{HEAD ~ a digitally controlled power supply} for providing {TAIL ~ said accelerating voltage}, said supply including means for switching and accelerating voltage between different levels; and 
for providing
{ HEAD ~ a digitally controlled power supply } for providing { TAIL ~ said accelerating voltage } , said supply including means for switching and accelerating voltage between different levels ; and
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH