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Photomultiplier characteristics considerations for the deep underwater muon and neutrino detection system

Description: The results of an investigation of the characteristics of photomultipliers for the Deep Underwater Muon and Neutrino Detection (DUMAND) System are discussed. The pulse-height resolution, the afterpulsing phenomena and the gain sensitivity to the ambient magnetic field have been determined for large photocathode area photomultipliers. Furthermore, the transient time difference, the single photoelectron time spread, and the collection and photocathode quantum efficiency uniformity as a function o… more
Date: February 23, 1980
Creator: Leskovar, B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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40-kV, 25-ms neutral-beam power supply for TMX

Description: Modifications are described to upgrade the neutral-beam power supply for the TMX from 40 kV, 10 ms to 40 kV, 25 ms. The redesign of the accel and suppressor power supplies to achieve separation of the high-voltage and control sections, operation of the arc pulse lines in series, operation of the arc pulse lines in a noisy environment with SCR trigger and crowbar, and modifications to the electrolytic storage banks are discussed.
Date: September 23, 1977
Creator: Leavitt, G.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Problems Encountered During Four Years of ORR Operation

Description: The over-all design and operation of ORR is reviewed in the light of four years of operating experience. Items discussed consist of the reactor components and instrumentation, reactor and pool cooling systems (including system cleanup), the emergency systems for electric power and reactor cooling, the waste-disposal systems (liquid, gaseous, and solid), and the building, itself. The ORR was the first of a class of reactors which combined the features of both the pool-reactor and tank-reactor ty… more
Date: August 23, 1962
Creator: Tabor, W.H. & Costner, R.A. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Data report for the Southwest Residential Experiment Station, January 1982

Description: Physical performance data obtained from the photovoltaic energy systems under test at the Southwest Residential Experiment Station in Las Cruces, New Mexico are tabulated and graphed for the month of January, 1982. Data drawn from the Residential Data System (RDS) appears in several formats. A one-page summary is provided as well as a more detailed hour-by-hour tabulation for an average day of the month. Energy histograms are provided, based on RDS data and recording kilowatt hour meters. The h… more
Date: February 23, 1982
Creator: Lieberman, M.; Hai, O. Y.; Hocking, G. & Whitaker, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DART II documentation. Volume III. Appendices

Description: The DART II is a data acquisition system that can be used with air pollution monitoring equipment. This volume contains appendices that deal with the following topics: adjustment and calibration procedures (power supply adjustment procedure, ADC calibration procedure, analog multiplexer calibration procedure); mother board signature list; schematic diagrams; device specification sheets (microprocessor, asynchronous receiver/transmitter, analog-to-digital converter, arithmetic processing unit, 5… more
Date: May 23, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Characterization of DC-S-2000 silicone rubber as an O-ring material for laser amplifier systems

Description: We evaluated mechanical, thermal, thermodynamic, and chemical properties of Dow Corning DC-S-2000, a silicone rubber filled with silica, that was selected as an O-ring material for SHIVA laser amplifiers. We compared the properties of a batch cured in-house with the manufacturer's specifications, and we developed specific quality-control tests to evaluate future production batches of this elastomer. We also examined mechanical and thermal transitions not described in the manufacturer's bulletin… more
Date: March 23, 1979
Creator: Hoffman, D.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The AGS Booster high frequency rf system

Description: A high level rf system, including a power amplifier and cavity, has been designed and built for the AGS Booster. It covers a frequency range of 2.4 to 4.2 MHz and will be used to accelerate high intensity protons. Low intensity polarized protons and heavy ions, to the 1.5 GeV level. A total accelerating voltage of up to 90 kV will be provided by two cavities, each having two gaps. The internally cross coupled, pushpull cavities are driven by an adjacently located power amplifier. In order to ac… more
Date: April 23, 1991
Creator: Sanders, R.T.; Cameron, P.; Eng, W.; Goldman, M.A.; Jablonski, E.; Kasha, D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Coating of the SLAC klystron windows

Description: Secondary emission is not likely to be suppressed in thin films. Accumulated charges leak away with two time constants. The fast time constant should be short compared to the pulse duration, and the slow time constant should be short compared to the time between pulses. The Joule heating may be prohibitive in reaching adequate charge removal. The joule heating may be reduced by films which conduct little in the direction of the electric field and much better in the perpendicular direction.
Date: May 23, 1984
Creator: Krienen, F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Dual-laser flow cytometry of single mammalian cells. [Performance of low-power argon and high-power krypton laser system for quantitative analysis and sorting of cells]

Description: An improved dual-laser flow cytometric system for quantitative analysis and sorting of mammalian cells has been developed using a low-power argon and high-power krypton laser as illumination sources, thus permitting the excitation of fluorescent dyes having absorption regions ranging from the ultraviolet to infrared. Cells stained in liquid suspension with fluorescent dyes enter a flow chamber where they intersect two spatially separated laser beams. Separate pairs of quartz beam-shaping optics… more
Date: April 23, 1978
Creator: Steinkamp, J.A.; Orlicky, D.J. & Crissman, H.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Motion control of the accumulator flying wires

Description: Flying wire systems for the Fermilab Accumulator are being constructed in order to measure the transverse beam profiles during stacking. Each device passes a 25 micron carbon filament through the beam transversely at a constant velocity of 10 m/s. Collisions between the beam particles and the wire produce secondary particle cascades, which in turn produce photons in a scintillator. A photomultiplier tube is used to measure the light intensity while the wire position is determined by an optical … more
Date: April 23, 1990
Creator: Wang, X.Q.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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SVX Sequence Crate Custom J2/J3 Backplane

Description: The Custom J2/J3 Backplane is a full length (21 slot) user specified custom 3U backplane to be used in both the J2 and J3 positions. Slot spacing is identical to that used for VME (0.8-inch), and each backplane shall fit into a standard Eurocard VME style crate. The purpose of the Custom J2/J3 Backplane is to send and receive control and clock signals from the SVX chips via 3M pleated foil cables (Slots 2-21), and in slot 1, accept a cable connector and route its signal through to a signal dist… more
Date: October 23, 1997
Creator: Utes, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Optimum operating temperature for accelerator diskloaded waveguide: test results from Sector 2

Description: To keep the accelerator structures in proper tuned condition with variable applied RF power, the Cu-temperature of the structures should be kept constant. From the specifications in CN 102, we derive that a ..delta../PHI/ = +-10/sup 0/ per ten-foot structure would be permissible to stay within a ..delta..E/E of 0.5%. Further measurements should be performed to prove that all structures stay within this limit under the SLC operating conditions where the average RF power level will be in the orde… more
Date: September 23, 1983
Creator: Allen, M.; Millich, A. & Schwarz, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Some Effects of Specimen and Loading Variables on the Fracture Toughness of Epoxy-to-Substrate Interfaces

Description: The nucleation and growth of cracks at critical interfaces can degrade electrical and mechanical performance of electronic assemblies. Sandia National Laboratories is working to develop a fracture mechanics-based approach for assessing the reliability of components containing interfaces and subjected to thermal/mechanical fatigue. Models are being developed to predict the nucleation of a crack-like flaw in the vicinity of an interface, the path of crack propagation (along interface or into subs… more
Date: December 23, 1998
Creator: Guess, T.R.; Reedy, E.D. & Stavig, M.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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