Search found 45 matches

by Alexandru_Calburean
Fri Nov 13, 2015 2:39 am
Forum: Images du Jour
Topic: Alex Calburean Newest Fusor
Replies: 6
Views: 2665

Re: Alex Calburean Newest Fusor

Yeah that makes sense, presumably the vitons aren't significantly permeable? But it does make sense to use copper whenever you can. I'm coming from setups with E-3 torr at best so anything better will be a welcome change even if it might not be the best possible. For my system the diffusion pump wil...
by Alexandru_Calburean
Thu Nov 12, 2015 11:19 pm
Forum: Images du Jour
Topic: Alex Calburean Newest Fusor
Replies: 6
Views: 2665

Re: Alex Calburean Newest Fusor

Thanks for the heads up with the small bake out heaters. I will most likely end up integrating those in my chamber. At the moment I'm trying to focus on repairing a nice Edwards rv5 that is spraying oil from the front cooling fins (most likely a blown gasket). I'll add to this post when I get my dif...
by Alexandru_Calburean
Thu Nov 12, 2015 1:54 am
Forum: Images du Jour
Topic: Alex Calburean Newest Fusor
Replies: 6
Views: 2665

Re: Alex Calburean Newest Fusor

Hey Andrew, I just have to say, thank you for everything, you have been a fantastic help from the beginning when you helped my build i/o circuit to run my spellman to the present date with your great documentation on the machining process. As for your question, yes I will be trying my hand at buildi...
by Alexandru_Calburean
Thu Nov 12, 2015 12:23 am
Forum: Images du Jour
Topic: Alex Calburean Newest Fusor
Replies: 6
Views: 2665

Alex Calburean Newest Fusor

With the help of the forum and Andrew Seltzman's great website (rtftechnologies.org) I've made my own chamber and got it welded. It just arrived a few days ago and I decided that it was a great opportunity for me to become active on the forums again. The machining is documented for the most part on ...
by Alexandru_Calburean
Sun May 18, 2014 4:15 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Is bigger better?
Replies: 8
Views: 3493

Re: Is bigger better?

Russ, I will also say this: my current setup is that of a conflat cross and I find that not even 20kV at ~30 microns will get it to light off. Unless there is something wrong with my data it seems that crosses are much harder to get lit because of the PXD part of Paschen's law and the how that plays...
by Alexandru_Calburean
Sat May 10, 2014 6:17 pm
Forum: Images du Jour
Topic: Alex Calburean - Fusor Update
Replies: 11
Views: 4793

Re: Alex Calburean - Fusor Update

Dennis, Again sorry with the delay in response time, unfortunately it seems that the delay will exist until the school year ends. As for the lead, thanks for the tips, I knew about its toxicity but figured that I am going to sandwich it between steel plates. As for this radiation shielding assembly ...
by Alexandru_Calburean
Sat May 03, 2014 10:31 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Energy Producing Fusor
Replies: 10
Views: 4408

Re: Energy Producing Fusor

Blake, The place that will deliver the most radiant energy is the poissor (virtual anode) itself, but it is impossible to place anything in it for many obvious reasons. The second most hot place in a fusor is then the grid, which again is very difficult to be modified to accept an energy capture dev...
by Alexandru_Calburean
Sat May 03, 2014 8:44 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Energy Producing Fusor
Replies: 10
Views: 4408

Re: Energy Producing Fusor

Blake, The main problem with harnessing the energy from a fusor, radiant or otherwise, is that the input power required is orders of magnitude greater than the output. This Q value of fusors is so low that it is impractical to even try to do what you are suggesting. It is not that you are missing so...
by Alexandru_Calburean
Fri May 02, 2014 10:16 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: About DEMO FUSOR
Replies: 2
Views: 1513

Re: About DEMO FUSOR

As John has said, you need to read, read, and then read some more. To answer your questions, however, the fusor ionizes air atoms and creates cat-ions. Cat-ions being positive are then attracted to the central grid which is biased at several thousand volts negative relative to your fusor shell (oute...
by Alexandru_Calburean
Fri May 02, 2014 10:00 pm
Forum: Images du Jour
Topic: Alex Calburean - Fusor Update
Replies: 11
Views: 4793

Re: Alex Calburean - Fusor Update

Dennis, Sorry for the late reply as school and driver's education has kept me from thoroughly reading and properly responding to address your points. I'll start with the simplest of all; the radiation concerns, I am building a lead box to cover the 2.75 CF cross, but I am leaving the viewport open. ...