Accession Number : ADA304074

Title :   Study of Brightness and Current Limitations in Intense Charged Particle Beams.

Descriptive Note : Final rept. 1 Jul 93-31 Dec 94,

Corporate Author : MARYLAND UNIV COLLEGE PARK LAB FOR PLASMA RESEARCH

Personal Author(s) : Reiser, M. ; Guharay, S.

PDF Url : ADA304074

Report Date : 31 DEC 1994

Pagination or Media Count : 102

Abstract : Our research on intense, high brightness charged particle beams encompassed efficient generation and transport of H beams. The work was directed towards the development of neutral particle beams for space defense applications. Other important relevance of this work has been in the context of developing low emittance injectors for future high luminosity colliders. In both the cases, the present state of the art of beam qualities is far from the desired level. Over the past several years, we made detailed theoretical work, both analytical and computational, on the problem of emittance growth. A 30 mA, 35 kV H beam was considered with the aim of transporting this highly diverging beam from an ion source over a distance of about 30 cm and transforming it into a converging beam which would match with the acceptance ellipse parameters of a high frequency radio frequency quadrupole accelerator (RFQ). We studied the beam dynamics in detail using simulation codes, and then designed a low energy beam transport (LEBT) device. We included the practical constraints as much as possible in our theoretical studies; this led us to expect good performance of the LEBT. The LEBT has been built in house.During the period of mid January 1994 to December 1994 we focussed on the operation of the magnetron type H source; the major components of the source were earlier received from the Superconducting Super Collider Laboratory (SSCL). After a good deal of investigation of the control parameters we decided to implement some major modifications in the source for long, reliable operation. The technological know how for source operation has been developed. We are now fully equipped to run in house experiments using the magnetron ion source facility and the LEBT system.

Descriptors :   *PARTICLE BEAMS, *SYNCHROCYCLOTRONS, LUMINOSITY, DYNAMICS, PARAMETERS, THEORY, INTENSITY, CHARGED PARTICLES, BRIGHTNESS, EMITTANCE, RELIABILITY, TRANSPORT, INJECTORS, BEAM STEERING, PARTICLE COLLISIONS, ION SOURCES, ELLIPSES, MAGNETRONS, CYCLOTRON MAGNETS.

Subject Categories : Particle Accelerators

Distribution Statement : APPROVED FOR PUBLIC RELEASE