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Nuclear Science, IEEE Transactions on

Issue 3  Part I and II • Date June 1969

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Displaying Results 1 - 25 of 297
  • [Front cover]

    Publication Year: 1969 , Page(s): c1
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  • IEEE Nuclear Science Group

    Publication Year: 1969 , Page(s): c2
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  • Table of contents

    Publication Year: 1969 , Page(s): i
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  • Conference Committees

    Publication Year: 1969 , Page(s): ii
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  • Comments on the Conference

    Publication Year: 1969 , Page(s): iii - v
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  • The Nucleus

    Publication Year: 1969 , Page(s): vi
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  • Remarks by Representative Craig Hosmer Joint Committee on Atomic Energy

    Publication Year: 1969 , Page(s): vii - x
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  • Session A - Plenary I

    Publication Year: 1969 , Page(s): xi - xxv
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  • Accelerators and the World around US

    Publication Year: 1969 , Page(s): 1 - 4
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  • The 70-GeV proton synchrotron

    Publication Year: 1969 , Page(s): 5 - 11
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    The parameters of the 70-GeV proton synchrotron were published in the Proceedings of the International Conference on High Energy Accelerators in 1963 (see Vladimersky et al., "70-GeV Proton Synchrotron," Proceedings of the International Conference on High Energy Accelerators, Dubna, M. Atomizdat, 1964). The accelerator status during the period before its startup was reported at the Frascati conference in 1965, as well as at the Washington and Cambridge conferences in 1967. The accelerator began to work in 14 October 1967. Since then particle dynamics has been investigated, the systems of the slow proton beam guiding onto the internal targets were put into operation, and secondary beams were formed. Brief information on the present accelerator status is given. View full abstract»

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  • The 200-GeV Accelerator

    Publication Year: 1969 , Page(s): 12 - 14
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    The Atomic Energy Commission has assigned to the Universities Research Association the task of developing a 200-GeV particle-physics research laboratory. The development of this laboratory requires the construction of an accelerator, experiment areas, offices, utilities, roads and many other things; it also requires that they be combined so as to create an environment for imaginative research. A design staff under the leadership of R. R. Wilson has been attacking this whole problem for about one-and-a-half years. The problem is challenging because the initial scope for the laboratory is somewhat limited, and within this scope and our expectation of funding, we must create an effective laboratory so that the success of our initial experimentsmay encourage Congress to invest in further development. You can best judge the effectiveness of our design efforts by examining the papers presented at this conference on specific components of the accelerator. I would like to present to you something of the planning for the laboratory as a whole. View full abstract»

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  • Collective method of proton acceleration

    Publication Year: 1969 , Page(s): 15 - 24
    Cited by:  Papers (1)
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  • The Electron-Ring Accelerator

    Publication Year: 1969 , Page(s): 25 - 28
    Cited by:  Papers (2)
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  • Some Considerations Associated with High Current Accelerator Ion Sources

    Publication Year: 1969 , Page(s): 29 - 34
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  • A Mass Analyzer System for the High Voltage Terminal of a Van De Graaff Heavy Ion Accelerator

    Publication Year: 1969 , Page(s): 35 - 37
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    A computer analysis of an electromagnetic mass analyzer system which will be mounted in the high voltage terminal of a planned 3MeV van de Graaff heavy ion accelerator at M.I.T. has been performed. Since one of the main fields of application of this new facility will be ion implantation, a stigmatic focusing analyzer with high transmission is required. It is shown that a magnetic sector field which is formed by plane inclined pole faces meets both these requirements. Second order ion optical calculations for this type of field are given and compared with two more conventional alternatives of stigmatic focusing analyzers namely the homogeneous field fringe field focusing magnet and the rotationally symmetric field with logarithmic field gradient n = 1/2. The complete ion injector system which will consist of a high temperature metal ion source, an extraction and focusing system and a stigmatic double focusing mass analyzer will have a total weight of about 400 pounds and be capable of unit mass resolution at least up to mass number 150. View full abstract»

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  • An Ion Source for Negative Heavy Ions

    Publication Year: 1969 , Page(s): 38 - 40
    Cited by:  Papers (8)
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  • Ion Source Modification for He- Ions

    Publication Year: 1969 , Page(s): 41 - 42
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  • Inert Gas Ion Beams from a Duoplasmatron Ion Source

