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The starting point—an old double plasma vacuum chamber, at the start of the project
February 2005.

Inside the chamber. Colored areas on the steel surfaces shows off where they got heated by the filaments to very high temperatures

Vacuum being tested—with a smaaaaall turbo, but it worked, all the way down to
10-6 mbar.

Last updated: March 08

The Construction of the Njord device at Aurolab 2005-2006

 


Text Box: The anode chamber

Text Box: Inside the anode chamber, the filament rack pulled out.

Text Box: Kjell-Arne rewiring the filaments

Text Box: Filaments of anode chamber rewired              Text Box: Closeup of filaments in the back wall of the anode chamber

Text Box: Filament racks being remounted

Text Box: Anode chamber ready to mount. It has been refitted with a smaller region of transparent grid to let ions flow from the anode chamber to the main, or vice versa, depending on the independent biasing of the chamber and the grid.

Text Box: Anode chamber being inserted into the main chamber.

Text Box: After a long wait, dome made to order finally arrived. Smaller ports were welded on in-house, and the dome is now ready for mounting.

Text Box: Dome being mounted. Kjell-Arne doing the last preparations

A last precaution to save the turbo from debris. Not good for pumping speed, but better than having it crash  from pieces  falling into it.

 

Text Box: Antenna system with tuning box mounted. This system was built at Australian National University, and is a replica of the system at Chi Kung, operated by Christine Charles

Text Box: With the pyrex tube inside, ready to be closed and pumped down

Text Box: Instrumentation racks. Labview interface for pump and pressure control, and for data acquisition, as well as diagnostics electronics were all developed in-house by Inge Strømmesen, the engineer responsible for the technical support at the Aurolab

Text Box: Njord bottle nearly ready to go. Note the bigger pump this time.

Text Box: Christopher Watts shipped a Henry RF amplifier he had in store in New Mexico, and helped set it up. The amplifier can provide up to 5 kW CW output power.

Text Box: Christopher and Torfinn doing the first plasma tuning


Text Box: A happy group of people at the milestone (from left): RF specialist Torfinn Roaldsen (helpful preparing an tuning the RF system, and lending a helping hand with power supplies and mechanical work), Inge Strømmesen (head of technical support, control and monitoring systems and everything around the lab), Åshild Fredriksen (Project PI and photos), Dr. Christopher Watts; University of New Mexico (giving us the RF amplifier, and helping with the initial operation and the last preparations to make plasmas), Socrates student from University of Milano-Bicocca Giulio Tribulato (who later did the first plasma characterization of Njord). Mechanical engineer Kjell-Arne Willumstad, who did the major part of the mechanical work in assembling the device (as can be seen in the previous photos was not present that day.