TRANSPORTABLE CHARGE IN A PERIODIC ALTERNATING GRADIENT SYSTEM.

被引：0
|
作者：
Lee, E.P. [1 ]
Fessenden, T.J. [1 ]
Laslett, L.J. [1 ]
机构：
[1] Lawrence Berkeley Lab, Berkeley, CA,, USA, Lawrence Berkeley Lab, Berkeley, CA, USA
来源：
IEEE Transactions on Nuclear Science | 1985年 / NS-32卷 / 05期
关键词：
MATHEMATICAL TECHNIQUES - Numerical Analysis - NUCLEAR REACTORS; FUSION;
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摘要：
A simple set of formulas is derived which relate emittance, line charge density, matched maximum and average envelope radii, occupancy factors, and the (space charge) depressed and vacuum values of tune. This formulation is an improvement on the smooth limit approximation; deviations from exact (numerically determined) relations are on the order of plus or minus 2%, while the smooth limit values are in error by up to plus or minus 30%. This transport formalism is used to determine the limits of transportable line charge density in an electrostatic quadrupole array, with specific application to the low energy portion of the high temperature experiment of heavy ion fusion accelerator research. The line-charge-density limit is found to be essentially proportional to the voltage on the pole faces and the fraction of occupied aperture area.
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