Search found 342 matches: +vacuum +safety

Searched query: +vacuum +safety

by Geoffrey Thomas
Mon Aug 21, 2017 5:23 pm
Forum: Images du Jour
Topic: Geoffrey Thomas First Plasma
Replies: 1
Views: 513

Geoffrey Thomas First Plasma

The chamber I used is an old bioreactor that I converted to hold vacuum. Unfortunately, the bioreactor had all kinds of ports which I plugged ... CO2 laser, but I don't want to use them on this small glass chamber for safety reasons. The pump is a Welch duoseal 1400 that I built from three separate ...
by ian_krase
Sun Aug 20, 2017 10:38 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Addressing HV safety excursions: Oh Yikes what do I do?
Replies: 11
Views: 1571

Re: Addressing HV safety excursions: Oh Yikes what do I do?

I have a star ground with my high vacuum pump as the star point.

Sparks were coming off of the outside of my ion gauge controller, which was sitting on top of my HV power supply.
by ian_krase
Sun Aug 20, 2017 10:40 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Addressing HV safety excursions: Oh Yikes what do I do?
Replies: 11
Views: 1571

Addressing HV safety excursions: Oh Yikes what do I do?

... Transformer, but am trying to get set up with a real HV power supply (one of the Spellman 50kV ones that went for cheap recently). I have my vacuum system, my ion gauge controller chassis, other controller chassis, and my power supply chassis all grounded together with substantial wire. I ...
by ian_krase
Wed Aug 02, 2017 8:30 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Dead Spellman PTV50N200 - where to start?
Replies: 7
Views: 812

Dead Spellman PTV50N200 - where to start?

... of op-amps so I could drive a meter. I had not yet attached it to my vacuum system due to lack of an adequate feedthrough and because to ensure safety (and to fit it on my bench) I needed some careful grounding, etc arrangement -- and ...
by Dennis P Brown
Thu Jun 29, 2017 10:03 am
Forum: Please Introduce Yourself
Topic: Greetings!
Replies: 16
Views: 1844

Re: Greetings!

... in the fusor power section (High voltage section.) Also, one uses a vacuum to get a x-former transformer (really within its winding's) to fill ... proof.) Calculating the stopping thickness of slate for a 80 keV X-ray (safety factor!) is trivial (called google.) Slate can be drilled so bolting ...
by Dennis P Brown
Fri Jun 16, 2017 10:48 am
Forum: Vacuum Technology (& FAQs)
Topic: Leybold D8C, a question
Replies: 3
Views: 464

Re: Leybold D8C, a question

From both a safety and practicality standard point, best to drain and replace the oil. You have no idea ... is appropriate! When changing the oil, use gloves, and dispose of the oil properly (vacuum pump oil can be taken to any place that handles used motor oil.) Follow standard ...
by ian_krase
Mon Jun 12, 2017 3:31 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: First plasma
Replies: 4
Views: 1171

Re: First plasma

Yeah, I imagine you now see why safety shields and/or protection film are so important, especially when applying vacuum for the first time. Most successful large glass elements are either hollow (tubes, cylinders, bell ...
by Dennis P Brown
Mon May 22, 2017 11:08 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Deuterium Accelerator
Replies: 0
Views: 783

Deuterium Accelerator

Since I have been running my fusor vacuum system (no deuterium) every week or so (to high vac) to keep it clean, I decided ... with the fact that I haven't tested/measured any flux yet creates too many safety unknowns (I do have an anti-electron back flow system incorporated at the water ...
by Robert Dwyer
Mon May 08, 2017 6:19 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Robert Dwyer Fusor Progress
Replies: 37
Views: 4396

Re: Robert Dwyer Fusor Progress

Thank you for your reply Dennis. In regards to the vacuum pump, it is a two stage unit, that I measured 9 microns as an ultimate ... reconsider the DIY approach to the feedthrough. As for grounding, I agree, safety is of the upmost importance with this project. A metal cage is in the plan, ...
by Samuel Low
Thu Mar 30, 2017 2:56 pm
Forum: Images du Jour
Topic: Thin-Walled Acrylic Demo Fusor
Replies: 3
Views: 806

Thin-Walled Acrylic Demo Fusor

... had my doubts about 5mm thick acrylic being able to hold the walls in a vacuum, and had extra implosion shielding just in case. Surprisingly, it ... cheap vacuum chamber setups :) Of course, this is bordering on the safety of vacuum chamber design. I wouldn't advise to go any lower in wall ...