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Stability of high field superconducting dipole magnets

Description: Superconducting dipole magnets of the window-frame type were constructed and operated successfully at Brookhaven National Laboratory. Examples of this type of magnet are the 6 T ''Model T'' magnet, and the 4 T 8/sup 0/ superconducting bending magnet. The latter magnet operated reliably since October 1973 as part of the proton beam transport to the north experimental area at the BNL AGS with intensities of typically 8 x 10/sup 12/ protons at 28.5 GeV/c passing through the magnet in a curved traj… more
Date: January 1, 1977
Creator: Allinger, J.; Danby, G.; Foelsche, H.; Jackson, J.; Prodell, A. & Stevens, A.
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High precision superconducting magnets

Description: Window-frame type superconducting dipole magnets have demonstrated accuracy and predictability of fields which compare well with the best conventional accelerator-type magnets. Precision measurements were made on the two series powered 2 m long 4 T modules comprising the 8/sup 0/ bending magnet at BNL after two years of beam operation including several dozen beam induced quenches. The integral field of the two units is identical to measurement accuracy, less than or equal to 1 x 10/sup -4/ part… more
Date: January 1, 1977
Creator: Allinger, J.; Danby, G.; Jackson, J. & Prodell, A.
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Ultra stable high field superconducting dipoles

Description: Tolerance of superconducting magnets to beam heating can be crucial. The magnets described produce a dipole field between parallel current sheets. Images in iron extend the sheets. The field is parallel to the current sheets so that high purity aluminum spacers can extend over the full length and height of the coil. High aluminum thermal conductivity and diffusivity results in locally produced heat being dissipated into helium over a large area. All magnets show little training with complete ''… more
Date: January 1, 1977
Creator: Allinger, J.; Danby, G.; Jackson, J. & Prodell, A.
Item Type: Refine your search to only Article
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Direct extraction H/sup -/ ion source

Description: A direct extraction H/sup -/ ion source of the Penning design described by Dudnikov was built and tested. To date a beam of 108 mA was extracted from a 10 x 0.5 mm/sup 2/ slit and transported through a 90/sup 0/ bending magnet into a Faraday cup at a duty factor of approximately 7 Hz x 700 ..mu..s (0.5 percent). The duty factor limitation is imposed by operating temperature requirements so that at reduced arc current a dc beam of 4 mA was reached.
Date: January 1, 1977
Creator: Allison, P. W.
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Experiments with a Dudnikov-type H source

Description: Operating characteristics of the ion source described were previously reported. It uses a Penning discharge to produce H ions by the surface-plasma principles and was constructed according to the design details presented by Dudnikov. Arc power must be held relatively constant at about 50 watts to maintain stable operation, and this occurs for an indicated cathode temperature of 500/sup 0/C. Within this limitation the source may be operated continuously at 2 mA or pulsed at over 100 mA, as measu… more
Date: January 1, 1977
Creator: Allison, P. W.
Item Type: Refine your search to only Article
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Improved performance for hoop-wound composite flywheel rotors

Description: Developmental work to date has shown the performance of hoop-wound composite flywheel rotors to be severely limited by composite transverse strength. This problem is addressed in a joint experimental-analytical effort aimed at improving transverse properties and assessing the impact of this improvement on flywheel performance. An improved test fixture designed to test hoop-wound cylinders in axial tension is developed. Test results show this specimen and test fixture produce more consistent dat… more
Date: January 1, 1977
Creator: Allred, R. E.; Foral, R. F. & Dick, W. E.
Item Type: Refine your search to only Article
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Experimental results using methanol and methanol/gasoline blends as automotive engine fuel

Description: Comparative emission and fuel energy economy data were generated using 1975 model vehicles adjusted for gasoline fuel and using gasoline and gasoline blended with 5 and 10% methanol; tests were made at temperatures of 20/sup 0/, 75/sup 0/, and 100/sup 0/F on a chassis dynamometer in a climate-controlled test chamber. Results suggest that emissions and fuel energy economy are generally affected to the extent that methanol addition affects air-fuel stoichiometry, fuel heat content, and fuel vapor… more
Date: January 1, 1977
Creator: Allsup, J. R.
Item Type: Refine your search to only Report
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Use of hodoscopes at ISABELLE

