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Development of magnetic mirror systems for nuclear testing applications (open access)

Development of magnetic mirror systems for nuclear testing applications

Several system studies have concluded that the small size and steady state nature of magnetic mirror systems provide attractive features for nuclear-testing applications. The principle shortcoming of mirror systems is their small data base relative to that of tokamaks. This paper summarizes the present data base and describes experiments that could be carried out with small modifications of existing facilities to explore plasma physics issues associated with the production of high neutron fluxes in magnetic mirror configurations. The experiments would demonstrate physics principles important to such future applications of fusion power neutrons as blanket testing, tritium production, fissile fuel production, or decontamination of high-level radioactive nuclear-reactor wastes.
Date: August 7, 1986
Creator: Simonen, T. C.; Futch, A. H. & Kaiser, T. B.
System: The UNT Digital Library
Supplemental report of the Attorney General to the Safe Growth Cabinet Council (open access)

Supplemental report of the Attorney General to the Safe Growth Cabinet Council

In February of 1986, the Department of Energy (DOE) will present to Congress a proposal to construct a Monitored Retrievable Storage facility (MRS) in Tennessee. This report is a listing of the comments received regarding the MRS plan.
Date: January 7, 1986
Creator: Wurz, R.T.
System: The UNT Digital Library
Surface characterization of an energetic material, pentaerythritoltetranitrate (PETN), having a thin coating achieved through a starved addition microencapsulation technique (open access)

Surface characterization of an energetic material, pentaerythritoltetranitrate (PETN), having a thin coating achieved through a starved addition microencapsulation technique

The objective of this research was to: (1) determine the nature of a thin coating on an explosive material which was applied using a starved addition microencapsulation technique, (2) understand the coating/crystal bond, and (3) investigate the wettability/adhesion of plastic/solvent combinations using the coating process. The coating used in this work was a Firestone Plastic Company copolymer (FPC-461) of vinylchloride/trifluorochloroethylene in a 1.5/1.0 weight ratio. The energetic explosive examined was pentaerythritoltetranitrate (PETN). The coating process used was starved addition followed by a solvent evaporation technique. Surface analytical studies, completed for characterization of the coating process, show (1) evidence that the polymer coating is present, but not continuous, over the surface of PETN; (2) the average thickness of the polymer coating is between 16-32 A and greater than 44 A, respectively, for 0.5 and 20 wt % coated PETN; (3) no changes in surface chemistry of the polymer or the explosive material following microencapsulation; and (4) the presence of explosive material on the surface of 0.5 wt % FPC-461 coated explosives. 5 refs., 15 figs., 6 tabs.
Date: May 7, 1986
Creator: Worley, C.M.
System: The UNT Digital Library
Rayleigh-Taylor instability in compressible fluids: Final report for the period 1 October 1985-30 September 1986 (open access)

Rayleigh-Taylor instability in compressible fluids: Final report for the period 1 October 1985-30 September 1986

The purpose of this research program is to investigate fluid dynamic instabilities and mixing initiated by the interaction of shock waves with interfaces between light and heavy gases. In particular, the nonlinear stage of shock-initiated Rayleigh-Taylor instability (also known as the Richtmeyer-Meshkov instability), the secondary instabilities (e.g., the Kelvin-Helmholtz instability) arising therefrom and the resulting mixing of the two gases are of interest. This report describes activities during the performance period 1 October 1985 to 30 September 1986.
Date: October 7, 1986
Creator: Sturtevant, B.
System: The UNT Digital Library
SPR-9 concept definition study: FY 1986 summary (open access)

SPR-9 concept definition study: FY 1986 summary

This report summarizes the results of work undertaken to advance design of the SPR-9 MMW power reactor. Gas-cooled thermal reactors coupled with Brayton cycle power conversion appear feasible and have several attractive features for multi-megawatt space power systems. The high temperature capability of the reactor removes it as the limiting component on system performance. The low fuel inventories required make systems based on thermal reactors a lesser safeguard risk. However, an advanced radiator design must be developed to reduce system mass. (JDH)
Date: October 7, 1986
Creator: Walter, C.E.
System: The UNT Digital Library
Supplemental report of the Attorney General to the Safe Growth Cabinet Council (open access)

Supplemental report of the Attorney General to the Safe Growth Cabinet Council

In February of 1986, the Department of Energy (DOE) will present to Congress a proposal to construct a Monitored Retrievable Storage facility (MRS) in Tennessee. This report is a listing of the comments received regarding the MRS plan.
Date: January 7, 1986
Creator: Wurz, R. T.
System: The UNT Digital Library
D-Zero Vacuum System (open access)

D-Zero Vacuum System

The system pumping speed was calculated by taking the reciprocal of the sum of the reciprocal pump speed and the reciprocal line conductances. The conductances of the pipe were calculated from the following formulas taken from the Varian vacuum manual. This report updates the original to reflect the pumping curves and basic vacuum system characteristics for the purchased components and installed piping of the D-Zero vacuum system. The system consists of two Edward's E2M275 two stage mechanical pumps, a Leybold-Heraeus WSU2000 Blower and three Varian 4' diffusion pumps (one for each cryostat). Individual pump and system pumping speed curves and a diagram of the system is included.
Date: April 7, 1986
Creator: Wintercorn, S.J.
System: The UNT Digital Library
Stability of Coastin Beams in the Debuncher (open access)

