Acceleration units for the Induction Linac Systems Experiments (ILSE)

The design of a high-current heavy-ion induction linac driver for inertial confinement fusion is optimized by adjusting the acceleration units along the length of the accelerator to match the beam current, energy, and pulse duration at any location. At the low-energy end of the machine the optimum is a large number of electrostatically focused parallel beamlets, whereas at higher energies the optimum is a smaller number of magnetically focused beams. ILSE parallels this strategy by using 16 electrostatically focused beamlets at the low end followed by four magnetically focused beams after beam combining. Descriptions are given of the electric focusing section, the magnetic focus accelerator, the induction cores and pulsers, and the ILSE alignment systems