Search found 204 matches

by MSimon
Thu Jun 24, 2010 5:11 am
Forum: Fusion --- Past, Present, and Future
Topic: [news] Extreme DIY: Building a homemade nuclear reactor in NYC
Replies: 31
Views: 10322

Re: [news] Extreme DIY: Building a homemade nuclear reactor in NYC

<t>I'm tracking this and it HAS gone viral. <br/> <br/> Eight or ten major traffic sites have picked it up. Secondary sites are starting to come in. <br/> <br/> Most of the articles mention fusor.net<br/> <br/> Expect a flood of inquiries. BTW some of the articles also mention Tom Ligon. I have give...
by MSimon
Fri Feb 19, 2010 12:00 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: A homebrew vacuum conductance valve for in tank use
Replies: 18
Views: 4625

Re: A homebrew vacuum conductance valve for in tank use

You might consider PWMing your motor supply and keeping the voltage at 12V. You get the torque without the speed.
by MSimon
Sat Mar 21, 2009 10:38 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: History - Of dekatrons, and ships and kings and sealing wax.
Replies: 7
Views: 3033

Re: History - Of dekatrons, and ships and kings and sealing wax.

My favorite from that era was a HP counter (I think) with 10 neon lights for each decade.

You could actually read the frequency without hetrodyning with a BC-221.
by MSimon
Mon Feb 02, 2009 8:35 am
Forum: Images du Jour
Topic: Archived - Example of magnet effects on plasma
Replies: 35
Views: 12470

Re: Archived - Example of magnet effects on plasma

<r>Current loop simulator:<br/> <br/> <URL url="http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/curloo.html"><LINK_TEXT text="http://hyperphysics.phy-astr.gsu.edu/hb ... urloo.html">http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/curloo.html</LINK_TEXT></URL><br/> <br/> 30 amp turns in a 0.1...
by MSimon
Thu Jan 29, 2009 1:05 am
Forum: Images du Jour
Topic: Archived - Example of magnet effects on plasma
Replies: 35
Views: 12470

Re: Archived - Example of magnet effects on plasma

<t>I did some BOE calculations and figured a small voice coil operated valve could work if you could keep it sufficiently shielded from the magnet/electromagnet fields. Good operating force and response times in the sub mS range. If you tied it in with a pressure sensor of the appropriate speed you ...
by MSimon
Thu Jan 29, 2009 12:39 am
Forum: Images du Jour
Topic: Archived - Example of magnet effects on plasma
Replies: 35
Views: 12470

Re: Archived - Example of magnet effects on plasma

<t>The difference between this device and a Polywell are two and they are significant.<br/> <br/> 1. Permanent magnets. They will have a plasma burn where the field gradient is zero (at the pole faces). Thus high electron/ion losses precluding wiffle ball formation. <br/> <br/> 2. The magnets have n...
by MSimon
Wed Jan 28, 2009 8:04 am
Forum: Images du Jour
Topic: Archived - Example of magnet effects on plasma
Replies: 35
Views: 12470

Re: Example of magnet effects on plasma

Outstanding bit of work on the cheap!
by MSimon
Tue Jun 24, 2008 3:45 am
Forum: Fusion --- Past, Present, and Future
Topic: Lastest teaser on the Pollywell
Replies: 37
Views: 10281

Re: Lastest teaser on the Polywell

Well that was a pretty safe bet.

A continuous run is going to require some hefty power supplies and magnet cooling.

I estimate the cost of buying all the eqpt new at $5 to $25 mill. No doubt scroungers with a very big garage could do it for less.
by MSimon
Tue Jun 24, 2008 3:39 am
Forum: Fusion --- Past, Present, and Future
Topic: Lastest teaser on the Pollywell
Replies: 37
Views: 10281

Re: Lastest teaser on the Polywell

"please continue to support it but direct your excitement to the substance of the science, not to the salespitch."

As I recall the whole fusor thing got started because of a Bussard sales pitch.

There are still different levels of buy in.
by MSimon
Tue Jun 24, 2008 3:31 am
Forum: Fusion --- Past, Present, and Future
Topic: Lastest teaser on the Pollywell
Replies: 37
Views: 10281

Re: Lastest teaser on the Polywell

<t>Frank S. wrote:<br/> > Carl,<br/> > <br/> > You have made me think about why I have such a knee jerk reaction to posts of polywell and you have hit on it precisely. The science interests me and it is as valid as any other approach out there. <br/> > <br/> > My negative reaction is precisely becau...