Leak valves and mass flow controllers

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Sasha Cohen
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Leak valves and mass flow controllers

Post by Sasha Cohen » Fri Mar 13, 2015 2:47 am

Hi Fusor.net,

I am a high school student in the process of designing and constructing a cylindrical fusor. My design is comprised of a 10.25" diameter x 8" high Pyrex cylinder terminated by two aluminum plates on which I will be attaching the voltage connections (isolated from the aluminum with ceramic tubing), a vacuum gauge, and vacuum port. The aluminum plates themselves are not charged; I will use two concentric wire grids. My question is in regard to the nature of admitting deuterium into the chamber. How would you suggest I do this? I've been looking at this leak valve (http://www.lesker.com/newweb/valves/gas ... cfm?pgid=0). Will this work for this application? Will I need a mass flow controller? I'll be using a Robinair 15600 as a vacuum pump and a 10L cylinder of deuterium.

Thanks,
-Sasha

Jeremy Sims
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Re: Leak valves and mass flow controllers

Post by Jeremy Sims » Fri Mar 13, 2015 3:51 am

I'm no expert yet but just from reading hundreds of old posts the last few months I can tell you that it is not a good idea to go with a glass chamber for a real fusor. It is okay for a demo fusor. A real fusor will normally have two types of vacuum pumps. That information is in the FAQ's. Needle valves seem to be most commonly used to introduce deuterium.

John Futter
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Re: Leak valves and mass flow controllers

Post by John Futter » Fri Mar 13, 2015 8:39 am

It's time to read all the FAQ's

Sasha Cohen
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Re: Leak valves and mass flow controllers

Post by Sasha Cohen » Fri Mar 13, 2015 3:09 pm

Hi John and Jeremy,

Thanks for your input!

Sasha Cohen
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Re: Leak valves and mass flow controllers

Post by Sasha Cohen » Fri Mar 13, 2015 3:39 pm

Would this leak valve be appropriate for this application?

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Andrew Robinson
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Re: Leak valves and mass flow controllers

Post by Andrew Robinson » Fri Mar 13, 2015 7:23 pm

Guys... "New User Chat" area... Please...

If you question contains the following: "Would this ________ work?" Put it in the new users chat section.
I can wire anything directly into anything! I'm the professor!

Sasha Cohen
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Real name: Sasha Cohen

Re: Leak valves and mass flow controllers

Post by Sasha Cohen » Fri Mar 13, 2015 7:47 pm

Alrighty, sorry 'bout that...

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