Description: A major problem for experimenters designing detectors for use at ISABELLE is the high interaction rate, one event every 25 nanoseconds at a luminosity of 10/sup 33/ cm/sup -2/ sec/sup -1/. Typical multiplicities range from a few at large angles (> approximately 45/sup 0/) to approximately 10 nearer the forward direction. This implies average rates as high as a particle every few nanoseconds. For experiments which require high luminosities, detectors must be designed which have very short (appro… more
Date: January 1, 1977
Creator: Alspector, J. & Miller, R. J.
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Low-level x-irradiation of the brain during development morphological, physiological, and behavioral consequences. Final report, September 1, 1976--August 31, 1977

Description: Morphological research was continued in the following areas: glial recovery patterns in the rat corpus callosum after x-irradiation during infancy; the prenatal development of the deep nuclei and cortex of the cerebellum; the prenatal development of the inferior olive, pontine gray and the precerebellar reticular nuclei; and the postnatal development of the olfactory bulb. In these studies autoradiography and x-irradiation were among the experimental techniques utilized. The behavioral studies,… more
Date: January 1, 1977
Creator: Altman, J.
Item Type: Refine your search to only Report
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Utilization of melting techniques for borehole wall stabilization. [Applied to geothermal well production systems]

Description: A research program on the Subterrene concept based on excavation by melting has been completed. Theoretical and experimental studies were made for a broad range of applications. Most recently, a study of Subterrene deep geothermal well production systems predicted that, compared to rotary-drilled wells, significant cost savings are possible, e.g., 2 and 4 million dollars for 10-km-deep wells and geothermal gradients of 25 and 40 K/km, respectively. It was also concluded that for most wells the … more
Date: January 1, 1977
Creator: Altseimer, J. H.
Item Type: Refine your search to only Article
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Stimulated Raman scattering in lithium niobate at kHz-pulse-repetition rates. Final report on task 1 of phase II, 1 July 1977-31 October 1977

Description: Sustained SRS was achieved on this mode for the first time, and the various factors that tend to limit LiNbO/sub 3/ Raman oscillator performance were studied. With this oscillator, 100% oscillation for periods of a few seconds was achieved and (about) 10% oscillation was achieved for indefinite periods of time. These results were obtained in spite of LiNbO/sub 3/ crystals coatings that were incorrectly centered with respect to wavelength and which consequently seriously impeded the operation of… more
Date: January 1, 1977
Creator: Ammann, E.O.
Item Type: Refine your search to only Report
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Performance and emissions of a catalytic reactor with propane, diesel, and Jet A fuels

Description: As part of the ERDA-funded Gas Turbine Highway Vehicle Systems project, tests were made to determine the performance and emissions of a catalytic reactor operated with propane, No. 2 diesel, and Jet A fuels. A 12-cm diameter and 16-cm long catalytic reactor using a proprietary noble metal catalyst was operated at an inlet temperature of 800 K, a pressure of 3 x 10/sup 5/ Pa and reference velocities of 10 to 15 m/s. No significant differences between the performance of the three fuels were obser… more
Date: January 1, 1977
Creator: Anderson, D. N.
Item Type: Refine your search to only Article
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Recruitment of benthic animals as a function of petroleum hydrocarbon concentrations in the sediment

Description: Three separate field installations, consisting of clean and oiled sediment in fiberglass trays, were placed in the intertidal zone of Sequim Bay, Washington to determine rates of hydrocarbon depuration and recruitment of benthic organisms. Detailed chemical analysis, using glass capillary gas chromatography, and GC/MS, were conducted such that individual components and hydrocarbon classes associated with the sediment after varying periods of field depuration could be quantitated. Depuration rat… more
Date: January 1, 1977
Creator: Anderson, J. W.; Riley, R. G. & Bean, R. M.
Item Type: Refine your search to only Article
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WRAP: user convenient relap code package. [BWR; PWR]

Description: A modular computational system known as the Water Reactor Analysis Package (WRAP) is being developed at the Savannah River Laboratory for analysis of loss of coolant accidents (LOCA's) and other transients in water reactor systems. At this time, WRAP is essentially a reprogrammed version of the RELAP4 computer code with an extensively restructured input format, a dynamic dimensioning capability and additional computational capabilities such as an automatic steady-state option for pressurized wa… more
Date: January 1, 1977
Creator: Anderson, M.M.
Item Type: Refine your search to only Article
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Insulator surface charging during fast pulsed surface flashover in vacuum

