RF input panel CAD (5/25/2007)

RF panel CAD

Panel GCODE

RF amplifier input panel (5/25/2007)

Aluminum panel is milled to mount RF input, output and power connectors.

ECRF drive amplifier (5/25/2007)

Connector panel is mounted on amplifier replacing original panel.

ECRF drive amplifier (5/25/2007)

Modified amplifier.

Amplifier mounting block CAD (5/25/2007)

Cad of mounting block to attach amplifier to frame.

Left Mounting Block GCODE

Right Mounting Block GCODE

Amplifier mounting blocks (5/25/2007)

HDPE blocks attach amplifier to frame.

ECRF amplifier mounted (5/25/2007)

Amplifier mounts to reactor frame.

Power supply mounting plate CAD (5/25/2007)

Cad of mounting plate to attach power supply to frame.

Mounting plate GCODE

ECRF amplifier power supply (5/25/2007)

26V at 25A power supply will power ECRF amplifier and grid cooling loop heat exchanger.

ECRF amplifier power supply (5/25/2007)

Mounting plates attach to the back of the power supply.

ECRF preamplifier (9/10/2007)

Boosts signal from VCO to 1W output

Directional coupler mount CAD (9/10/2007)

Coupler mount GCODE

Directional couplers (9/10/2007)

Measures forward and reflected power to each ion injector. Directional coupler couples -40dB.

Directional couplers (9/10/2007)

Attached to mounting plate.

50 Ohm Load with Coupler (2/25/2006)

Coupler is attached to 50 Ohm load so that input frequency can be monitored and verified.

Frequency Counter (2/25/2006)

Displays input frequency from 1MHz-3GHz.

ECRF Input Panel (2/16/2006)

ECRF input panel is machined and assembled.

Type N Connector Cables (2/16/2006)

RG-142 Teflon dielectric cables are used for low loss and high SWR tolerance without dielectric breakdown.

ECRF Input Panel (3/3/2006)

ECRF input panel is mounted on reactor.

ECRF driver test (9/10/2007)

Main amplifier attached to reactor frame.

Splitter disconnected (9/30/2007)

The input splitter and output combiner are disconnected, separating the two amplifier boards.

RF output connected (9/30/2007)

The N connectors on the front panel of the amplifier are connected to the outputs of the amplifier board.

ECRF pre amp mounting plate (10/28/2007)

Mounts pre amp to reactor frame.

Pre amp mount GCODE

ECRF pre amp mounting plate (10/28/2007)

ECRF detector (10/13/2007)

Detector measures output from directional coupler. Through the -40dB directional coupler the system has a sensitivity of 1/40 V/W on passing through the coupler. At 880MHz the system will have a sensitivity of 1/125 V/W.

ECRF detector mounting plate (10/13/2007)

Mounts a stack of 4 detector assemblies to reactor frame.

Detector mount GCODE

ECRF detector mounting plate (10/13/2007)

Mounts a stack of 4 detector assemblies to reactor frame.

ECRF detector stack (10/28/2007)

Stack of 4 detector assemblies with right angle elbows.

ECRF power splitter (12/3/2007)

Dual power splitter/isolator for ECRF injector system.

Splitter GCODE

ECRF power splitter (12/3/2007)

Casing, type N connectors, dual power splitter/isolator, sma connectors.

ECRF power splitter (12/3/2007)

100w terminating resistors absorb power reflected back into the splitter assembly.

ECRF power splitter (12/3/2007)

Coax wiring to termination resistors, SMA nd type N connectors.

ECRF power splitter (12/3/2007)

Directional couplers mount to splitter assembly

(this splitter assembly reflected too much power and was subsequently removed)

Recessed mounting block (10/28/2007)

Mount amplifier to reactor frame.

Recessed mounting block GCODE

Recessed mounting blocks (10/28/2007)

Mount amplifier to reactor frame.

ECRF amplifier recessed (10/28/2007)

Amplifier recessed into reactor frame for more compact design.

ECRF quarter wave splitter (1/20/2008)

High power splitter (800-980MHz range) replaces splitter board that had high reflection.

Power splitter mount (2/15/2008)

Power splitter mount and aluminum clamp

Directional coupler mounting plate (2/14/2008)

Mounting plate attaches directional couplers to reactor frame. The use of SMA connectors allows the assembly to be positioned higher, thereby reducing space required.