Search found 355 matches: +vacuum +safety

Searched query: +vacuum +safety

by Finn Hammer
Mon Sep 18, 2017 3:27 pm
Forum: Images du Jour
Topic: Fusor progress, Finn Hammer
Replies: 25
Views: 4115

Fusor progress, Finn Hammer

... surfaces, needless to say, I am anxious to see if they will hold a vacuum. The viewport diametre is 2 1/2" and the feedtrough is a 30kV rated ... is guarded inside the machine chassis, which is grounded, for maximum safety. This is the state of my fusor at this time, 18-09-2017 Cheers, Finn ...
by ian_krase
Sat Sep 16, 2017 10:42 pm
Forum: New User Chat Area
Topic: Other Fuel Cycles
Replies: 4
Views: 1427

Re: Other Fuel Cycles

... cannot do fusion. You need a much higher voltage power supply. Better vacuum is nearly essential and for the sake of your safety you should use a metal shell. (You can do fusion in a glass fusor and some people have, ...
by Dennis P Brown
Thu Aug 24, 2017 10:52 am
Forum: Images du Jour
Topic: 2nd demo fusor run
Replies: 2
Views: 912

Re: 2nd demo fusor run

... needs to use a gasket if one expects to prevent massive leakage - vacuum grease alone isn't going to work very well. This may be causing the high pressure in the bell jar. Also, this is a safety issue since glass on metal can create dangerous stress points. Also, you ...
by Geoffrey Thomas
Mon Aug 21, 2017 5:23 pm
Forum: Images du Jour
Topic: Geoffrey Thomas First Plasma
Replies: 1
Views: 832

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: 2512

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: 2512

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: 1378

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: 2752

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: 770

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: 1673

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 ...