Anode Layer Ion Source v3


 

Overview:

The mass production anode layer ion source was originally developed as an ion source for the Mark 3 fusor, allowing neutron production rates up to 2.4e6n/s (as of fall 2016) and significant improvements in operation stability. The mass production version uses SmCo magnets instead of NdFeB magnets to allow high temperature(~300C) operation / bakeout and use in a hydrogen/deuterium environment without hydrogen embrittlement; NdFeB magnets will disintegrate after absorption of enough hydrogen. The Pole piece and case are CNC machined for closer tolerances and better reproducibility.

An anode layer ion source consists of a positively biased ring shaped anode between two grounded magnetic poles that create a radial magnetic field across the anode ring. Electrons drift above the ring due to the ExB force and ionize gas (either ambient or a controlled flow over the anode ring) which is then directed into a ring shaped beam. Anode layer sources have been used as satellite thrusters, plasma sources, for thin film deposition or surface treatment.

The ion sources are for sale see Startup company website.

 

Mass production ion source (3/25/2017)

 

 

Mass production ion source (3/25/2017)

 

 

Mass production ion source (3/25/2017)

Ion source running in Sam Zeloof's vacuum system

 

Ion Source Specs:

Approximate performance curves of the anode layer ion sources.

  • Voltage: 0-4kV
  • Current: ~2mA
  • Pressure: 1E-4 torr to ~6E-2 torr
 

 

Mass production ion source (3/25/2017)

Diagram of ion source components.

 

Mass production ion source (3/25/2017)

Ion source assembly diagram.

 

Mass production ion source (3/25/2017)

Ion source cross section, front view.

 

Mass production ion source (3/25/2017)

Ion source cross section, rear view.

 

Mass production ion source (3/25/2017)

Ion source case

 

Mass production ion source (3/25/2017)

Set of 4 SmCo magnet rings (1/2"ODx1/4"IDx1/8"Thick)

 

Mass production ion source (3/25/2017)

SmCo magnet installed in case

 

Mass production ion source (3/25/2017)

Anode ring

 

Mass production ion source (3/25/2017)

Retaining shaft clips and nuts installed

 

Mass production ion source (3/25/2017)

Pole piece and vented 10-32 screw

 

Mass production ion source (3/25/2017)

 

 

Mass production ion source (3/25/2017)

 

 

Mass production ion source (3/25/2017)

 

 

Mass production ion source (3/25/2017)

 

 
 

 

 
 

Useful links:

http://www.fusor.net/ Open Source Fusion Research Consortium.

 

 

 


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