Fusor Construction and Start

Current images of fusor efforts, components, etc. Try to continuously update from your name, a current photo using edit function. Title post with your name once only. Change image and text as needed. See first posting for details.
Post Reply
Erik smith
Posts: 103
Joined: Thu Jan 09, 2014 12:05 am
Real name: Erik smith

Fusor Construction and Start

Post by Erik smith » Tue Jul 26, 2016 10:32 pm

Over the past two years I have been collecting parts for my fusor. Due to other interests and work I have not really had time to build. However, I have decided to start up again. Here are the parts collected over the past years...

The first image is my diffusion pump. It came out of an Alcatel ASM-10 helium leak detector. It has an ISO 80 inlet flange and an NW 20 outlet flange. The pump should require a 6cfm vacuum pump and at least a pressure of 50 microns for it to start.
Image

The next picture is my vacuum pump. Its a 2 stage, 4 cfm pump with an ultimate vacuum of 3 microns. I will take off the flare fittings then replace it with an NW 25 flange and hose.
Image

ISO-80 to 2.75" conflat adapter and o-ring.
Image

The main chamber consists of a conflat 6 way cross attached to a 3 way. The 3 way cross adds extra ports, allowing the gas to be injected further away from the pump and grid.
Image

The bellows and gate valves will allow throttling of the chamber. The butterfly valve will just be used to isolate the chamber from the pumps.
Image

The up to air valve and a Mastercool thermocouple gauge.
Image

30kV feedthrough.
Image

The gas system will contain of a CO2/Argon regulator with a 5 micron copper orifice.
Image

User avatar
Dennis P Brown
Posts: 1716
Joined: Sun May 20, 2012 2:46 pm
Real name: Dennis P Brown
Location: Glen Arm, MD

Re: Fusor Construction and Start

Post by Dennis P Brown » Wed Jul 27, 2016 11:31 am

Nice; now the issue is putting it all together and testing it for high vacuum! Really the fun part but also a major milestone for your goal of making a fusor.

Erik smith
Posts: 103
Joined: Thu Jan 09, 2014 12:05 am
Real name: Erik smith

Re: Fusor Construction

Post by Erik smith » Wed Aug 17, 2016 2:55 am

I ran the fusor today in demo mode using a corkscrew grid and flyback power supply. The voltage is around -5kV and the current is around 1mA. As of now, I am waiting for the mineral oil to arrive for my 50kV XRT.

Image
Image

User avatar
Richard Hull
Moderator
Posts: 11610
Joined: Fri Jun 15, 2001 1:44 pm
Real name: Richard Hull

Re: Fusor Construction and Start

Post by Richard Hull » Wed Aug 17, 2016 4:20 am

Superb demo system, Erik! I have placed your name in the Plasma Club.

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
Retired now...Doing only what I want and not what I should...every day is a saturday.

Erik smith
Posts: 103
Joined: Thu Jan 09, 2014 12:05 am
Real name: Erik smith

Re: Fusor Construction and Start

Post by Erik smith » Wed Aug 17, 2016 8:23 pm

Here is my 50kV XRT. I have yet to install my 100 half wave rectifier, or my 60kΩ 220M resistor.

Image
Image
Image

Erik smith
Posts: 103
Joined: Thu Jan 09, 2014 12:05 am
Real name: Erik smith

Re: Fusor Construction and Start

Post by Erik smith » Mon Aug 22, 2016 7:51 pm

Here a few pictures from 2 weeks ago. Since then a lot more parts came in. The only thing I still have to assemble is the drying stack for my PEM generator. I am still waiting for my neutron detector to arrive.

Image

Image

Image

Erik smith
Posts: 103
Joined: Thu Jan 09, 2014 12:05 am
Real name: Erik smith

Re: Fusor Construction and Start

Post by Erik smith » Sat Sep 03, 2016 10:56 pm

The chamber is almost done. all I have to is create the grid.
Image
Image

Post Reply