Search found 26 matches

by MatthewL
Thu Sep 27, 2018 6:57 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: My progress II
Replies: 40
Views: 11693

Re: My progress II

Jonathan,

There are several places. The best I have found in terms of cost is here https://www.ldsvacuumshopper.com
You can also look at Duniway Stockroom.
Ebay might have better deals though.

-Matthew
by MatthewL
Wed Aug 15, 2018 3:25 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Couple of questions
Replies: 39
Views: 13691

Re: Couple of questions

How have electrically insulated what looks like the electrodes? It seems like they are connected by the aluminum frame. What is the goal here? Obviously fusion can't happen in 20 psi oxygen/nitrogen. Is this just to observe effects of plasma in the magnetic field? Are you planning on putting it unde...
by MatthewL
Tue Aug 14, 2018 1:53 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Couple of questions
Replies: 39
Views: 13691

Re: Couple of questions

What was your pressure?
by MatthewL
Wed Jun 27, 2018 3:25 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Couple of questions
Replies: 39
Views: 13691

Re: Couple of questions

A box is not really necessary. you could just build a single square "plate" about 12" X 12" with hydrocarbons and some lead or slate. This will create a shadow cone shield which should work great. Check the FAQs to find more information.

-Matthew
by MatthewL
Tue Apr 17, 2018 4:24 pm
Forum: Vacuum Technology (& FAQs)
Topic: Can I make my own ConFlat flanges?
Replies: 28
Views: 9734

Re: Can I make my own ConFlat flanges?

It is possible to machine CF flange on a CNC machine, but it really depends on the machine. I am assuming you mean a CNC milling machine. In that case it will ultimately depend on the specific machine. Is it rigged enough, big enough, etc.? I doubt a college workshop would have the proper machine an...
by MatthewL
Mon Apr 16, 2018 8:01 pm
Forum: Vacuum Technology (& FAQs)
Topic: Can I make my own ConFlat flanges?
Replies: 28
Views: 9734

Re: Can I make my own ConFlat flanges?

Ameen, Are you planning to build a fusion reactor or just a vacuum chamber for various experiments? If so, I wouldn't think you would need an 8 inch CF flange unless you already have a chamber you are going to use and need a blank to close one of the ports, or if you are making a massive vacuum cham...
by MatthewL
Fri Mar 23, 2018 12:19 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Helium-3 Fusor Thread
Replies: 15
Views: 7216

Re: Helium-3 Fusor Thread

On your question regarding the use of alumina tubing to increase the voltage capacity of the fusor, are you referring to an HV feedthrough, or do you mean to use the tubing as a lining for the chamber walls (with a gap for gas flow)? If you mean the latter method, do you have plans for the feedthrou...
by MatthewL
Sun Feb 18, 2018 6:17 am
Forum: Vacuum Technology (& FAQs)
Topic: Ion Gauge Controller
Replies: 6
Views: 2320

Ion Gauge Controller

I have been on search for a while to find an ion gauge so I can measure the best vacuum I have been able to pull with my diffstack. Recently I've noticed that there are quite a few the MKS/HPS 919 hot cathode ion gauge controller for sale on eBay, and they are fairly inexpensive ( https://www.ebay.c...
by MatthewL
Wed Dec 27, 2017 9:20 pm
Forum: Images du Jour
Topic: Possibly Fusion
Replies: 8
Views: 2586

Re: Possibly Fusion

I have finally been able to produce another fusion run with detected neutrons. My bubble detector is rated for 26 bubbles/mrem (2.5 bubbles/uSv). It appears that there are two bubbles from this run, although one is a bit smaller that the other. I am not sure what the cause of this is. My run time wa...
by MatthewL
Sun Dec 24, 2017 10:48 pm
Forum: Images du Jour
Topic: Possibly Fusion
Replies: 8
Views: 2586

Re: Possibly Fusion

I have made a couple modifications to deuterium generator so that I can get a more steady supply of deuterium that is also dry. My first modification was changing the copper tube that would hold the LN2 to a thermos, because my LN2 would boil away to quickly, probably allowing moisture to pass throu...