A Study of the One-Third Integer Resonance Extraction for the 200 GeV Accelerator

1 June 1971

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science

Vol. 18 (3) , 1015-1017
https://doi.org/10.1109/tns.1971.4326265

Abstract

Results of a detailed numerical study on the slow extraction of 200-400 GeV beams from the NAL accelerator are presented. Topics discussed are: position and strength of sextupoles, effects of octupole components in the ring magnets, vertical motion with the resonance 2υy + υx = 61, and effects of ripples in the quadrupole current. With two sextupoles of strength 400-800 kG/m, the turn separation is ~1 cm when the septum radial position is 3 cm. The direction of the beam at the septum can be varied with correction octupoles. A possible advantage of introducing a local bump in the closed orbit near the septum is also discussed.

Keywords

This publication has 2 references indexed in Scilit:

Design of the 200 GeV Slow Extracted Beam at NAL
IEEE Transactions on Nuclear Science, 1969
Nonlinear effects in alternating-gradient synchrotrons
Annals of Physics, 1958