Fermi National Laboratory

Operation Terminology


The magnetron H- source produces short pulses of negative ions. These ions come from plasma formed near a metal surface. A pulse valve introduces hydrogen gas at low pressure into the volume between two molybdenym electrodes: a matchbox-sized, oval-shaped cathode and a surrounding anode, separated by 1 mm and held in place by glass ceramic insulators.

last modified 9/15/2004   email Fermilab
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