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ID 20753
file
creator
NDC
Physics
abstract
We propose a possible scheme to realize three-dimensional laser cooling of stored and circulating ion beams in a storage ring. The idea is based on creating a linear synchrobetatron coupling such that the longitudinal laser cooling effect can be extended to transverse degrees of freedom through the coupling. The idea of indirect transverse laser cooling was recently studied, employing a so-called coupling cavity as a source of the forced coupling. In the present paper, we theoretically explore the possibility of using natural dispersion of a ring as an alternative coupling source, setting an ordinary rf cavity at a position with nonzero dispersion. It is found that the effect of the dispersion-induced coupling is essentially equivalent to that of the coupling cavity, and that the coupling can be considerably enhanced under resonance conditions. The cooling rates of longitudinal and transverse modes are evaluated. An approximate formula is derived to estimate an optimum value of dispersion at the cavity location. The validity of the present theoretical predictions is confirmed by tracking simulations that demonstrate effective transverse laser cooling.
journal title
Physical Review E
volume
Volume 50
issue
Issue 6
start page
4982
end page
4996
date of issued
1994-12
publisher
The American Physical Society
issn
1063-651X
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 1994 The American Physical Society
relation url
department
Graduate School of Advanced Sciences of Matter