Ions extracted with a 40,000 Volt electric field, move
from the source (a) at a speed of more than 450 miles per second inside
of a vacuum beam line to the left, then into an assembly of four magnets
and two electrostatic lenses. This device is called a "recombinator
injector" because it serves to separate the negative ions by
mass and remove ions with masses outside of the range of the carbon
isotopes (A = 12 - 14 atomic mass units) before recombining the now
mostly pure negative carbon ions for injection into the next stage,
the accelerator. |