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Status of the Holifield Heavy Ion Research Facility

Description: The Holifield Heavy Ion Research Facility presently operates the Oak Ridge Isochronous Cyclotron (ORIC). This accelerator provides heavy ions up to argon with energies useful for nuclear physics. The Phase I expansion of this facility, now a year away from completion, includes a 25-MV vertical folded tandem accelerator, beam transport and injection systems to use the ORIC as an energy booster, and additional experiment areas for the beams directly from the tandem. The tandem--cyclotron combinat… more
Date: January 1, 1978
Creator: Martin, J. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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International cyclotron conferences: twenty-five years of progress

Description: This brief introduction reviews a few of the highlights of the nine previous meetings to perhaps convey an appreciation of the time-scale of the significant achievements of past years and to leave the thought that the future is as filled with promise as was the past.
Date: January 1, 1984
Creator: Martin, J. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Commissioning and utilization of a synchrotron for high energy physics research

Description: From seminar on high-energy accelerator science; Tokyo and Tsukuba, Japan (5 Nov 1973). A general outline for the organization and planning for the design and utilization of synchrotrons for high-energy physics research is given. Topics include establishing goals, execution of design and construction, facilities for high-energy physics, and management of the high-energy physics facility. (WHK)
Date: January 1, 1973
Creator: Martin, J.H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Alternates to the Cyclotron for Heavy-Ion Acceleration.

Description: The status and future possibilities for several alternates to the cyclotron for heavy-ion acceleration are discussed. Linear accelerators, both conventional and superconducting, tandem electrostatic accelerators, and the electron ring accelerator are among the accelerator types and concepts reviewed compared.
Date: October 31, 1972
Creator: Martin, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cyclotrons: 1978

Description: A compilation is presented of the experimental facilities of the world's cyclotrons including history and status, staff and operation, research staff, target facilities, magnet, acceleration system, vacuum system, characteristic beams, beam properties, and a plan view of the facility for each cyclotron. (GHT)
Date: January 1, 1978
Creator: Martin, J.A. (comp.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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CRAY-1 instruction analysis: a comparison of two methods

Description: In an effort to obtain data for workload characterization and performance evaluation studies, statistics were gathered on the frequencies of individual instructions in codes executing on the Cray-1. Two methods were used for the collection of data: (1) direct dynamic counting of executing instructions and (2) sampling of instructions at regular intervals during execution of the code. This paper describes the implementation of both methods and compares the results obtained. We conclude that beca… more
Date: January 1, 1983
Creator: Martin, J. L. & Warnock, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Managing the fusion burn to improve symbiotic system performance

Description: Symbiotic power systems, in which fissile fuel is produced in fusion-powered factories and burned in thermal reactors characterized by high conversion ratios, constitute an interesting near-term fusion application. It is shown that the economic feasibility of such systems depend on adroit management of the fusion burn. The economics of symbiotes is complex: reprocessing and fabrication of the fusion reactor blankets are important components of the production cost of fissile fuel, but burning fi… more
Date: January 1, 1979
Creator: Renier, J.P. & Martin, J.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Investigation of fire at Council, Alaska: A release of approximately 3000 curies of tritium

Description: On September 6, 1987, about 6:00 a.m., a fire was discovered in the community building at Council, Alaska, where 12 radioluminescent (RL) light panels containing approximately 3000 Ci were stored. All of the tritium in the panels was released as a result of the fire. This report summarizes the recovery of the remains of the panels destroyed in the fire and investigations completed to evaluate the fire site for possible exposure of community residents or contamination by tritium release in the e… more
Date: April 1, 1988
Creator: Jensen, G.A. & Martin, J.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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D-T and D-D cycles for fusion-powered U-233 factories

Description: In spite of a low reaction parameter, the semicatalyzed D-D cycle constitutes an interesting alternative for symbiotic systems because it eliminates the need for blanket tritium breeding. Previous work on D-D fusion-fission hybrids concluded that blanket energy multiplication is low and that this cycle may be of interest for ignited plasmas only. Here, it is shown that low multiplication does not penalize the symbiotic system.
Date: January 1, 1979
Creator: Renier, J.P. & Martin, J.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Neutron production gas targets

Description: A chronology of neutron production gas target techniques used at the Los Alamos Scientific Laboratory Van de Graaff facility is given, together with detailed descriptions of recent advances.
Date: February 1, 1976
Creator: Martin, J. T. & Smith, R. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Effect of Radiation on Chemical Reactions. Final Report

Description: Primarily the studies have been devoted to a search for chemical reactions which are promoted by gamma radiation. The underlying purpose behind the studies has been to develop uses for the radiation available from waste fission prcducts. A brief description of all the reactions studied during the program is presented along with appropriate references to the original reports and publications. These give the detailed account of the work done on each reaction and the reader is referred to them for… more
Date: August 1, 1957
Creator: Martin, J. J. & Anderson, L. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preparation of Radiation Sources From Fission Products by the Clay Process

