Search found 300 matches

by Roberto Ferrari
Fri Feb 19, 2021 12:37 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Titanium Coated Endcaps for the Cube Fusor
Replies: 20
Views: 761

Re: Titanium Coated Endcaps for the Cube Fusor

Jim and Jon,

Understood, thanks.
Roberto
by Roberto Ferrari
Thu Feb 18, 2021 8:45 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Titanium Coated Endcaps for the Cube Fusor
Replies: 20
Views: 761

Re: Titanium Coated Endcaps for the Cube Fusor

Jon, Jim, Richard
Thanks for your comments.
Being unable to assembly a PVD, what about heating a titanium wire in a high vacuum, as in sublimation pumps?
Some will condense in an adecuately positioned piece.
Am I wrong?
by Roberto Ferrari
Wed Feb 17, 2021 11:26 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Titanium Coated Endcaps for the Cube Fusor
Replies: 20
Views: 761

Re: Titanium Coated Endcaps for the Cube Fusor

Jon
A superb setup, as always.

But help me to understand. Wasn´t enough to use a titanium sheet?

Roberto
by Roberto Ferrari
Thu Feb 11, 2021 9:16 pm
Forum: Vacuum Technology (& FAQs)
Topic: info about TPH-050
Replies: 2
Views: 147

info about TPH-050

I have the following questions about the Pfeiffer TPH-050 turbomolecular pump:
-where to get the lubricating oil, or a replacement one.
-the resistances of the motor windings.
-the motor windings pin-out.
Thanks in advance.
Roberto
by Roberto Ferrari
Fri Apr 03, 2020 2:33 pm
Forum: Books & References
Topic: Experimental techniques
Replies: 0
Views: 2023

Experimental techniques

I wish to call your attention to a nice bibliography on experimental techniques, not all but many ones useful for fusor experimenters:

Experimental Innovations in Surface Science, by John T. Yates Jr.

The title is slightly misleading but the content is invaluable.
by Roberto Ferrari
Sat Mar 28, 2020 1:23 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Fusor V construction - the process long running
Replies: 48
Views: 18308

Re: Fusor V construction - the process long running

Richard
I am a bit confused about the image of your HV feedthrough.
The CF flange (a Varian one) seems to lack the sharp edge to seal against the copper washer.
Please comment.
Roberto
by Roberto Ferrari
Mon Mar 23, 2020 12:50 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Window dressing - Trying to clean view port glass
Replies: 5
Views: 1550

Re: Window dressing - Trying to clean view port glass

Hi Richard, a useful technique to removing tungsten deposits is melting a bit of sodium nitrite over the surface to be cleaned. It melts at low temperature and reacts with the tungsten. Then you wash thoroughly the window with distilled water.
by Roberto Ferrari
Wed Jan 29, 2020 12:01 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Electrostatic lens sizing
Replies: 3
Views: 3121

Re: Electrostatic lens sizing

Hi Patrick
Thanks for sharing.
Not useful for my project but a friend of mine, in struggle with an electrostatic accelerator will enjoy your info.
by Roberto Ferrari
Wed Jan 22, 2020 8:04 pm
Forum: Announcements and Site Administration Topics
Topic: Annual Fundraiser: Let's Try This Again
Replies: 6
Views: 2779

Re: Annual Fundraiser: Let's Try This Again

Paul
Donation appears gone to Tanglewook Ventures.
Is it OK?