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INITIAL OPERATION 4-5
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Copyright © 2010 by Kaufman & Robinson, Inc., 1306 Blue Spruce Drive, Unit A, Fort Collins, CO 80524
Tel: 970-495-0187, Fax: 970-484-9350, Internet: www.ionsources.com
vacuum facility pump speed or other process that take place while the
ion source is running.
4.3.1.7 Standby
Press and release the white Enable/Standby button on the front panel of
the Auto Controller. Notice that the yellow Standby LED under the button
turns on and the green Enable LED above the button turns off. The same
LED transition from Enable to Standby also happens on the three power
supplies as the Auto Controller sequences them off.
The auto controller updates the program and saves a new starting gas
fl
ow so the discharge parameters will be reached more quickly the next
time the program is run.
4.3.1.8 Setpoint Adjustment
When the Auto Controller is in the Auto Gas mode, the ion source
parameters can be adjusted before the auto controller is enabled as
described above. When the values are adjusted, the program LED will
fl
ash to indicate that the program has not been saved. The new values
can be acquired by pressing and holding the acquire setpoints button
until the program LED stops
fl
ashing.
Once the controller is enabled, the discharge voltage and current can be
adjusted. Adjusting the discharge current when the auto controller is
enabled also adjusts the Emission current. In this case, the Emission
current becomes a
fi
xed ratio of the Emission current to discharge
current based on the Emission and discharge current setpoints before
the Auto Controller was enabled. For example: The discharge current
and Emission current are set to 4.0 amps and 4.4 amps before enabling
the auto controller; after enabling, the discharge current is adjusted to
5.0 amps and the Emission current will automatically be adjusted to 5.5
amps. Press and hold the acquire setpoints button until the program
indicator stops
fl
ashing to acquire the new setpoints; the old program
values will be overwritten with the new values. Pressing the program
button once before new values are acquired will clear any adjustments
and revert back to the original program.
4.3.1.9 Saving a Program
The
fi
rst step is to select the operating condition. Review the ion source
manual to select an operating condition that is within the range of the