Search found 165 matches

by Joe Gayo
Fri Jan 01, 2021 7:56 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Beam on Target Project (BOT 2021)
Replies: 45
Views: 3848

Re: Beam on Target Project (BOT 2021)

Mark,

Have you considered hacking an existing microwave oven's waveguide setup?

I remember reading a BellJar article that discusses this and searched for it after reading your post - http://www.belljar.net/plasma.htm

Joe
by Joe Gayo
Thu Dec 31, 2020 1:15 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: 125kV Fusor
Replies: 13
Views: 1188

Re: 125kV Fusor

@Jim Great minds think alike. I have a lead shielded dark box with a GOS screen and a low light camera specifically for that purpose! I'll post more under a separate heading once the results are worth sharing. I'm currently dealing with some non-ideal performance at 125kV. The output really should i...
by Joe Gayo
Mon Dec 28, 2020 1:54 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: 125kV Fusor
Replies: 13
Views: 1188

125kV Fusor

I have a Glassman PS/WR100N2.5XY6, which is actually built with a 125N2.5 multiplier and limited by the control board. I don't have the exact schematics but Glassman supplies of this form factor are all pretty much the same (the reference designators are different which is annoying). I modified the ...
by Joe Gayo
Tue Dec 22, 2020 9:37 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Progress Update
Replies: 22
Views: 1379

Re: Progress Update

Operational tuning (pressure, etc.) has resulted in a dramatic improvement. 100kV, 200uA ion, 2.5 mA cathode, 2 E-5 Torr, 654359 CPM
by Joe Gayo
Tue Dec 22, 2020 9:34 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Progress Update
Replies: 22
Views: 1379

Re: Progress Update

@Scott

The ion source is a simple discharge source that's been cobbled together, nothing special

@Jon

Thanks. Nice work on the Co-60!
by Joe Gayo
Mon Dec 21, 2020 8:29 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Progress Update
Replies: 22
Views: 1379

Re: Progress Update

The chamber pressure is 1.5E-5 Torr typically during operation. Just as a interesting side note, the results were seen immediately and no wall loading or "conditioning" was required. I will be installing my 125kV power supply in the next few weeks. In addition, I have about a factor of 10 in ion cur...
by Joe Gayo
Mon Dec 21, 2020 8:44 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Progress Update
Replies: 22
Views: 1379

Re: Progress Update

90kV, 190uA, 292k CPM!!
by Joe Gayo
Mon Dec 21, 2020 8:23 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Progress Update
Replies: 22
Views: 1379

Re: Progress Update

85kV, 180uA, 261k CPM!
by Joe Gayo
Mon Dec 21, 2020 6:15 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Progress Update
Replies: 22
Views: 1379

Re: Progress Update

by Joe Gayo
Mon Dec 21, 2020 6:09 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Progress Update
Replies: 22
Views: 1379

Re: Progress Update

Good catch, it was a typo. The post is now corrected. However, the ion source was misaligned for both of the two calibration runs. Taking new data now, and WOW! I'll post results soon. The cathode current is a function of the ion current. It's higher than the ion source current because of secondary ...