Search found 117 matches

by Michael Bretti
Wed Nov 22, 2017 5:03 pm
Forum: Images du Jour
Topic: New High Vacuum Equipment
Replies: 9
Views: 3329

Re: New High Vacuum Equipment

Thanks for the comments and input. Over the past couple of months since my initial post, I have been doing a lot of CAD designing and project planning for my endeavors. While this chamber certainly has the potential for very large neutron yields (by amateur fusor standards), this chamber will be ded...
by Michael Bretti
Sat Aug 12, 2017 3:29 am
Forum: Images du Jour
Topic: New High Vacuum Equipment
Replies: 9
Views: 3329

New High Vacuum Equipment

Just wanted to share some pictures of my newly acquired high vacuum equipment that I have recently obtained. As mentioned in a couple of prior posts, I will be working on constructing a rather large, multi-purpose high vacuum system to accommodate a wide range of experiments, ranging from fusor appl...
by Michael Bretti
Fri Aug 04, 2017 7:44 pm
Forum: Vacuum Technology (& FAQs)
Topic: Conductance Calculations for Gate Valve to Chamber Coupling
Replies: 3
Views: 1712

Re: Conductance Calculations for Gate Valve to Chamber Coupl

Richard Hull, Thanks for the insight! It's good to know that fusors do not need crazy throughput or anything, especially once running with deuterium. While this chamber will not be used primarily or solely for fusor work, I still would like to do some fusor related research with it. I hope to eventu...
by Michael Bretti
Fri Aug 04, 2017 2:13 am
Forum: Vacuum Technology (& FAQs)
Topic: Conductance Calculations for Gate Valve to Chamber Coupling
Replies: 3
Views: 1712

Re: Conductance Calculations for Gate Valve to Chamber Coupl

My apologies, I was reviewing the numbers and I believe my estimate of 616L/s from the table is wrong - it seems like the second example they used under the table, which I was referring to, was also wrong. For a 2" ID, the conductance should be somewhere between 98.56L/s and 221.70L/s - definitely n...
by Michael Bretti
Fri Aug 04, 2017 12:33 am
Forum: Vacuum Technology (& FAQs)
Topic: Conductance Calculations for Gate Valve to Chamber Coupling
Replies: 3
Views: 1712

Conductance Calculations for Gate Valve to Chamber Coupling

I just wanted to ask a few questions regarding conductance calculations and estimates for possible setups for my new vacuum chamber. I figured I'd run it by the group to help verify (or refute) my estimates and assumptions, whose members are far more experienced than I am, before I actually go out p...
by Michael Bretti
Wed Aug 02, 2017 9:07 pm
Forum: Images du Jour
Topic: Lunchtime Demo Fusor
Replies: 3
Views: 1661

Re: Lunchtime Demo Fusor

Thanks for the add! I forgot that there was a plasma club in addition to a neutron club. Even though it is pretty trivial compared to a fully neutron producing system, it is really encouraging to push forward with more advanced experiments, and hopefully I will have the chance to join the neutron cl...
by Michael Bretti
Wed Aug 02, 2017 2:46 am
Forum: Images du Jour
Topic: Lunchtime Demo Fusor
Replies: 3
Views: 1661

Lunchtime Demo Fusor

Late last year, maybe in October or so, I got around to building a very quick and dirty demo fusor with some junk and spare parts lying around the lab I work at over a couple of lunch breaks. I originally found a small stainless vacuum chamber that was thrown away in the university tech docks trash ...