Advanced soluble hydroliquefaction and hydrotreating catalysts (open access)

Advanced soluble hydroliquefaction and hydrotreating catalysts

The purpose of the present program is to develop soluble analogs of surface confined catalysts that can be impregnated directly into the coal structure at low temperatures. This approach should avoid problems related to surface area dependence, a two phase (surface-liquid) reaction system and, mass transport limitations.
Date: November 22, 1991
Creator: Laine, R.M. (Michigan Univ., Ann Arbor, MI (United States). Dept. of Materials Science and Engineering) & Stoebe, T. (Washington Univ., Seattle, WA (United States). Dept. of Materials Science and Engineering)
Object Type: Report
System: The UNT Digital Library
Advanced soluble hydroliquefaction and hydrotreating catalysts. Quarterly report No. 5, August 7, 1991--November 6, 1991 (open access)

Advanced soluble hydroliquefaction and hydrotreating catalysts. Quarterly report No. 5, August 7, 1991--November 6, 1991

The purpose of the present program is to develop soluble analogs of surface confined catalysts that can be impregnated directly into the coal structure at low temperatures. This approach should avoid problems related to surface area dependence, a two phase (surface-liquid) reaction system and, mass transport limitations.
Date: November 22, 1991
Creator: Laine, R. M. & Stoebe, T.
Object Type: Report
System: The UNT Digital Library
Medium-energy neutrino physics (open access)

Medium-energy neutrino physics

A selection of opportunities for neutrino physics from a source generated from pions that decay in flight and at rest is described. The present source at LAMPF has a duty factor of about 6%; improvements in opportunities that emerge from a source using a pulse 0.25 {mu}sec long from a proton storage ring are also described. 7 refs., 9 figs.
Date: November 22, 1991
Creator: White, D. Hywel
Object Type: Article
System: The UNT Digital Library
PILAC: A pion linac facility for 1-GeV pion physics at LAMPF (open access)

PILAC: A pion linac facility for 1-GeV pion physics at LAMPF

A design study for a Pion Linac (PILAC) at LAMPF is under way at Los Alamos. We present here a reference design for a system of pion source, linac, and high-resolution beam line and spectrometer that will provide 10{sup 9} pions per second on target and 200-keV resolution for the ({pi}{sup +}, K{sup +}) reaction at 0.92 GeV. A general-purpose beam line that delivers both positive and negative pions in the energy range 0.4-1.1 GeV is included, thus opening up the possibility of a broad experimental program as is discussed in this report. A kicker-based beam sharing system allows delivery of beam to both beam lines simultaneously with independent sign and energy control. Because the pion linac acts like an rf particle separator, all beams produced by PILAC will be free of electron (or positron) and proton contamination. 4 refs., 6 figs.
Date: November 22, 1991
Creator: Thiessen, H.A. & White, D.H.
Object Type: Article
System: The UNT Digital Library
Potential for thermal coal and Clean Coal Technology (CCT) in the Asia-Pacific (open access)

Potential for thermal coal and Clean Coal Technology (CCT) in the Asia-Pacific

The Coal Project was able to make considerable progress in understanding the evolving energy situation in Asia and the future role of coal and Clean Coal Technologies. It is clear that there will be major growth in consumption of coal in Asia over the next two decades -- we estimate an increase of 1.2 billion metric tons. Second, all governments are concerned about the environmental impacts of increased coal use, however enforcement of regulations appears to be quite variable among Asian countries. There is general caution of the part of Asian utilities with respect to the introduction of CCT's. However, there appears to be potential for introduction of CCT's in a few countries by the turn of the century. It is important to emphasize that it will be a long term effort to succeed in getting CCT's introduced to Asia. The Coal Project recommends that the US CCT program be expanded to allow the early introduction of CCT's in a number of countries.
Date: November 22, 1991
Creator: Johnson, C.J. & Long, S.
Object Type: Report
System: The UNT Digital Library
Potential for thermal coal and Clean Coal Technology (CCT) in the Asia-Pacific. Final technical report (open access)

Potential for thermal coal and Clean Coal Technology (CCT) in the Asia-Pacific. Final technical report

The Coal Project was able to make considerable progress in understanding the evolving energy situation in Asia and the future role of coal and Clean Coal Technologies. It is clear that there will be major growth in consumption of coal in Asia over the next two decades -- we estimate an increase of 1.2 billion metric tons. Second, all governments are concerned about the environmental impacts of increased coal use, however enforcement of regulations appears to be quite variable among Asian countries. There is general caution of the part of Asian utilities with respect to the introduction of CCT`s. However, there appears to be potential for introduction of CCT`s in a few countries by the turn of the century. It is important to emphasize that it will be a long term effort to succeed in getting CCT`s introduced to Asia. The Coal Project recommends that the US CCT program be expanded to allow the early introduction of CCT`s in a number of countries.
Date: November 22, 1991
Creator: Johnson, C. J. & Long, S.
Object Type: Report
System: The UNT Digital Library
A pulsed lepton source at LAMPF (open access)

A pulsed lepton source at LAMPF

A Pulsed Lepton Source is being considered at the LAMPF facility at Los Alamos National Laboratory. The source plan is described together with a description of the components and performance as they exist at present. 9 figs.
Date: November 22, 1991
Creator: White, D. Hywel
Object Type: Article
System: The UNT Digital Library
Some physics requirements for triggering in the intermediate tracking system of SDC (open access)

Some physics requirements for triggering in the intermediate tracking system of SDC

I have investigated trigger requirements for the intermediate tracking system of the SDC detector, using muons in the final states of some physics processes of interest and relevance to the program envisaged to be pursued at the SSC. The study is done at the physics event generator level with the PYTHIA package, augmented by a very simplistic simulation of the momentum measurement expected from the intermediate tracking system. For the range in pseudorapidity of {vert bar}{eta}{vert bar} = 1.7--2.5, I find a subdivision into four basic bins sufficient to ensure that the width of the transverse momentum trigger threshold will not be dominated by the lack of knowledge of the polar angle. In addition, the azimuthal resolution has be better than 1 mrad to allow transverse momentum thresholds from p{sub t}{approx}10 GeV/c up to and beyond p{sub t}=20 GeV/c to be implemented which are needed to accomplish the physics goals. 10 figs., 1 tab.
Date: November 22, 1991
Creator: Trost, H.J.
Object Type: Report
System: The UNT Digital Library
Some physics requirements for triggering in the intermediate tracking system of SDC (open access)

Some physics requirements for triggering in the intermediate tracking system of SDC

I have investigated trigger requirements for the intermediate tracking system of the SDC detector, using muons in the final states of some physics processes of interest and relevance to the program envisaged to be pursued at the SSC. The study is done at the physics event generator level with the PYTHIA package, augmented by a very simplistic simulation of the momentum measurement expected from the intermediate tracking system. For the range in pseudorapidity of {vert_bar}{eta}{vert_bar} = 1.7--2.5, I find a subdivision into four basic bins sufficient to ensure that the width of the transverse momentum trigger threshold will not be dominated by the lack of knowledge of the polar angle. In addition, the azimuthal resolution has be better than 1 mrad to allow transverse momentum thresholds from p{sub t}{approx}10 GeV/c up to and beyond p{sub t}=20 GeV/c to be implemented which are needed to accomplish the physics goals. 10 figs., 1 tab.
Date: November 22, 1991
Creator: Trost, Hans-Jochen
Object Type: Report
System: The UNT Digital Library