We have designed a family of new Continuous Wave LINear ACcelerators for electron-based industrial, medical, and environmental irradiation applications. Our ten reliable, small, inexpensive high-power modular accelerators will produce beams with energies from 0.6 to 6.0 MeV in increments of 600 keV, each with a current selectable from 0 to 50 mA. We have constructed the critical gun-1 st section model, which has undergone the first beam test. We have achieved beam parameters of 600 keV, 10 mA, and 6 kW and we have demonstrated all the innovations of our initial design [1].

We have studied the electrodynamic and focusing dependence on the coupling slot and coupling cell parameters for circular and rectangular accelerating structures. We find that: (i) for circular structures the coupling slot induced asymmetric electromagnetic fields of the coupling cell have twice the influence on the transverse beam dynamics than those of accelerating cells; (ii) the neighboring cell coupling slot location can influence the beam dynamics from minimally to usefully; and (iii) by increasing the coupling slot area while optimizing its geometry and decreasing the coupling cell area covered by surface currents, the coupling can be increased -15% with little decrease in shunt impedance.