Accession Number : AD0648418

Title :   THE OPTIMIZATION OF THE CENTRAL REGION ELECTRIC FIELD FOR THE NRDL CYCLOTRON,

Corporate Author : NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF

Personal Author(s) : Reiser,M. P.

Report Date : 28 DEC 1966

Pagination or Media Count : 41

Abstract : Results of studies of the central region accelerating system employing the UCLA type 'dees-in-the-valleys' are presented. It is shown that a 90 deg. dee tip in conjunction with an adjustable puller best satisfies the requirements of a variable energy, multi-particle, isochronous cyclotron. The results of computer calculation for programmed orbits show that this geometry yields good orbit centering and satisfactory radial beam quality. The base width of the acceptable ion beam in the first harmonic mode is about 60 deg. at the start and broadens to 90 deg. during subsequent acceleration. In the third harmonic mode, on the other hand, the phase width is 30 deg. initially and subsequently contracts to 25 deg. Orbit details, positions of the source, puller, and defining slits are also described. (Author)

Descriptors :   (*ION ACCELERATORS, OPTIMIZATION), (*CYCLOTRONS, ELECTRIC FIELDS), PARTICLE TRAJECTORIES, ION BEAMS, RADIOFREQUENCY LENSES, DEUTERON BEAMS, GEOMETRIC FORMS

Subject Categories : Particle Accelerators

Distribution Statement : APPROVED FOR PUBLIC RELEASE