Mark 3 Ion Injector |
Overview: Prototype ion injector design for the Mark 3 IEC fusion reactor. This
ion injector is designed to be mass producible with commonly available
parts and require only minimal fabrication. Injector will produce a concentrated
beam of deuterium ions and operate at ambient chamber pressure. Filament
will be held at +5kV and extractor cone will be grounded. |
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Thermionic Anode Components: Thermionic anode will release electrons, ionizing deuterium in close proximity. Deuterium will then be accelerated through extractor cone into fusor. |
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Electrical Feedthrough: 316 ss wire is formed to support platinum filament and pass though a 1/8" OD 2 bore high alumina rod cut to 3/8" length. |
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Interior Support: 1/4" OD 1/8" ID High Alumina tube is cut to 3/8" length and slotted at one end to 1/8" depth. Filament feedthroughs lock into slotted section, preventing rotation. |
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Injector Rear Bulkhead: Rear bulkhead consists of a 1/2" ID stainless steel hole finishing cap. Bulkhead mounts to ion injector body, centering filament. |
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Injector Rear Bulkhead: 2 bore HA feedthrough passes through bulkhead insulating the filament leads. |
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Exterior Support: 1/4" OD 1/8" ID High Alumina tube is cut to 2/8" length and slotted at one end to 1/8" depth. Filament feedthroughs lock into slotted section, preventing rotation. |
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Exterior Support: Filament supports are aligned with slot. |
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Exterior Support: Filament supports are bent at right angles, locking into external support. Interiors and exterior supports are compressed against bulkhead disk, firmly holding assembly in place. |
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Laser Cathode: Burnt out laser cathode is adapted as high voltage filament feedthrough. Existing cathode is removed, feedthrough terminals are sanded, and sealing edge is polished. All external ports are sealed off. |
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Laser Cathode: Filament connectors will attach to laser cathode connectors. |
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NW-40 Flange: NW-40 long weld stubs will contain ion injector and mount to fusor shell. |
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Ion Injector Body: Ion injector body consists of a 0.75" OD by 0.5" ID high alumina tube cut to 1.5" long. Extractor cone is constructed out of a swagelok fitting captured in a second bulkhead feedthrough. |
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Ion Injector Components: Laser cathode, filament assembly, injector body, and extractor cone ready for assembly. |
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Ion Injector: Deuterium ion injector is assembled and mounts to laser cathode header. |
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Ion injector: Injector assembly mounts in NW-40 long weld stub. |
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Ion Injector Aperture: Deuterium ions will exit though extractor cone, and aimed at the focal point of the accelerated plasma. |
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Useful links: http://www.fusor.net/ Open Source Fusion Research Consortium. |
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By attempting to reproduce any experiments or devices listed on this domain in part or in whole, you agree to hold me harmless against any lawsuit or liability. Copyright © 1998 - 2005 by Andrew Seltzman. All rights reserved. |
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Contact me at: admin@rtftechnologies.org |