Deflection control structure has holes through which {HEAD ~ the beams} may pass with {TAIL ~ a set} of x y deflection electrodes associated with each of the holes for x y control of the trajectory of each of the beams 
pass with
Deflection control structure has holes through which { HEAD ~ the beams } may pass with { TAIL ~ a set } of x y deflection electrodes associated with each of the holes for x y control of the trajectory of each of the beams
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH