11
Opera�ng the IG2 With the
32-175 Controller
32-175 Front Panel Controls and Meter
•
Main power ON / OFF
: Turns the 32
-
175 ON and OFF
•
Beam voltage ON / OFF / Remote Switch
: Turns the beam voltage ON, OFF and on and off
remotely.
In the remote mode TTL low (or shorted relay contacts) = Beam ON
•
Beam Voltage Knob
:
Sets
the Beam Voltage to 500, 1000, 1500, or 2000 volts DC. The Beam
voltage accelerates the ions to the target.
•
Focus
:
Adjusts the size of the ion beam.
•
Emission Poten�ometer
:
Sets the filament current, resul�ng emission current is displayed on
the emission meter.
•
Emission Meter:
D
isplays the emission current, 25mA nominal.
Ini�al Out
-gassing of the 04-165 Ion Source
IG2 packages and 04-
165 Ion Sources newly purchased from RBD have had ini�al outgassing
procedure performed. If the 04-165 Ion Source is up-to-
air for an extended period of �me a�er
ini�al outgassing, follow the outgassing procedure, no�ng that wait �mes may be reduced by 50%.
NOTE: Before outgassing the 04-165 ion source the vacuum chamber needs to be baked out to
remove water vapor from the ion source.
If at any time during out
-gassing the emission meter starts to climb rapidly, turn the Emission
Potentiometer down until the emission current stabilizes. The
n resume the procedure.
1.
With the 32
-
175 main power switch OFF, make sure that the Emission Poten�ometer is fully
CCW. The Emission Poten�ometer controls the filament current. 0 to 10 turns correspond
s
to 0 to 2.0 amps of filament current.
2.
Set the Beam Voltage Knob to 500 V and the Beam Voltage Switch to OFF.
3.
Turn the 32
-
175 main power switch ON.
4.
Slowly turn the Emission Poten�ometer CW typically 6 to 7 turns un�l you have 1 to 2 mA of
emission current.
Keep turning the poten�ometer un�l the emission ac�vates
.
Watch the
meter –
if it spikes, turn down immediately until
you are back between 1 and 2 mA.
5.
Wait for 10 to 20 minutes then turn the Emission Poten�ometer CW un�l you have 5 mA of
emission current.
6.
Wait 10 to 20 minutes and then increase the Emission Poten�ometer un�l you have 10 mA of
emission current.