PPT Slide
Longitudinal capture at low frequency
High-power low-frequency power supplies (en route - MCC)
High-gradient low-frequency cavities (idem)
Ionization cooling (idem)
Efficient re-capture at linac frequency (idem for simulations)
Long-pulse (200 ns) large-aperture induction cells and power supplies (LBL RKTBA R&D also CEA/DAM PIVAIR)
Solenoids inside cavity structures - beam dynamics?
Earlier transition to quadrupole focussing?