Search found 41 matches

by Chris Roberts
Thu May 03, 2012 11:03 pm
Forum: Vacuum Technology (& FAQs)
Topic: Baratron
Replies: 12
Views: 4339

Re: Baratron

<t>The only thing that I would mention is the heated Baratrons take hours to warm up and fully stabilize. (4 hours seems to be the norm) The unheated ones are fully ready to go in about 15 minutes. So that depends a lot on how you run your fusor. If you want to have a group come in, power the thing ...
by Chris Roberts
Sun Jul 24, 2011 8:19 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Bell Jar Viable for Fusion?
Replies: 17
Views: 4629

Re: Bell Jar Viable for Fusion?

<t>Hello Jeff,<br/> <br/> I thought I would mention some things we noticed from our attempts at the University of Utah, perhaps it can help you make a decision. You are right that we did get a small amount of fusion from the university's bell jar fusor. However, the bell jar does limit you in a numb...
by Chris Roberts
Thu Nov 18, 2010 9:54 pm
Forum: Vacuum Technology (& FAQs)
Topic: Return of the cheap turbos: TPH-055 Pfeiffer pumps < $100
Replies: 1
Views: 3026

Re: Return of the cheap turbos: TPH-055 Pfeiffer pumps &lt; $100

The original listing for those turbos sold out yesterday, however the seller re-listed ten more.

Item # 370457917984
by Chris Roberts
Wed Oct 06, 2010 7:30 am
Forum: Vacuum Technology (& FAQs)
Topic: Inaccurate vacuum?
Replies: 7
Views: 2141

Re: Inaccurate vacuum?

<t>The simplest way to do a rough calibration on these types of gauges is to hook it up to something like a diffusion pump or anything similar which will pump below the measuring capability of the gauge. Once you know the pressure is below what your gauge can distinguish, just adjust the reading unt...
by Chris Roberts
Fri Sep 03, 2010 5:08 pm
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: Fusion or Explosion
Replies: 44
Views: 11579

Re: Fusion or Explosion

<t>Steven, the biggest reason the sun does not run into that problem is that fusion does not occur on the outer layers of the sun. As per wikipedia:<br/> <br/> "The core is the only location in the Sun that produces an appreciable amount of heat through fusion; inside 24% of the Sun's radius, 99% of...
by Chris Roberts
Mon Aug 30, 2010 11:25 pm
Forum: Images du Jour
Topic: Archived - University of Utah's new demo fusor
Replies: 12
Views: 7265

Re: Archived - University of Utah's new demo fusor - we have fusion!

Awesome, thank you very much Richard. I would like to ask if it is ok that Adam Beehler's name be added as well, as it technically is his fusor, and he was an equal on this project with me.

Thanks again, I am really excited and honored to be part of the club now.

-Chris
by Chris Roberts
Fri Aug 27, 2010 4:23 pm
Forum: Images du Jour
Topic: Archived - University of Utah's new demo fusor
Replies: 12
Views: 7265

Archived - University of Utah's new demo fusor - we have fusion!

<t>Well, I think we finally got it...<br/> <br/> Over the past months, we have made a few changes to our fusor at the U of U. Following the recommendations here on the forum, we made a new inner grid which is much more transparent to incoming ions. At first the grid was silver-soldered together, whi...
by Chris Roberts
Fri Jul 16, 2010 9:32 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: What type of flange?
Replies: 7
Views: 2341

Re: What type of flange?

<t>It looks very similar to an ASA style flange, although there is a chance it could be no standard flange at all. That diffusion pump comes out of an old Veeco leak detector (an MS-9 if I remember correctly) and I know some of those old leak detectors have their own odd choices in flanges and fitti...
by Chris Roberts
Wed Jul 07, 2010 5:15 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Fluorinert Alternative?
Replies: 9
Views: 4512

Re: Fluorinert Alternative?

<r>You could always try reclaimed fluorinert. I bought about a gallon from TMC industries:<br/> <br/> <URL url="http://www.tmcindustries.com/index.html">http://www.tmcindustries.com/index.html</URL><br/> <br/> They primarily offer the service of reclaiming fluorinert that you send in, but they also ...
by Chris Roberts
Fri May 14, 2010 12:31 am
Forum: Fusion --- Past, Present, and Future
Topic: North Korea Claims to Achieve Elusive Nuclear Fusion
Replies: 15
Views: 5601

Re: North Korea Claims to Achieve Elusive Nuclear Fusion

<t>"Fusion break even was an accomplished fact decades ago. It's just that the fuel pellets are inconveniently large."<br/> <br/> Hah, well said indeed! I will have to write that one down. <br/> <br/> I remember reading a story in a book called "The curve of binding energy" where Ted Taylor, one of ...