Search found 64 matches

by JoeBallantyne
Thu Jul 22, 2021 9:24 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Prototype 180kV Power Supply
Replies: 7
Views: 465

Re: Prototype 180kV Power Supply

So running some numbers based on your post (((180,000 / 10) / 1000) * 21) / 1.414 = 267V RMS. Are you running that beast off a single tap from a 480KV 3 phase line? That would be a nominal RMS voltage of 277V relative to neutral/ground. I'm just wondering how you are getting your line voltage of ~27...
by JoeBallantyne
Sat Jul 17, 2021 3:53 am
Forum: Please Introduce Yourself
Topic: Sean Soleyman's Fusor
Replies: 5
Views: 349

Re: Sean Soleyman's Fusor

The important qualifying data is all on Sean's separate website. The post there is great, and very detailed, but there is pretty much nothing here on fusor.net. I think that folks who want to be added to the neutron club, should post the required information here on fusor.net, so that it is not lost...
by JoeBallantyne
Tue Jul 06, 2021 6:01 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Gayo 2021 Update
Replies: 27
Views: 1881

Re: Gayo 2021 Update

One issue with that kind of neutron shielding up close to the fusor, is that it will likely affect your counts, because some of the neutrons will be reflected back and get counted with the shielding up close. You should probably run some experiments to determine if neutron shielding up close does in...
by JoeBallantyne
Tue Jul 06, 2021 5:58 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Gayo 2021 Update
Replies: 27
Views: 1881

Re: Gayo 2021 Update

I agree with Richard. Shield as close to the source as possible. When I proposed using a single 275 gallon 4' x 4' tote for neutron shielding, my thought was to place it as close to the fusor as reasonably possible so that the fusor was centered on one face of the cube. Depending on the height of yo...
by JoeBallantyne
Sun Jul 04, 2021 8:52 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Operational Fusor Audit
Replies: 30
Views: 2375

Re: Operational Fusor Audit

Given that the criteria was for operational fusors with neutron output sufficient for activation within an hour, I count 9 from this thread, ordered by posts in this thread: Mark Rowley (not explicitly claimed in this thread, but implied from his posts, and evident from other recent posts/videos) Li...
by JoeBallantyne
Wed Jun 30, 2021 12:10 am
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: Physics - the prime science of nature and nuclear physics
Replies: 10
Views: 1005

Re: Physics - the prime science of nature and nuclear physics

It seems to me that the electron with the accompanying repulsive force it creates between atoms, is a central part of the fundamentals. Not an artifact. Life as we know it wouldn't exist with out the electron. The fact that we can't physically see electrons or protons or neutrons, doesn't make any o...
by JoeBallantyne
Sun Jun 27, 2021 12:03 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Apparatus for Making a Deuterated Target
Replies: 13
Views: 1798

Re: Apparatus for Making a Deuterated Target

Very nice work Mark.

It would be cool to see a video of that tube furnace in operation.

Joe.
by JoeBallantyne
Sat Jun 26, 2021 10:32 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Gayo 2021 Update
Replies: 27
Views: 1881

Re: Gayo 2021 Update

The Phoenix folks had some pictures of their lab setup on their site a few years back. They were using a stack of the 4'x4' HDPE caged liquid containers full of water for neutron shielding. Behind that they had a wall of 2'x2'x6' concrete ecology blocks. One well positioned 4'x4' 275 gallon tote ful...
by JoeBallantyne
Thu Jun 24, 2021 7:44 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Gayo 2021 Update
Replies: 27
Views: 1881

Re: Gayo 2021 Update

A few years back I went to the Phoenix guys website. (Company started by Greg Pfeiffer - who also started SHINE.) See https://phoenixwi.com/neutron-generators/dd-deuterium-deuterium-neutron-generators/ They ship neutron sources that are DT and DD based. I calculated their Q based on the then publish...
by JoeBallantyne
Thu Jun 24, 2021 6:58 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Gayo 2021 Update
Replies: 27
Views: 1881

Re: Gayo 2021 Update

Amazing work Joe! Frank, Joe has spent years doing research, simulations, and real engineering to improve his Q. If I were him, my answer to your question of why his Q is 2 orders of magnitude better, would be simply: Good ideas properly implemented with careful engineering. I don't think he is nece...

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