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An accelerator controls network designed for reliability and flexibility (open access)

An accelerator controls network designed for reliability and flexibility

The APS accelerator control system is a typical modern system based on the standard control system model, which consists of operator interfaces to a network and computer-controlled interfaces to hardware. The network provides a generalized communication path between the host computers, operator workstations, input/output crates, and other hardware that comprise the control system. The network is an integral part of all modern control systems and network performance will determine many characteristics of a control system. This paper describes the methods used to provide redundancy for various network system components as well as methods used to provide comprehensive monitoring of this network. The effect of archiving tens of thousands of data points on a regular basis and the effect on the controls network will be discussed. Metrics are provided on the performance of the system under various conditions.
Date: December 2, 1997
Creator: McDowell, W. P. & Sidorowicz, K. V.
Object Type: Article
System: The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 98, No. 219, Ed. 1 Tuesday, December 2, 1997 (open access)

Altus Times (Altus, Okla.), Vol. 98, No. 219, Ed. 1 Tuesday, December 2, 1997

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: December 2, 1997
Creator: Cole, Carol
Object Type: Newspaper
System: The Gateway to Oklahoma History
The APS intranet as a man-machine interface. (open access)

The APS intranet as a man-machine interface.

The Advanced Photon Source at Argonne National Laboratory has implemented a number of methods for people to interact with the accelerator systems. The accelerator operators use Sun workstations running MEDM and WCL to interface interactively with the accelerator, however, many people need to view information rather than interact with the machine. One of the most common interfaces for viewing information at the Advanced Photon Source is the World Wide Web. Information such as operations logbook entries, machine status updates, and displays of archived and current data are easily available to APS personnel. This interface between people and the accelerator has proven to be quite useful. Because the Intranet is operating-system independent and inherently unidirectional, ensuring the prevention of unauthorized or accidental control of the accelerators is straightforward.
Date: December 2, 1997
Creator: Ciarlette, D.; Gerig, R. & McDowell, W.
Object Type: Article
System: The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 76, No. 27, Ed. 1 Tuesday, December 2, 1997 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 76, No. 27, Ed. 1 Tuesday, December 2, 1997

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: December 2, 1997
Creator: Dobbs, Gary
Object Type: Newspaper
System: The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 93, No. 96, Ed. 1 Tuesday, December 2, 1997 (open access)

The Boerne Star (Boerne, Tex.), Vol. 93, No. 96, Ed. 1 Tuesday, December 2, 1997

Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date: December 2, 1997
Creator: Aldridge, Leon
Object Type: Newspaper
System: The Portal to Texas History
Chickasha Daily Express (Chickasha, Okla.), Ed. 1 Tuesday, December 2, 1997 (open access)

Chickasha Daily Express (Chickasha, Okla.), Ed. 1 Tuesday, December 2, 1997

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: December 2, 1997
Creator: Bush, Kent
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Daily Chickasha Star (Chickasha, Okla.), Vol. 96, No. 148, Ed. 1 Tuesday, December 2, 1997 (open access)

The Daily Chickasha Star (Chickasha, Okla.), Vol. 96, No. 148, Ed. 1 Tuesday, December 2, 1997

Newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: December 2, 1997
Creator: Settle, David
Object Type: Newspaper
System: The Gateway to Oklahoma History
Depth-dependent magnetism of layered superconductors : Nb/Si. (open access)

Depth-dependent magnetism of layered superconductors : Nb/Si.

We have studied magnetic field penetration and vortex line formation in a [Nb(100 {angstrom})/Si(15 {angstrom})]x20 multilayer by magnetization and polarized neutron reflection. With the magnetic field applied parallel to the surface, the magnetization revealed the presence of a kink above H{sub cl} indicative of transitions between one row of fluxoids and two rows of fluxoids parallel to the surface. The spin-dependence of neutron reflectivity below H{sub cl} was consistent with a penetration depth of 1200 {angstrom}, substantially larger than that of bulk Nb. In the mixed phase (H{sub ext} > H{sub cl}) the field was found to penetrate the surface, with a slope as found in the case of H{sub ext} < H{sub cl}. At H{sub ext} > H{sub cl} vortex forms in addition to surface penetration. A modulation of the vortex fields was found with the periodicity of the Nb/Si bilayers as evidenced by the spin dependence of the reflectivity at the first Bragg peak of the multilayer.
Date: December 2, 1997
Creator: Felcher, G. P.; Fullerton, E. E.; Osgood, R. M. & Yusuf, S. M.
Object Type: Article
System: The UNT Digital Library

