Greetings!

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Samuel Berman
Posts: 30
Joined: Tue Nov 14, 2017 5:55 am
Real name: Samuel Berman
Location: San Jose, California

Re: Greetings!

Post by Samuel Berman » Sat Nov 18, 2017 5:19 am

How about for just discussing my pump/gauge and sharing details about my setup?
"You miss 100% of the shots you don't make."

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Dennis P Brown
Posts: 1470
Joined: Sun May 20, 2012 2:46 pm
Real name: Dennis P Brown
Location: Glen Arm, MD

Re: Greetings!

Post by Dennis P Brown » Sat Nov 18, 2017 10:54 am

If you want to post a picture of the gauge and/or pump that you now have (unless it is a fully assembled, operating vacuum system - that could go under the "Images du Jour") or want some operational information on your pump and gauge system, or have a question on how best to test the pump those questions could would be appropriate for the 'Chat' section.

If you turn out to have an electronic question about the gauge controller or issues with the calibration, that would go in the vacuum system - ditto on, say, changing the pump oil.

If in doubt, just try the closest you feel is correct - not really a big concern unless it is an extremely elementary question addressed in the FAQ under the section appropriate for that device/knowledge area.

Joep Stuyfzand
Posts: 3
Joined: Thu Nov 16, 2017 10:40 pm
Real name: Joep Stuyfzand

Re: Greetings!

Post by Joep Stuyfzand » Sun Nov 19, 2017 8:47 pm

Dennis P Brown wrote:
Tue Nov 14, 2017 10:15 am
Hello, and welcome. Both a single stage pump and a 'glass jar' are only useful for a plasma demo; a fusor requires a steel chamber or steel vacuum connector like a four-way cross ( 2.75 inch or larger.)
Is there any specific reason that you can not achieve D-D fusion in a glass jar fusor?
Or is it because a glass jar does not protect against x-rays so a glass jar is practically not useful for real fusion?

MatthewL
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Joined: Mon Mar 06, 2017 12:13 am
Real name: Matthew Lallinger
Location: Houston, Tx

Re: Greetings!

Post by MatthewL » Mon Nov 20, 2017 1:06 am

Joep,

One reason not to use a glass chamber is because an increased voltage above demo voltages will produce more powerful ion beams that can heat and weaken the glass causing an implosion. The glass will also allow most of the x-rays through as well. The FAQ's do answer this question in more depth so make sure to check there too.

Regards,
-Matthew

Joep Stuyfzand
Posts: 3
Joined: Thu Nov 16, 2017 10:40 pm
Real name: Joep Stuyfzand

Re: Greetings!

Post by Joep Stuyfzand » Mon Nov 20, 2017 1:30 pm

MatthewL wrote:
Mon Nov 20, 2017 1:06 am
Joep,

One reason not to use a glass chamber is because an increased voltage above demo voltages will produce more powerful ion beams that can heat and weaken the glass causing an implosion. The glass will also allow most of the x-rays through as well. The FAQ's do answer this question in more depth so make sure to check there too.

Regards,
-Matthew
That cleared it up.
Thank you, Matthew.

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Dennis P Brown
Posts: 1470
Joined: Sun May 20, 2012 2:46 pm
Real name: Dennis P Brown
Location: Glen Arm, MD

Re: Greetings!

Post by Dennis P Brown » Mon Nov 20, 2017 1:55 pm

This discussion really does need to be moved to the chat section since this section is meant to be used for Introductions only. Also, please read FAQ's a bit more on fusor design before posting specific questions. Saves time.

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