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in subjects: "Pulse Circuits"  
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X-ray triggered switching in SF/sub 6/ insulated spark gaps

Description: Several methods are being investigated for triggering low-jitter pressurized, SF/sub 6/-insulated spark gaps operating at 3 MV with the capability of switching hundreds of kiloamperes. One method, which is located external to the main current carrying plasma channel, uses pulsed x-rays to generate ionization within the working gas volume to initiate low jitter gas breakdown. In this paper, a model of gas breakdown with x-ray ionization is developed and results of two series of experiments are d… more
Date: January 1, 1980
Creator: Neau, E.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

NDA technology for uranium resource evaluation. Progress report, January 1-June 30, 1979

Description: Calculational effort has focused on gamma-ray cross-section conversions, feasibility studies of an x-ray fluorescence (XRF) probe, and simulation of the prototype photoneutron logging tool. Experimental effort has concentrated on the design and fabrication of a field prototype photoneutron-based logging probe, on two types of borehole water monitors, and on a commercial pulse-shape discrimination unit to be used with the photoneutron logging probe. 37 figures, 4 tables.
Date: April 1, 1980
Creator: Evans, M.L. (comp.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effective mass trigger at the Brookhaven Multi-Particle Spectrometer (MPS)

Description: An effective mass trigger for use at the Brookhaven Multiparticle Spectrometer (MPS) is described. It is a microprocessor based device using extensive fast memory attached to proportional wire chambers in the MPS magnetic field. It will select kinematic quantities unique to the reaction being studied, thereby permitting higher sensitivities and a reduction in data-processing cost for MPS experiments. The principles of operation for this trigger, and the results of simulations to assess its perf… more
Date: January 1, 1980
Creator: Willen, E H
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

MSHAM: a multi-hit sample and hold multiplexer

Description: The MSHAM is a single-width CAMAC module intended to be used for dE/dx or Z-position measurements, with a density of 16 analog channels. It is designed to record up to four hits/event per channel but the design can be easily adapted to eight hits. The charge collection time interval allowed per hit is externally controlled in the range of 50 to 500 ns, according to the requirements of the experiment. Besides the electrical performance of the MSHAM, i.e., linearity, noise, cross-talk, etc., the … more
Date: October 1, 1980
Creator: Bernstein, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

FASTBUS system used in a high energy experiment

Description: Experiment No. 735, now being executed at the A.G.S. is implemented in FASTBUS. Briefly, this data acquisition system is designed to operate and gather data from high energy physics experiments at sub-microsecond speeds. It is a 32 bit bus system capable of operating at near-gigabit rates. The bus can be segmented with each segment operating independently when not communicating with each other. The system is based upon a very fast integrated circuit family, emitter coupled logic or ECL.
Date: January 1, 1980
Creator: Leipuner, L.B.; Fuhrmann, J. & Larsen, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Subnanosecond trigger system for ETA

Description: A high-voltage trigger system capable of triggering 30, 250 kV spark gaps; each with less than +- 1 ns jitter has been constructed. In addition to low jitter rates, the trigger system must be capable of delivering the high voltage pulses to the spark gaps either simultaneously or sequentially as determined by other system requirements. The trigger system consists of several stages of pulse amplification culminating in 160 kV pulses having 30 ns risetime. The trigger system is described and test… more
Date: May 30, 1980
Creator: Cook, E. G.; Lauer, E. J.; Reginato, L. L.; Rogers, D. & Schmidt, J. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Research in remote signal transmission electronics. Report II

Description: Research has been directed toward the evaluation of semiconductor circuits suitable for operation at temperatures of 230/sup 0/C. These circuits are to be utilized in monitoring neutron flux for initial fuel loading in a breeder reactor. Two new amplifier circuits were developed and tested, as well as new concepts for a high current driver circuit and a temperature-stable discriminator-multivibrator circuit. An improved dc-dc converter circuit was constructed and evaluated at 230/sup 0/C. Initi… more
Date: October 1, 1980
Creator: Kennedy, E. J.; Blalock, T. V.; Genther, S.; Mukund, P. & Orrick, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Test of a vacuum/dielectric surface flashover switch

Description: A vacuum surface flashover switch is being considered for > 10 kHz operation in a 250 kV, 10 ohm, 40 ns coaxial water Blumlein. Various possible switch designs are compared, and two promising ones selected for tests in the switch test facility at LLL. The initial test configurations are described.
Date: February 25, 1980
Creator: Smith, Ian D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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