Search found 193 matches

by MarkS
Tue Aug 05, 2008 10:35 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Construction Questions
Replies: 4
Views: 2131

Re: Construction Questions

<t>Fusion has mostly been done in stainless steel vessels, though some have used copper, glass (with electron beam shielding), and I believe someone has used an aluminum chamber as well.<br/> <br/> Grids must be constructed from a conductive metal which can handle lots of heat. Many people use steel...
by MarkS
Mon Aug 04, 2008 11:10 pm
Forum: Vacuum Technology (& FAQs)
Topic: Buying Vacuum Components From Big Companies
Replies: 4
Views: 2084

Re: Buying Vacuum Components From Big Companies

LDS is by far the best for small simple orders, and they tend to have sales on flanges all time. Shipping from Florida to DC usually runs me about $9

www.LDSvacuum.com
by MarkS
Fri Aug 01, 2008 6:25 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Frank Sanns "Pillar of Fire" IEC Fusion Patent App Published
Replies: 18
Views: 4007

Re: "Pillar of Fire" IEC Fusion Patent App Published

This is similar to an idea I had awhile ago but I buried away in the back of my head. I think your patent is very interesting and I can't wait to see what comes of it.
Cheers on the patent!
by MarkS
Mon Jul 28, 2008 3:39 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Feedthrough application
Replies: 5
Views: 3300

Re: Feedthrough application

<r>My feeling is that the 2 on the right would perform best because they are sinusoidal and ceramic, and they could be easily TIG welded / Brazed into place either directly on the chamber, or on a flange like this:<br/> <br/> <URL url="http://vacuumshopper.stores.yahoo.net/158odtube.html">http://vac...
by MarkS
Fri Jul 25, 2008 2:28 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Fusor Progress
Replies: 7
Views: 3364

Re: Fusor Progress

View ports are a critical feature. While qualitative, they do let the user know key changes in the plasma, and can let you know if something goes wrong, ie grid melting.

Good Luck!
by MarkS
Thu Jul 24, 2008 1:10 pm
Forum: Images du Jour
Topic: Archived - Frank Sanns Levitated Pit Fusor
Replies: 20
Views: 10493

Re: Archived - Levitated Pit Fusor

Interesting experiments! In photo #2 on the left side of the bowls, is that infrared light, or is there a green light showing on the bowls. In photo #3 what are the glowing specks?
by MarkS
Thu Jul 24, 2008 2:53 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Questions about power supply voltage and amperage measurement
Replies: 6
Views: 2469

Re: Questions about power supply voltage and amperage measurement

Pressure can be measured from the voltage and current flow, its the biases for how ion gauges work. I doubt that measuring the pressure would work at micron levels because ion gauges typically don't work at "higher" pressures.
by MarkS
Tue Jul 22, 2008 1:50 am
Forum: Vacuum Technology (& FAQs)
Topic: trouble locating a suitable vacuum chamber
Replies: 18
Views: 4927

Re: trouble locating a suitable vacuum chamber

<r>Cheap is all relative, I've seen TIG welder starter kits go for $175 at a sale, and to me a tool and skill like welding tends to be worth its weight in gold. If you're patient with with ebay you may have something come up. Remember to search words like "conflat", "kf", "qf", etc... Also look at v...
by MarkS
Mon Jul 21, 2008 10:41 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Picking a geiger counter
Replies: 9
Views: 2598

Re: Picking a geiger counter

<r>Blackcat Systems is a company which makes cheap cheap cheap gieger counters, and gives a modest student discount. The catch is that you have to use a computer to operate them. I think my GM-10 w/9pin serial port was $135, and it works really well.<br/> <br/> <URL url="http://www.blackcatsystems.c...
by MarkS
Wed Jul 09, 2008 10:08 pm
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: What about the T-T or D-T side reactions?
Replies: 11
Views: 4047

Re: What about the T-T or D-T side reactions?

Doubted they would have a measurable effect. I suppose you could also say a few million needles, in a literal mountain of hay.