Stability of Coastin Beams in the Debuncher

The stability of high intensity beams has been a matter of some concern. While anti-proton operation uses beam currents of 10 a or less, it is sometimes useful to have proton beams with currents of the order of 1 ma and narrow (booster sized) momentum spreads. This note describes calculations of what can be expected for coasting beam instabilities and, in particular, the effect of the (high impedance) 53 MHz cavities. This note specifically does not describe transverse instabilities, bunched beam instabilities, or turbulence in the debunching process. The stability limit can be calculated using standard formulae (van der Meer CERN/PS/AA/80-4 and many others). The result of this calculation is the 'stability plot' shown in figure 1a. This calculation assumes a 1 ma beam with a {Delta}p ({sigma}) of 2 MeV/c. The curve (allowed impedance) scales inversely with beam current and {Delta}p{sup 2}. The momentum spread was assumed to be gaussian. Figures 1b and 1c are the same plot but with different scales. The interpretation of this plot is that if the impedance of any device (or devices) is outside this curve, then the assumed beam distribution is unstable. More rigorously one can make a so-called 'Nyquist plot' where one …
Date: February 7, 1986
Creator: Marriner, J.
System: The UNT Digital Library
Spin Effects in High-P(T)^2 p+p --> p+p at 800 to 900 GeV (open access)

Spin Effects in High-P(T)^2 p+p --> p+p at 800 to 900 GeV

We propose to study the spin-orbit Analyzing Power, A, in p+p + p+p at large P{sub {perpendicular}}{sup 2}. We propose to run at Fermilab around Fall 1987 and scatter a high intensity unpolarized proton beam of 800 to 900 GeV from a Polarized Proton Target; we would measure the difference between the d{sigma}/dt when the target spin is up and when it is down. Our main goal is to see if the unexpected large values of A recently found at the 28 GeV AGS in proton-proton elastic scattering persist to Fermilab energies. The large A value of 24 {+-} 8% at P{sub {perpendicular}}{sup 2} = 6.5 (GeV/c){sup 2} was not only unexpected but also seems difficult to reconcile with the A = 0 prediction of conventional models of strong interactions, such as perturbative QCD. The validity of perturbative QCD is believed to improve with increasing energy and with increasing P{sub {perpendicular}}{sup 2}, and this proposed Fermilab experiment would increase the incident energy by about a factor of 30. The experiment would be done using a Polarized Proton Target (PPT) employing radiation-doped NH{sup 3} beads and a 'local' cooling power of about 130 mW at 1/2{sup o} K. Such a target …
Date: March 7, 1986
Creator: Court, G. R.; Crabb, D. G.; Krisch, A. D.; Lin, A. M. T.; Raymond, R. S.; Roser, T. et al.
System: The UNT Digital Library
Particle Tracking on the BNL Relativistic Heavy Ion Collider (open access)

Particle Tracking on the BNL Relativistic Heavy Ion Collider

None
Date: August 7, 1986
Creator: F., Dell G.
System: The UNT Digital Library
The Hydrogen Pellet Target (open access)

The Hydrogen Pellet Target

None
Date: July 7, 1986
Creator: B., Trostell
System: The UNT Digital Library
National security risks of dual-use transfers to China (open access)

National security risks of dual-use transfers to China

This report addresses several basic question about China's military-industrial complex to help provide a framework that policy maker can use in evaluating the likely effects of dual use transfers on Chinese military capability, and the attendant national security risks to the US.
Date: July 7, 1986
Creator: Frieman, Wendy
System: The UNT Digital Library
Texas Broilers: For Week Ending May 3, 1986 (open access)

Texas Broilers: For Week Ending May 3, 1986

Weekly report of the Texas Crop and Livestock Reporting Service on broiler chick numbers in Texas and compared with other states. It includes compiled statistics across six consecutive weeks, from the week ending March 29 to the week ending May 3, during 1985 and 1986 for broiler eggs set, chicks hatched, and chicks placed.
Date: May 7, 1986
Creator: Texas Crop and Livestock Reporting Service
System: The Portal to Texas History
Acceleration of Polarized Proton in RHIC (open access)

Acceleration of Polarized Proton in RHIC

In this report is examined the possibility of polarized proton in RHIC collider. The issues needed for the future study is also discussed. With the improved source and AGS booster, its is expected that the luminosity for polarized beam could be 0.4*10^32/cm^2/sec at energy of 250 Gev in RHIC. There we need 4 snakes and 4 spin rotators in the collider.
Date: November 7, 1986
Creator: Lee, S. Y.; Tepikian, S. & Courant, E. D.
System: The UNT Digital Library
The Strategic Defense Initiative: Program Description and Major Issues (open access)

The Strategic Defense Initiative: Program Description and Major Issues

"This report describes the evolution, composition, and major issues of the [Strategic Defense Initiative" (p. iii).
Date: January 7, 1986
Creator: DiMaggio, Cosmo; Manfredi, Arthur F., Jr & Hildreth, Steven A.
System: The UNT Digital Library