2-2 GENERAL DESCRIPTION AND SPECIFICATIONS
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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
2.1 Auto Controller
The Auto Controller is designed to be installed in a standard 19 inch rack mount
cabinet and is shown in
fi
gures 2-1 and 2-2 along with the Keeper, Emission
and Discharge power supplies. The controller communicates with the power
supplies through a RS-485 interface. A front panel switch allows selection of
either local or remote mode operation. The End Hall ion source can be con-
trolled from the front panels when local mode is selected. When remote mode
is selected, the End Hall ion source can be completely controlled via connec-
tions to the rear panel. Alternately, programs selected from the front panel can
be enabled or disabled from the rear panel when remote mode is selected.
Sockets are installed on the rear panel for remote operation using either RS-
232 or an Analog interface.
The Auto Controller also interfaces with up to four mass
fl
ow controllers using
cables that connect to the rear panel. Four relay contacts are also available on
the rear panel if additional positive shut off valves are desired for the gas feed
system. Three of the gas channels are available for use with the ion source,
while gas channel 4 is dedicated to the hollow cathode,
The Auto Controller is connected to the Keeper, Emission and Discharge power
supplies through an RS 485 interface. When the RS-485 interface is not con-
nected the Auto Controller functions as a stand-alone power supply and read-
out for four mass
fl
ow controllers.
2.2 Keeper Power Supply
The Keeper Power Supply is designed to be installed in a standard 19 inch rack
mount cabinet and is shown in
fi
gures 2-1 and 2-2 along with the Auto Con-
troller, and the Emission and Discharge power supplies. The Keeper Power
Supply provides voltage and current to the Hollow Cathode Electron Source
(HCES) for igniting the hollow cathode and keeping the cathode hot enough for
thermionic emission of electrons. This power supply communicates to the Auto
Controller through a RS-485 interface.
Additional information can be found in the individual manual for the Keeper
Power Supply.
2.3 Emission Power Supply
The Emission Power Supply is designed to be installed in a standard 19 inch
rack mount cabinet and is shown in
fi
gures 2-1 and 2-2 along with the Auto
Controller, and the Keeper and Discharge power supplies. The Emission Pow-
