heavy ions

Description: We report on the implementation of a second schedule of acceleration and current amplification in MBE-4. Control of the beam current within the bunch is improved over that in the first schedule by the addition of several small amplitude induction pulsers to compensate for acceleration errors and to control the ends of the bunch. Measurements of the longitudinal and transverse emittance are presented. 5 refs., 3 figs., 1 tab.
Date: October 1, 1988
Creator: Warwick, A. I.; Gough, D. E.; Keefe, D. & Meuth, H.
Item Type: Refine your search to only Article
open access

Advanced fusion MHD power conversion using the CFAR (compact fusion advanced Rankine) cycle concept

Description: The CFAR (compact fusion advanced Rankine) cycle concept for a tokamak reactor involves the use of a high-temperature Rankine cycle in combination with microwave superheaters and nonequilibrium MHD disk generators to obtain a compact, low-capital-cost power conversion system which fits almost entirely within the reactor vault. The significant savings in the balance-of-plant costs are expected to result in much lower costs of electricity than previous concepts. This paper describes the unique fe… more
Date: October 1, 1988
Creator: Hoffman, M. A.; Campbell, R.; Logan, B. G. (California Univ., Davis, CA (USA) & Lawrence Livermore National Lab., CA (USA))
Item Type: Refine your search to only Article
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An alternate side coupled structure for the Fermilab LINAC upgrade

Description: An alternate side coupled structure (SCS) is being investigated. Comparisons are made to the traditional SCS. Mechanical comparisons include the relative cost and ease of fabrication. This discussion also addresses the use of CNC machining. Electrical comparisons include field distributions and coupling constants. Measured and numerical data are presented. The coupling constant of the alternate SCS is adjusted by independently changing either the separation of the coupling and accelerating cavi… more
Date: October 1, 1988
Creator: Jurgens, T. G.; Kerns, Q. A.; Fritz, J. R. & May, M. A.
Item Type: Refine your search to only Article
open access

Annual survey of the Retired Piqua Nuclear Power Facility

Description: The annual environmental radiological survey of the Retired Piqua Nuclear Power Facility was performed on October 12, 1988, by Battelle-Columbus. The radiation survey was performed on site and samples were collected for analyses at the Battelle West Jefferson radiochemistry laboratory. Samples collected included area smears to be counted for removable surface contamination, tap water, a sump water sample, and a sump sludge sample. Analyses were performed for these media as described in the surv… more
Date: October 1, 1988
Creator: Kirsch, G. E.
Item Type: Refine your search to only Report
open access

Antiproton annihilation in quantum chromodynamics

Description: Anti-proton annihilation has a number of important advantages as a probe of QCD in the low energy domain. Exclusive reaction in which complete annihilation of the valance quarks occur. There are a number of exclusive and inclusive /bar p/ reactions in the intermediate momentum transfer domain which provide useful constraints on hadron wavefunctions or test novel features of QCD involving both perturbative and nonperturbative dynamics. Inclusive reactions involving antiprotons have the advantage… more
Date: October 1, 1988
Creator: Brodsky, Stanley J.
Item Type: Refine your search to only Article
open access

Argon Test Cell Coaxial Cable Feed Through Connector Testing

Description: Within each cryostat their will exist three Argon Monitoring Boxes. Located at different elevations these boxes are responsible for measuring the relative 'quality' of the Argon as far as it's ability to transfer electrons without recombination. Each box requires three miniature coaxial cables to provide a signal to the outside world. These cables are shielded in groups of three. Each cryostat requires three of these grouped cables which must pass through some form of feedthrough located in the… more
Date: October 31, 1988
Creator: Krasa, R.T.
Item Type: Refine your search to only Report
open access

Argonne National Laboratory contributions to the International Symposium on Fusion Nuclear Technology (ISFNT)

Description: A total of sixteen papers with authors from Argonne National Laboratory were presented at the First International Symposium on Fusion Nuclear Technology (ISFNT), held in Tokyo, Japan, in April 1988. The papers cover the results of recent investigations in blanket design and analysis, fusion neutronics, materials experiments in liquid metal corrosion and solid breeders, tritium recovery analysis, experiments and analysis for liquid metal MHD, reactor safety and economic analysis, and transient e… more
Date: October 1, 1988
Item Type: Refine your search to only Article
open access

The Assessment of Geometrical Effects on Compton Profile Measurements

Description: Energy dispersive measurements of Compton scattered x rays for analyses have become important with the development of high efficiency, high energy resolution detectors for 50--200 keV x rays. The Compton scattered x ray peak is an inherently broad peak resulting in part from the momentum distribution of the target electrons, referred to as the Compton profile. Hence, information from the width of the Compton peak can be used to study the momentum distribution. The actual peak width also depends… more
Date: October 1988
Creator: Gigante, G. E. & Hanson, A. L.
Item Type: Refine your search to only Article
open access

