Search found 416 matches

by ian_krase
Sat Dec 07, 2019 2:55 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: 30keV Deuteron Source
Replies: 5
Views: 166

Re: 30keV Deuteron Source

I meant the ceramic disk holding the middle element of the einzellense.
by ian_krase
Fri Dec 06, 2019 5:28 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: 30keV Deuteron Source
Replies: 5
Views: 166

Re: 30keV Deuteron Source

I'm a bit unclear on how this very impressive system all goes together.

What's the white ceramic material?
by ian_krase
Thu Dec 05, 2019 5:52 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Steel or aluminum baseplates and other questions
Replies: 7
Views: 333

Re: Steel or aluminum baseplates and other questions

I have a Pyrex cylinder chamber that I use for my sputter coater.

I achieve 1 micron pretty easily, and I think if I could just find my leak I would get to one millitorr. Grease and grinding is necessary to achieve this.
by ian_krase
Sun Nov 24, 2019 12:01 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Demo Fusor Progress
Replies: 10
Views: 744

Re: Demo Fusor Progress

Apropos of being careful with oil burner transformers: I use an oil burner transformer for my system, and today I ran a long (hours) attempt at sputter deposition of aluminum. (I am still trying to ignore logic and common sense and do it without argon). My deposition was put to an abrupt stop when I...
by ian_krase
Sun Nov 24, 2019 11:52 am
Forum: Images du Jour
Topic: putt-putt boat fusion
Replies: 13
Views: 3600

Re: putt-putt boat fusion

As a boy, I once made a "putt-putt boat" from scratch out of wood and 1/8 inch copper tubing. In practice it was more like a "gurgle-gurgle boat", and very slow moving -- I think it was vastly oversized for the "engine" and the boiler was also oversized for the heat source -- at the very least, a mu...
by ian_krase
Sat Nov 23, 2019 5:16 am
Forum: Vacuum Technology (& FAQs)
Topic: questions about vacume tech
Replies: 2
Views: 468

Re: questions about vacume tech

But that's exactly what a vacuum chamber is: a sealed container in which a vacuum is pulled using a vacuum pump.
by ian_krase
Wed Nov 13, 2019 10:40 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Idea for Rhodium Target
Replies: 7
Views: 724

Re: Idea for Rhodium Target

My guess is it's a flux but that implies sintering, which OP didn't mention doing.
by ian_krase
Thu Oct 31, 2019 6:56 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Anode layer ion source. Operation pictures
Replies: 70
Views: 61220

Re: Anode layer ion source. Operation pictures

OK.

What would be the mechanism of failure? Heating the magnets to demagnetization?
by ian_krase
Mon Oct 28, 2019 6:48 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Other types of magnetron ion sources
Replies: 4
Views: 452

Re: Other types of magnetron ion sources

I think "magnetron" has sometimes been used specifically to refer to the microwave generating tube, and sometimes to various devices that use both electrostatics and magnetics such as my sputter magnetron gun, which is related to a penning ion source but does not use penning configuration. I'm talki...
by ian_krase
Sun Oct 27, 2019 10:19 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Other types of magnetron ion sources
Replies: 4
Views: 452

Re: Other types of magnetron ion sources

I'm talking about DC-only penning ion sources. Not a microwave magnetron.