Description: This study was made to determine the feasibility of producing usable radiation sources by the montmorillonite clay process. The clay process was developed at Brookhaven National Laboratory primarily to solve the problem of ultimately disposing of waste fission products. After reviewing the process in detail, it is shown that radiation sources may be prepared with specific activity as high as 4.5 curies of Ce/sup 137/ per gram of clay. Sources of this strength would be entirely suitable for such… more
Date: August 1, 1957
Creator: Schoolmeester, J. E. & Martin, J. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Compton scatter camera for spectral imaging of 0.5 to 3.0 MeV gamma rays

Description: A prototype Compton scatter camera for imaging gamma rays has been built and tested. This camera addresses unique aspects of gamma-ray imaging at nuclear industrial sites, including gamma-ray energies in the 0.5 to 3.0 MeV range and polychromatic fields. Analytic models of camera efficiency, resolution and contaminating events are developed. The response of the camera bears strong similarity to emission computed tomography devices used in nuclear medicine. A direct Fourier based algorithm is de… more
Date: December 31, 1994
Creator: Martin, J.B.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Energy storage options for space power

Description: Including energy storage in a space power supply enhances the feasibility of using thermal power cycles (Rankine or Brayton) and providing high-power pulses. Review of storage options (superconducting magnets, capacitors, electrochemical batteries, thermal phase-change materials (PCM), and flywheels) suggests that flywheels and phase-change devices hold the most promise. Latent heat storage using inorganic salts and metallic eutectics offers thermal energy storage densities of 1500 to 2000 kJ/k… more
Date: January 1, 1985
Creator: Hoffman, H. W.; Martin, J. F. & Olszewski, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Superconducting conversion of the Oak Ridge isochronous cyclotron

Description: The superconducting conversion of ORIC is being planned to replace the aluminum main magnet coils with an NbTi superconducting coil system. The average magnetic field would be increased from the present 1.9 T to 3.3 T to provide a maximum increase in energy 100 to 300 q/sup 2//A/sup 2/.
Date: January 1, 1981
Creator: Martin, J. A.; Ball, J. B. & Cleary, T. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Planning guidance for nuclear-power-plant decontamination. [PWR; BWR]

Description: Direct and indirect costs of decontamination are considered in the benefit-cost analysis. A generic form of the benefit-cost ratio is evaluated in monetary and nonmonetary terms, and values of dollar per man-rem are cited. Federal and state agencies that may have jurisiction over various aspects of decontamination and waste disposal activities are identified. Methods of decontamination, their general effectiveness, and the advantages and disadvantages of each are outlined. Dilute or concentrate… more
Date: June 1, 1983
Creator: Munson, L.F.; Divine, J.R. & Martin, J.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Variable field magnetic extraction channel for ORIC

Description: An improved magnetic beam extraction channel for the Oak Ridge Isochronous Cyclotron (ORIC) has been designed to significantly reduce the external field disturbance and provide uniform in-channel field. This will make beam extraction near nu/sub r/ = 1 more predictable. The new channel consists of an iron tube of constant cross section with independently adjustable windings, both inside and outside the iron. The windings have a cos theta current density distribution. The iron tube is 1 meter lo… more
Date: January 1, 1985
Creator: Hudson, E. D.; Martin, J. A. & Lord, R. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Real-time delay monitor for flow-system cell sorters

Description: For optimum performance in cell sorting, it is critical to assure proper timing in the charging of droplets to be deflected. A method for determining the transit delay time in cell sorters has been devised and applied to daily operation in the Los Alamos sorter systems. This delay monitor relies on detection of either scattered or absorbed light from cells in the fluid stream near the point of droplet breakoff.
Date: April 23, 1978
Creator: Martin, J.C.; McLaughlin, S.R. & Hiebert, R.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Superconducting conversion of the Oak Ridge Isochronous Cyclotron

Description: The superconducting conversion of the Oak Ridge Isochronous Cyclotron (ORIC) will replace the existing aluminum main magnet coils with a NbTi superconducting coil system to provide an increase in magnetic field from 1.9 to 3.3 T. The higher magnetic field will provide a three-fold increase in maximum energy capability of the cyclotron for high mass ions. The conversion will include a new beam extraction system, magnet yoke stiffening to counteract the increased magnetic forces, and minor modifi… more
Date: January 1, 1981
Creator: Martin, J. A.; Ball, J. B. & Cleary, E. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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10-GeV heavy-ion collider

Description: This paper presents a brief report on a study for a relativistic heavy-ion collider covering an energy span from 1 GeV on 1 GeV to 10 GeV on 10 GeV. This energy range was selected as most appropriate for exploitation of the baryon-rich region of relativistic nucleus-nucleus collisions. The study was done prior to the Wells College meeting of the NSAC Long-Range Plan Working Group which recommended a collider with tip energy of 30 GeV on 30 GeV. The present work has not been modified to reflect … more
Date: January 1, 1983
Creator: Young, G. R.; Martin, J. A. & Ball, J. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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