Atomic imaging and microanalysis of ceramics

Description: This paper is a short review of electron microscopy techniques, as applied to modern ceramics. Examples: representative of the significance of modern electron microscopy, methods of atomic resolution imaging, diffraction and spectroscopy in the task of characterising, and understanding typical ceramic materials are given. (JL)
Date: October 1, 1988
Creator: Thomas, G. & Ramesh, R.
Item Type: Refine your search to only Article
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Atomic orbital data for elements with atomic numbers 1 less than or equal to Z less than or equal to 103

Description: Atomic orbital energies and radial expectation values are tabulated for the ground state electronic configuration of all elements with Z less than or equal to 103 and for all orbitals having principal quantum numbers n less than or equal to 8. These tables have been developed for use in a model of electronic excitation and ionization that requires orbital data for both the occupied and unoccupied orbitals. The wavefunctions were calculated by the Dirac-Hartree-Fock-Slater method, with a local e… more
Date: October 1, 1988
Creator: Kerley, G.I.
Item Type: Refine your search to only Report
open access

Augmented Fish Health Monitoring for Washington Department of Wildlife, 1988 Annual Report.

Description: The augmented fish health monitoring project is funded by the Bonneville Power Administration with the mandate to collect fish health data on anadromous fish stocks of the Columbia River Basin in a standardized manner. The project began in 1986 and the data reported here was collected in the third year. This segment of the project was carried out by the Washington Department of Wildlife and summarizes fish health findings at anadromous game hatcheries in Washington State operated by the BPA. In… more
Date: October 1, 1988
Creator: Gearheard, Jim
Item Type: Refine your search to only Report
open access

Beam transport with magnetic solenoids and plasma lenses

Description: We examine the behavior of axisymmetric space-charge dominated beams in transport lines using numerical simulation. A typical transport line consisting of two axisymmetric linear lenses used to make a continuous beam from an ion source to a radio frequency quadrupole (RFQ) is considered. We compare the beam evolution when both lenses are magnetic solenoids or Gabor plasma lenses for beams with different initial density profiles. Emittance oscillations due to nonlinear space-charge forces by the… more
Date: October 1, 1988
Creator: Noble, R.J.
Item Type: Refine your search to only Article
open access

Betatron Function Parameterization of Beam Optics including Acceleration

Description: Betatron function parameterization of symplectic matrices is of recognized utility in beam optical computations. The traditional ''beta functions'' beta, alpha, gamma,(=(1+alpha{sup 2})/beta) and psi (the betratron phase advance) provide an emittance-independent representation of the properties of a beam transport system. They thereby decouple the problem of ''matching'' injected beam envelope properties to the acceptance of a particular transport system from the details of producing a beam of … more
Date: October 1, 1988
Creator: Douglas, D.R.; Kewisch, J. & York, R.C.
Item Type: Refine your search to only Article
open access

Beyond the standard model

Description: A variety of TeV scale Higgs and flavor sectors are discussed. Key questions are addressed: how can we tell if there is a light Higgs boson or if the Higgs sector is strongly interacting. What new signatures can be used to search for supersymmetry. Can flavor physics be described at a TeV without Yukawa couplings. Ideas are reviewed and some new developments mentioned. 51 refs., 13 figs.
Date: October 21, 1988
Creator: Hall, L.J.
Item Type: Refine your search to only Article
open access

Calibration of data acquisition system measurement of weld parameters

Description: The purpose of this talk was to outline the calibration and use of the MacSym Data Acquisition System to measure welding parameters in the Tritium Facility`s pinch welders. The point was stressed at the outset of the presentation that these parameters measured are not in any way the final criteria for accepting or rejecting a weld. Rather, the physical dimensions of the weld are the basis for accepting a weld, namely the thickness and closure length. So these welding parameters serve as ranges … more
Date: 1988-10~
Creator: Roberts, T.
Item Type: Refine your search to only Article
open access

A CDU-based data acquisition system for the energy spectrometer at the Stanford Linear Collider

Description: We describe a system using the Calorimetry Data Unit (a 32-channel multisample analog integrated circuit) to read out the charge ejected by secondary emission of a synchrotron beam from wires lying in its path. The wires comprise the Wire-Imaging Synchrotron Radiation Detector (WISRD) in the SLC Extraction-Line Spectrometer. The primary module in the system is a board containing 24 channels of charge sensitive amplification, shaping, sampling, multiplexing and digitization. This board also prov… more
Date: October 1, 1988
Creator: Briggs, D. D.; Tinsman, J. E.; Rouse, F. & Von Zanthier, C.
Item Type: Refine your search to only Article
open access

CEBAF Control System

Description: A logic-based computer control system is in development at CEBAF. This Unix/C language software package, running on a distributed, hierarchical system of workstation and supervisory minicomputers, interfaces to hardware via CAMAC. Software aspects to be covered are ladder logic, interactive database generation, networking, and graphic user interfaces.
Date: October 1, 1988
Creator: Bork, Rolf; Lahti, George; Navarro, Edwin; Grubb, Caroline; Sage, Joan & Moore, T.
Item Type: Refine your search to only Article
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