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High-efficiency multidetector system for tumor scanning

Description: A high-efficiency detector system developed especially for medical imaging has three specially cut Ge(Li) coaxial detectors (total volume 249 cm$sup 3$). At 122 keV, the peak efficiency is 93 percent of that of a 7.6 x 7.6 cm NaI (Tl) detector. Degradation of the paralleled energy resolution is avoided and resolution is improved by 35 percent over that of conventional output-summing techniques by gating the detector outputs. In effect this multiplexes them to a single line output. (auth)
Date: November 18, 1975
Creator: Kirby, J. A.; Phelps, P. L.; Armantrout, G. A.; Sawyer, D. & Beck, R. N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Computer control and monitoring of neutral beam injectors on the 2XIIB CTR experiment at LLL

Description: The original manual control system for the 12 neutral beam injectors on the 2XIIB Machine is being integrated with a computer control system. This, in turn, is a part of a multiple computer network comprised of the three computers which are involved in the operation and instrumentation of the 2XIIB experiment. The computer control system simplifies neutral beam operation and centralizes it to a single operating position. A special purpose console utilizes computer generated graphics and interac… more
Date: November 18, 1975
Creator: Pollock, G. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Pellet trajectory correction

Description: The injection of frozen ammonia droplets in the Baseball II magnetic confinement system is discussed. Two ways to correct for random particle trajectories are described: (1) design non-turbulent orifices, and (2) design a trajectory correction system. (MOW)
Date: November 18, 1975
Creator: Bogdanoff, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

2XIIB getter material problems

Description: The uniformity of wire characteristics is vital to the reliable long- time operation of the titanium alloy wire. Of particular importance is the diameter, total emissivity, and alloy mix. The getter wire must be operated at a minimum rate while the life is determined by the maximum rate. At a particular current the difference between the maximum and minimum rate is determined by variations in wire characteristics. Small percentage variations in these characteristics can result in large variatio… more
Date: November 18, 1975
Creator: Vogtlin, G. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

2XIIB computer data acquisition system

Description: All major plasma diagnostic measurements from the 2XIIB experiment are recorded, digitized, and stored by the computer data acquisition system. The raw data is then examined, correlated, reduced, and useful portions are quickly retrieved which direct the future conduct of the plasma experiment. This is done in real time and on line while the data is current. The immediate availability of this pertinent data has accelerated the rate at which the 2XII personnel have been able to gain knowledge in… more
Date: November 18, 1975
Creator: Tyler, G.C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Theoretical Band Structure Analysis on Possible High-Z Detector Materials

Description: Theoretical energy band structure calculations have been utilized to investigate several high-Z materials for potential use as ambient temperature radiation detectors. Using the pseudopotential technique, the band structure for HgI$sub 2$ has been determined and the effective masses of the holes and electrons have been estimated. Theoretical mobilities of the electrons and holes as a function of temperature have been computed for HgI$sub 2$ and CdTe and are compared to experimental data. (auth)
Date: November 18, 1975
Creator: Yee, J. H.; Sherohman, J. W. & Armantrout, G. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Electronics system for the LLL negative ion test stand

Description: A test stand is in operation at LLL for the purpose of developing techniques and obtaining design information which will be used to develop efficient neutral beams. The knowledge gained will be used in the design of a 200 kV neutral beam test stand scheduled for operation in CY 77. (auth)
Date: November 18, 1975
Creator: Branum, D.R. & Kamppinen, L.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

[Letter from Pedro J. Gonzalez to Gilberto Izquierdo A.]

Description: Letter from Pedro J. Gonzalez to Gilberto Izquierdo A. A long, curving title is printed above small lines of text that are positioned above and beside a bird icon, below which is a date. Beneath the date is a wide column of text positioned to the right of a smaller text column. The wider column of text continues onto the back side of the page, ending above a signature, printed lines of text, and a handwritten paragraph.
Date: November 18, 1975
Creator: Parlee, Lorena, 1945-2006
Item Type: Refine your search to only Text
Partner: UNT Libraries Special Collections
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