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Overview of WARP, a particle code for Heavy Ion Fusion

Description: The beams in a Heavy Ion beam driven inertial Fusion (HIF) accelerator must be focused onto small spots at the fusion target, and so preservation of beam quality is crucial. The nonlinear self-fields of these space-charge-dominated beams can lead to emittance growth; thus a self-consistent field description is necessary. We have developed a multi-dimensional discrete-particle simulation code, WARP, and are using it to study the behavior of HIF beams. The code`s 3d package combines features of a… more
Date: February 22, 1993
Creator: Friedman, A.; Grote, D. P.; Callahan, D. A.; Langdon, A. B. & Haber, I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

PIC space-charge emission with finite {Delta}t and {Delta}z

Description: A new algorithm for space charge emission has been developed to provide the correct (to a few percent) Child-Langmuir steady-state current limits as the number of mesh points in the voltage gap drops to O(10). Further, the transient behavior of such flows compares well with idealized, analytic cases, lending confidence as we extend these algorithms into full RZ geometry with curved emitting surfaces to investigate transient characteristics of realistic injector designs.
Date: February 22, 1993
Creator: Hewett, D. W. & Chen, Yu-Jiuan
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Longitudinal beam dynamics for heavy ion fusion using WARPrz

Description: WARPrz is a 2.5 dimensional, cylindrically symmetric, electrostatic, particle-in-cell code. It is part of the WARP family of codes which has been developed to study heavy ion fusion driver issues. WARPrz is being used to study the longitudinal dynamics of heavy ion beams including a longitudinal instability that is driven by the impedance of the LINAC accelerating modules. This instability is of concern because it can enhance longitudinal momentum spread; chromatic abhoration in the lens system… more
Date: February 22, 1993
Creator: Callahan, D. A.; Langdon, A. B.; Friedman, A. & Haber, I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Geographos asteroid flyby and autonomous navigation study

Description: Deep Space Program Science Experiment (DSPSE), also known as Clementine, is a collection of science experiments conducted in near-earth with the goal of demonstrating Strategic Defense Initiative Office (SDIO) developed technologies. The 785 lb (fully fueled) spacecraft will be launched into low Earth orbit in February 1994 together with a Star 37 solid kick motor and interstage. After orbit circulation using Clementine`s 110 lb Delta-V thruster, the Star 37 will execute a trans-lunar injection… more
Date: February 22, 1993
Creator: Ng, L. C.; Pines, D. J.; Patz, B. J. & Perron, D. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department

Oral History Interview with Louis Cresson, February 22, 1993

Description: Interview with Louis Cresson, a former member of the Civilian Conservation Corps from Hillside, Pennsylvania. Cresson discusses his family, life during the Great Depression, and work at CCC camps in Shawville and Renovo, Pennsylvania.
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: February 22, 1993
Creator: Price, Peggy & Cresson, Louis
Item Type: Refine your search to only Book
Partner: UNT Oral History Program
captions transcript

[News Clip: Food Stamps]

Description: Video footage from the NBC 5/KXAS station in Fort Worth, Texas, to accompany a news story about fraud involving food stamp programs. This story was produced for the 5:00 P.M. news broadcast.
Date: February 22, 1993, 10:00 p.m.
Duration: 49 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Castillo-Funeral]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 22, 1993, 6:00 p.m.
Duration: 32 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Von Erich]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 22, 1993, 5:00 p.m.
Duration: 1 minute 47 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
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