    Publication Year: 1969 , Page(s): 43 - 45
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    Operational characteristics of a Duoplasmatron ion source were examined for millianmpere positive ion beams of Helium and Argon. Ion beam current was measured as a function of extraction voltage for various source arc and source magnet currents. With the source parameters fixed, the data exhibits a critical voltage, above which the target current saturates and is independent of extraction voltage. This saturation current is linearly dependent on the source arc and source magnet currents. Below the critical voltage, the target current can be described by a V3/2 dependency on extraction voltage. These observations indicate that the total ion current extracted from the plasma is only dependent on the source parameters. Results are compared for strong field and weak field extractor electrodes which confirm that the total current extracted from the plasma is independent of the extraction field strength. View full abstract»

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  • Test of LASL Ion Source with 200-kV Pierce Accrelerating Column

    Publication Year: 1969 , Page(s): 46 - 50
    Cited by:  Papers (3)
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    A 200-kV test stand has been constructed for design evaluation of an ion source and accelerating column to operate at 750 kV. Requirements are a 6% to 12% duty factor for a 30-mA. pton pulse current with a normalized emittance (Area ????/??) of < 0.04 cm-mrad. The ion source is a Von Ardenne duoplasmatron with a large expansion cup. Beam extraction is accomplished by an exact Pierce geometry accelerating column. The test stand vacuum system uses a 1000 l/s ion pump capable of handling continuously the 2 atm-cc/min hydrogen throughput of the ion source. Pumping cells of the ion pwsp are expected to have a useful life in excess of 4000 h. The test stand can be completely operated by computer control. The test stand results indicate that the requirements at 750 kV can be realized. View full abstract»

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  • The "HIPAC" as a Source of Highly Stripped Heavy Ions

    Publication Year: 1969 , Page(s): 51 - 58
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    The HIPAC Ion Source is a novel device intended to produce very highly stripped heavy ions; the achievement of this objective would permit the acceleration of heavy ions in relatively modest cyclotrons, linacs, etc. The problem of stripping heavy ions by successive electron impacts is discussed in general terms. The HIPAC Ion Source is then described using for illustrative purposes a nominal set of characteristic parameters. A torus 20 cm in maior radius is estimated to yield 1013 ions/s of Kr20+ or 1011 ions/s of U60+. The current status of experimental work on the concept is briefly reviewed. View full abstract»

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  • Design and Performance of the Sandia Laboratories Hermes II Flash X-Ray Generator

    Publication Year: 1969 , Page(s): 59 - 63
    Cited by:  Papers (12)
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    Pulsed power technology has grown rapidly during the last decade. Particular credit is due to research efforts at United Kingdom Atomic Weapons Research Establishment (AWRE). The largest machine presently in operation is the Sandia Laboratories Hermes II which has produced a 170 kA beam of electrons at energies of 12 million volts for times of 100 ns. This paper reviews the design and performance of the Hermes II and includes data from Hermes I, a prototype. View full abstract»

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  • Development of an 18-Megavolt Marx Generator

    Publication Year: 1969 , Page(s): 64 - 69
    Cited by:  Papers (3)
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    An 18-megavolt, 1 megajoule Marx generator has been constructed and tested to 11 MV as the primary energy store of the Hermes II flash x-ray machine. A geometrical arrangement for the capacitors that takes advantage of the stray capacities to provide a wide triggering range and fast Marx erection time was developed from model and circuit studies. The design parameters of the Marx were checked by constructing and testing a 4 MV, 100 kJ generator using components proposed for the 18 MV system. Spark gaps were developed specifically for the generator and have operated successfully for over 50,000 gap firings. View full abstract»

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  • Dynamics of Electron Beam Flow from Pulsed, High Current "Field Emission" Cathodes

    Publication Year: 1969 , Page(s): 70 - 74
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  • A Monte-Carlo Model for the Heavy Ion Charge Change Accelerator

    Publication Year: 1969 , Page(s): 75 - 77
    Cited by:  Papers (2)
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  • The Ion Optic System for to Heavy Ion Charge Change Accelerator

    Publication Year: 1969 , Page(s): 78 - 80
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IEEE Transactions on Nuclear Science focuses on all aspects of the theory and applications of nuclear science and engineering, including instrumentation for the detection and measurement of ionizing radiation; particle accelerators and their controls; nuclear medicine and its application; effects of radiation on materials, components, and systems; reactor instrumentation and controls; and measurement of radiation in space.

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