Search found 2516 matches

by Chris Bradley
Sun Aug 24, 2014 11:38 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Voltage Metering Issues
Replies: 10
Views: 4654

Re: Voltage Metering Issues

Jerry, I'd suggest the electrical scorch marks showing on his photo, about one resistor-body apart, already indicate Liam is aware of this! :) Liam, together with the other points, bear in mind that these electronic devices, a DVM and the electronic display, 'process' in some way the signals they re...
by Chris Bradley
Sun Aug 24, 2014 4:31 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Small neutron source
Replies: 29
Views: 14124

Re: Small neutron source

Sorry, didn't know the rules don't apply to all The clear purpose of the name rule is to attempt to ensure people are not acting behind pseudonyms. Thomas' identity is one of the most transparent on the forum, and his posts on his experiments are valued and exemplary. But I note he has seen fit to ...
by Chris Bradley
Sun Aug 24, 2014 11:23 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Small neutron source
Replies: 29
Views: 14124

Re: Small neutron source

Dennis. Thomas is well known for describing his excellent work here, and has always given is name 'Thomas Rapp', albeit in two parts, in every post. Thomas, another well crafted execution. Thanks for sharing. One question I have is centred around your 'activation counters'. I have the same Russian t...
by Chris Bradley
Sat Aug 23, 2014 10:21 am
Forum: Vacuum Technology (& FAQs)
Topic: Vacuum Pump Ideas
Replies: 10
Views: 5417

Re: Vacuum Pump Ideas

Another novel Vacuum Pump thread that got similar comments: http://www.fusor.net/board/viewtopic.php?f=10&t=9577 err... I can't see the comparison. George was actually building an idea. Any adverse/wayward comments were your own. I can see that there might be room for some novel sort of diffusion p...
by Chris Bradley
Sat Aug 23, 2014 10:16 am
Forum: Vacuum Technology (& FAQs)
Topic: Vacuum Pump Ideas
Replies: 10
Views: 5417

Re: Vacuum Pump Ideas

I think it is fine for someone to ask about the relative viability of a few ideas before trying them. Could save a lot of time, especially with some of these ideas. You need continuous pumping to operate a fusor. Your carbon adsorption idea will give neither control nor have sufficient effect. Micro...
by Chris Bradley
Fri Aug 22, 2014 6:37 pm
Forum: Vacuum Technology (& FAQs)
Topic: Edwards WRG - Fluctuations?
Replies: 4
Views: 1872

Re: Edwards WRG - Fluctuations?

A Penning trap type (inverted magnetron) gauge works by lighting a plasma and measuring the current across it. Basically, it does what you can do by eye with a fusor - tell the pressure from the way the plasma is behaving! There could be a variety of reasons for what you are seeing, the majority of ...
by Chris Bradley
Tue Aug 19, 2014 5:17 am
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: Now It's Colliding Plasmoids...
Replies: 8
Views: 4317

Re: Now It's Colliding Plasmoids...

Richard Hester wrote:The colliding plasmoid device at MSNW apparently generated enough neutrons with a D-D load to get at least some folks rather excited.
One presumes 'emotionally excited' rather than 'radioactively excited'? :lol:
by Chris Bradley
Mon Aug 18, 2014 6:30 am
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: Now It's Colliding Plasmoids...
Replies: 8
Views: 4317

Re: Now It's Colliding Plasmoids...

This has been around for years and years.

They have, actually, made 'progress'.

But as we know, there are usually glass ceilings involved in fusion efforts and a so called 'proof of concept' can often be got to run, yet strangely there is little progress beyond that 'proof'.
by Chris Bradley
Fri Aug 15, 2014 11:21 pm
Forum: Vacuum Technology (& FAQs)
Topic: Conflat Flange Copper Gasket Orifices
Replies: 1
Views: 1037

Re: Conflat Flange Copper Gasket Orifices

You will find several references to using such orifices on this forum. They are not the cheapest solution to flowing D2, but are probably the best. There is a flow rate calculator on their website too that you can use to size up what you need. Personally to say, I think you are heading in the right ...
by Chris Bradley
Wed Aug 13, 2014 2:03 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Feedthrough arrangements on my epicyclotron prototype.
Replies: 8
Views: 5935

Re: Feedthrough arrangements on my epicyclotron prototype.

Hello Nicolas. I appreciate your interest in my project very much. Regrettably it has been packed up at this point in time, but your enthusiasm reminds me I need to progress things a little, having left them dormant for a while. A few questions: Are you still on the way to write a complete document ...