Ci Ion Source - HP 5973 MSD Hardware Manual

 Hardware Reference
&, LRQ VRXUFH

CI ion source

The CI ion source is similar to the EI source, but only has one part in common with
the EI source — the entrance lens. The single CI filament has a straight wire and a
reflector. There is a "dummy" filament to provide connections for the other wires.
The holes in the ion source (electron-entrance and ion-exit) are very small (0.5
mm), making it possible to pressurize the ionization chamber. Both the source body
and the plate are at repeller potential, electrically isolated from the radiator and the
CI interface tip. The seal for the interface tip ensures a leak-tight seal and electrical
isolation between the CI interface and ion source. Large slots in the drawout
cylinder and ion-source body provide enhanced pumpout for the ion source optics.
CI ion source body
CI filament
CI source heater
assembly
CI interface tip seal
CI interface tip
CI interface cover
Source heater and
sensor cables
Ion focus lens
Entrance lens
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