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The Electron-Ring Accelerator Program at Berkeley

Description: Early in 1968 a research group was set up at the Lawrence Radiation Laboratory to investigate the exciting new concept of accelerating ions by means of relativistic electron rings, which had been introduced and developed by Veksler, Sarantsev, and other workers at Dubna. The initial work of our group was reported at the first USSR National Conference on Particle Accelerators in 1968. In this report the author review the subsequent progress and the present program.
Date: October 1, 1970
Creator: Peterson, J. M.; Chupp, W. W.; Garren, A. A.; Keefe, D.; Lambertson, G. R.; Laslett, L. J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Experiments on Forming,Compressing and Extracting Electron Rings for the Collective Acceleration of Ions

Description: In experiments related to the development of the electron-ring accelerator, electrons were injected into a pulsed magnetic field to form rings that were then compressed radially to a small size. The injected beam had a current of about 150 A at an energy of 3.3 MeV with an energy spread of {+-} 0.1% and a pulse length duration of 20 nsec. At low intensity, an increase in the minor radius of the ring and a large loss of electrons was observed to occur during the compression cycle. At high intens… more
Date: October 1, 1970
Creator: Keefe, D.; Chupp, W. W.; Garren, A. A.; Lambertson, G. R.; Laslett, L. J.; Luccio, A. U. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Transverse Two-Stream Instability in the Presence of Strong Species-Species and Image Forces

Description: The theory of coherent transverse oscillations of two particle species is extended to include strong species-species and image forces. It is shown that in general the species-species force can considerably alter the instability threshold. Conversely, it is shown that the limit on the performance of an electron ring accelerator imposed by the requirement of stable ion electron oscillations, is not significantly improved by the inclusion of images.
Date: September 1972
Creator: Laslett, L. J.; Sessler, A. M. & Mohl, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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On the Performance Characteristics of Electron Ring Accelerators

Description: On the basis of our present understanding of the physical phenomena involved in an electron ring accelerator (ERA), a theoretical study is made of the performance which might be expected for an ERA. Rigorous upper bounds are obtained on the rate of energy gain, from which it is shown that, in order to prevent azimuthal instability, parameters must be selected such that (for reasonable fields, injector properties, etc., but with no safety factors) the proton energy gain is less than 80 MeV/m. Nu… more
Date: September 1, 1972
Creator: Mohl, D.; Laslett, L. J. & Sessler, A. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evolution of the amplitude distribution function for a beam subjected to stochastic cooling

Description: The suggestion of S. van der Meer for stochastic cooling or feedback damping of a circulating charged particle beam offers promise of increasing the luminosity of a storage ring and may be a particularly attractive technique if antiprotons are to be employed as one of the beams in such a device. The original report of van der Meer considered the repeated use of a kicker to suppress the transverse phase-space displacement of the centroid of a group of particles detected at a pick-up station situ… more
Date: May 1, 1977
Creator: Laslett, L. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Transport of intense ion beams

Description: The possibility of using intense bursts of heavy ions to initiate an inertially confined fusion reaction has stimulated interest in the transport of intense unneutralized heavy ion beams by quadrupole or solenoid systems. This problem was examined in some detail, using numerical integration of the coupled envelope equations for the quadrupole case. The general relations which emerge are used to develop examples of high energy transport systems and as a basis for discussing the limitations impos… more
Date: March 16, 1977
Creator: Lambertson, G.; Laslett, L. J. & Smith, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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