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Beam-head erosion in a highly conductive background

Description: An analytic estimate of beam heat erosion in a highly conductive background is presented and compared to numerical results. Model equations are derived and forced into a self-similar form from which parameter scalings are easily obtained. It is found that erosion in this limit is driven by scattering and is very rapid for high conductivities (greater than or equal to 10/sup 11/) due to the high fraction of current neutralization.
Date: April 26, 1983
Creator: Buchanan, H.L.
Partner: UNT Libraries Government Documents Department
open access

Update on Beam Extraction

Description: At the time of the 1981 Workshop on Experimental Use of the SLC, we published an extraction scheme for the MINIQUAD final focus (FF) optics. Since then a different FF optics design has been selected. With the same achromat section and outboard telescope, it allows a number of options for the inboard telescope. This note describes the new extraction system and briefly considers electron-electron extraction and the consequences of an extraction kicker malfunction. 4 references, 7 figures, 1 table. more
Date: August 26, 1983
Creator: Keller, Lewis P.
Partner: UNT Libraries Government Documents Department
open access

Phase and amplitude control system for Stanford Linear Accelerator

Description: The computer controlled phase and amplitude detection system measures the instantaneous phase and amplitude of a 1 micro-second 2856 MHz rf pulse at a 180 Hz rate. This will be used for phase feedback control, and also for phase and amplitude jitter measurement. The program, which was originally written by John Fox and Keith Jobe, has been modified to improve the function of the system. The software algorithms used in the measurement are described, as is the performance of the prototype phase a… more
Date: September 26, 1983
Creator: Yoo, S.J.
Partner: UNT Libraries Government Documents Department
open access

ENSL82 and CDRL82: the 1982 version of evaluated nuclear structure libraries ENSL and CDRL

Description: Since the issuance of UCRL 50400 Vol. 23, ENSL and CDRL: Evaluated Nuclear Structure Libraries, errors have been noted in half-lives. Most of these errors were for half-lives represented in exponential form, where the exponent is positive. This situation occurs only when the unit for half-life is years. A few errors were associated with ground states having unknown half-lives. These were incorrectly labeled as stable (i.e., a value of 1.0 E + 50 s was entered). Such ground states are assigned h… more
Date: January 26, 1983
Creator: Howerton, Robert J.
Partner: UNT Libraries Government Documents Department
open access

Assessment and cleanup of the Taxi Strip waste storage area at LLNL (Lawrence Livermore National Laboratory)

Description: In September 1982 the Hazards Control Department of the Lawrence Livermore National Laboratory (LLNL) began a final radiological survey of a former low-level radioactive waste storage area called the Taxi Strip so that the area could be released for construction of an office building. Collection of soil samples at the location of a proposed sewer line led to the discovery of an old disposal pit containing soil contaminated with low-level radioactive waste and organic solvents. The Taxi Strip ar… more
Date: January 26, 1983
Creator: Buerer, A.
Partner: UNT Libraries Government Documents Department
open access

Worker Relocation Assistance: Moving People to Jobs

Description: One characteristic of the dislocated worker problem is that a mismatch exists between the number and kinds of jobs offered by employers and the number and kinds of skills possessed by workers in the same geographic area. At the same time, other geographic areas have unfilled job openings and relatively low unemployment rates. Government-assisted worker relocation is one tool of employment policy that might be used to reduce these regional imbalances in labor supply and demand. This report descr… more
Date: May 26, 1983
Creator: LeGrande, Linda
Partner: UNT Libraries Government Documents Department
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