Ensemble: 1997-12-02 - Men's and Women's Chorus

Choral concert performed at the UNT College of Music Concert Hall.
Date: December 2, 1997
Creator: University of North Texas. Men's Chorus.
Object Type: Sound
System: The UNT Digital Library

Ensemble: 1997-12-02 - Spectrum 2

Composition recital performed at the UNT College of Music Recital Hall.
Date: December 2, 1997
Creator: unknown
Object Type: Sound
System: The UNT Digital Library
The Harper Herald (Harper, Tex.), Vol. 69, No. 47, Ed. 1 Tuesday, December 2, 1997 (open access)

The Harper Herald (Harper, Tex.), Vol. 69, No. 47, Ed. 1 Tuesday, December 2, 1997

Weekly newspaper from Harper, Texas that includes local, state, and national news along with advertising.
Date: December 2, 1997
Creator: Bishop, Karen
Object Type: Newspaper
System: The Portal to Texas History
Improved gas-filled hohlraum performance on Nova with beam smoothing (open access)

Improved gas-filled hohlraum performance on Nova with beam smoothing

Gas-filled hohlraums are presently the base line ignition target design for the National Ignition Facility. Initial Nova experiments on gas-filled hohlraums showed that radiation temperature was reduced due to SBS and SRS scattering losses and that implosion symmetry had shifted compared with vacuum hohlraums and calculations. Subsequent single beam experiments imaging thermal x-ray emission showed the shift is due to laser-plasma heating dynamics and filarnentation in a flowing plasma. Experiments using a single beam have shown that scattering losses and effects of filamentation are reduced when the beam is smoothed with an random phase plate (RPP) or kinoform phase plate (KPP). Scattering is further reduced to less than 5% of the incident laser energy when SSD is added.
Date: December 2, 1997
Creator: Kauffman, R. L.; Powers, L. V. & Dixit, S. N.
Object Type: Article
System: The UNT Digital Library
[Letter and handwritten note from Dan Morales] (open access)

[Letter and handwritten note from Dan Morales]

Letter from Dan Morales about his decision not to seek re-election, with accompanying handwritten note.
Date: December 2, 1997
Creator: Morales, Dan
Object Type: Letter
System: The UNT Digital Library
The Mannford Star (Mannford, Okla.), Vol. 2, No. 119, Ed. 1 Tuesday, December 2, 1997 (open access)

The Mannford Star (Mannford, Okla.), Vol. 2, No. 119, Ed. 1 Tuesday, December 2, 1997

Weekly newspaper from Mannford, Oklahoma that includes local, state, and national news along with advertising.
Date: December 2, 1997
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
[News Clip: American airlines package] captions transcript

[News Clip: American airlines package]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 2, 1997, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Bell Ringer] captions transcript

[News Clip: Bell Ringer]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, covering a news story by reporter Debra Damiano about Margaret Williams who works at Salvation Army to raid funds. This story aired at 5:00 P.M.
Date: December 2, 1997
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Class conduct package] captions transcript

[News Clip: Class conduct package]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 2, 1997, 5:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Dallas Convention] captions transcript

[News Clip: Dallas Convention]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 2, 1997
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Internet Fares] captions transcript

[News Clip: Internet Fares]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10:00 P.M.
Date: December 2, 1997
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: John Cusack] captions transcript

[News Clip: John Cusack]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 2, 1997, 11:00 a.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Meat Radiation] captions transcript

[News Clip: Meat Radiation]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10:00 P.M.
Date: December 2, 1997
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Morales] captions transcript

[News Clip: Morales]

Video footage from the KXAS-TV television station in Fort Worth, Texas, covering a news story.
Date: December 2, 1997, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Switzer] captions transcript

[News Clip: Switzer]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10:00 P.M.
Date: December 2, 1997
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Switzer PKG] captions transcript

[News Clip: Switzer PKG]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 2, 1997, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library