Description: The fact that charges accumulate on the surface of an electrically stressed insulator in vacuum is well established, but the rate of charging is not, and the role of this charge in surface flashover is controversial. Previous investigations support the hypothesis that charging proceeds very rapidly by means of an avalanche of electrons released from the insulator surface by secondary emission and that the avalanche is responsible for establishing the discharge channel in cathode-initiated surfa… more
Date: January 1, 1977
Creator: Anderson, R. A. & Brainard, J. P.
Item Type: Refine your search to only Article
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On-line computer system for work-order control

Description: A computer program is used with a direct viewing (CRT) terminal and printout unit to provide current information on all maintenance tasks at the Savannah River Laboratory. The data, available daily to foremen, scheduling personnel, and customers, are maintained in an on-line computer program, MIACJR. Interaction through the CRT terminal allows daily revisions as work progresses, jobs are initiated or completed, or other job changes are made (such as priority). Approximately 2000 jobs, open at a… more
Date: January 1, 1977
Creator: Anderson, R. A. Jr.
Item Type: Refine your search to only Article
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Salt anticlines in the Castile-Salado evaporite sequence, northern Delaware Basin, New Mexico

Description: Anticlines are more common around basin margin but are present in basin-center areas. Both Halite I and Halite II may have flowed but Halite I was movement more extensive. Depressions associated with anticlines may be due to either flowage or subsequent dissolution. Association with brine flows is common. Anticline probably was formed with mid-Cenozoic uplift and tilting of basin and with adjustments around reef margin.
Date: January 1, 1977
Creator: Anderson, R. Y. & Powers, D. W.
Item Type: Refine your search to only Article
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Interpretation of electromagnetic soundings in the Raft River geothermal area, Idaho

Description: An electromagnetic (EM) controlled source survey was conducted in the Raft River Valley, near Malta, Idaho. The purpose of the survey was: to field test U.S. Geological Survey extra-low-frequency (ELF) equipment using a grounded wire source and receiver loop configuration (which is designed to measure the vertical magnetic field (Hz) at the loop center for various frequencies); to present an example of the EM sounding data and interpretations using a previously developed inversion program; and … more
Date: January 1, 1977
Creator: Anderson, W.L.
Item Type: Refine your search to only Report
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Operation of the Fermilab accelerator as a proton storage ring

Description: To evaluate its potential for colliding beam experiments, a preliminary exploration of the Fermilab main ring operating in the storage ring mode was made. Beam lifetime and horizontal size measurements were obtained at 75, 100, 135, and 200 GeV/c. The data, when compared to predictions of a gas scattering model, imply the existence of other additional effects which merit further investigation.
Date: January 1, 1977
Creator: Ankenbrandt, C. M.; Fisk, H. E.; Johnson, R. P.; Miller, H. W.; Pfeffer, H.; Tollestrup, A. et al.
Item Type: Refine your search to only Article
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Longitudinal motion of the beam in the Fermilab booster

Description: When the Fermilab Booster Accelerator is operated at or above 1.5 x 10/sup 12/ protons per pulse (extraction current about 155 mA) large amplitude coupled bunch longitudinal dipole oscillations occur between transition and extraction times. The oscillations do not contribute to beam loss in the booster but, because the beam is transferred synchronously into preexisting buckets in the Main Ring, the oscillations contribute to a deterioration of beam quality in the main ring. Two mode numbers hav… more
Date: January 1, 1977
Creator: Ankenbrandt, C. M.; Griffin, J. E.; Johnson, R. P.; Lackey, J. & Meisner, K.
Item Type: Refine your search to only Article
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Reappearance of Linac bunch structure on booster bunches during capture and acceleration

Description: During adiabatic capture and initial 30 MHz beam bunching in the Fermilab Booster, very high frequency structure is observed on the bunches. The structure has the appearance of a bunch shape oscillation instability which appears and disappears in a sporadic manner. A computer simulation of injection dynamics reveals the fact that the observed structure is related to re-appearance of the injected linac bunch structure after relocation within the booster phase space.
Date: January 1, 1977
Creator: Ankenbrandt, C.; Gray, E.; Griffin, J. & Johnson, R. P.
Item Type: Refine your search to only Article
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