This is cheaper than magnetic, but also simpler to tune since the settings depend only upon beam energy, and not on mass. The ISAC LEBT quadrupoles will be similar to the ISIS quads, with a bore radius of 25 mm. Typical lengths will be 50 mm as opposed to the ISIS standard length of 100 mm. The electrodes are cylindrical in section, with radius 1.145 times the bore radius. The bends are similar to the ISIS bends with an aperture of 38 mm, except that the radius is 254 mm instead of 381 mm, and the shape is spherical instead of cylindrical.
Spherical electrodes give equal focusing in the bend and non-bend directions.
A first order transport code was used for designing the optics. Fractional increases in emittance for individual quads were added in quadrature as well as the emittance increase incurred from an inexact match. This was minimized using a simulated annealing optimization engine. It confirmed that an emittance of 200 p mm-mrad was transported with only slight distortion. The backbone of the transport is FODO periodic with a phase advance of 90 degrees per cell.