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by Dennis P Brown
Sat Oct 09, 2021 10:58 am
Forum: Fusion --- Past, Present, and Future
Topic: Another great analysis of power fusion - The dream
Replies: 12
Views: 675

Re: Another great analysis of power fusion - The dream

I will add (like I usually do) that a semi-small effort has certainly been very successful: the Wendelstein 7x (a stellarator) by the Germans is coming along nicely and they refuse to make huge claims or make loud noise; rather, they are doing and achieving amazing results. See: https://www.ans.org/...
by Dennis P Brown
Sat Oct 09, 2021 10:28 am
Forum: Images du Jour
Topic: byron addams fusor update
Replies: 22
Views: 5823

Re: byron addams fusor update

Slate is available from major hardware stores - is inexpensive, does not conduct electricity, easy to cut/drill and is safe (lead is toxic and should be painted to reduce dust issues.) Of course, doesn't bend so that might be the deciding issue.
by Dennis P Brown
Sat Oct 09, 2021 10:24 am
Forum: New User Chat Area
Topic: Used ionization gauge looks burnt out?
Replies: 4
Views: 236

Re: Used ionization gauge looks burnt out?

As I tell anyone buying electronic equipment; if the seller allows returns (two weeks min.) then its worthwhile considering; if not, don't ever buy from them. Of course, ask if tested and/or working. Not that that is essential if they allow returns. Testing is simple (even w/o vacuum.) Use an ohm me...
by Dennis P Brown
Sat Oct 09, 2021 10:20 am
Forum: Please Introduce Yourself
Topic: Hello from Maryland
Replies: 1
Views: 309

Re: Hello from Maryland

Hello, also based in Maryland. Aim for entering the plasma club when completing your demo fusor. Keep us informed on your progress.
by Dennis P Brown
Fri Oct 08, 2021 10:39 am
Forum: Please Introduce Yourself
Topic: Hi from IMSA
Replies: 1
Views: 244

Re: Hi from IMSA

Hello and welcome,
deciding on an approach (demo or real fusor) and goals (plasma club, neutron detection) will determine the types of equipment you need to acquire. Before buying expensive items be certain they'll do what is needed by asking in the appropriate forum.
by Dennis P Brown
Thu Sep 30, 2021 2:50 pm
Forum: Images du Jour
Topic: byron addams fusor update
Replies: 22
Views: 5823

Re: byron addams fusor update

Congratulations on making the plasma club; hope you can get some heavy water. Do consider talking to a local university/college and maybe they have some and would supply it knowing what you are doing. By the way, the 30 kV 10 ma supply will produce x-rays and you really need to think about what safe...
by Dennis P Brown
Wed Sep 15, 2021 5:36 pm
Forum: Vacuum Technology (& FAQs)
Topic: Vacuum Bearings for TMP-50
Replies: 20
Views: 3421

Re: Vacuum Bearings for TMP-50

Maybe start a new one after this point. A spanner wrench used for lens system disassembly might enable you to remove the bearing from the shaft. Might need a puller. Can't tell from the photo.
by Dennis P Brown
Mon Sep 06, 2021 11:59 am
Forum: New User Chat Area
Topic: Is a Rectangular Vacuum Chamber a Good Choice for a Demo Fusor
Replies: 19
Views: 1401

Re: Is a Rectangular Vacuum Chamber a Good Choice for a Demo Fusor

If fairly accurate, the 0-10 micron range display has good resolution and would appear ideal for a fusor - standard fusors tend to operate in that region; smaller fusors operate higher but that display has that range as well. You should ask about returns (and a two week window to return) if the unit...
by Dennis P Brown
Sat Sep 04, 2021 1:06 pm
Forum: New User Chat Area
Topic: Is a Rectangular Vacuum Chamber a Good Choice for a Demo Fusor
Replies: 19
Views: 1401

Re: Is a Rectangular Vacuum Chamber a Good Choice for a Demo Fusor

That sounds like an excellent plan. Gaining experience with vacuum systems and related vacuum gauges is a critical first step and essential before one can do fusion in any fusor. That seems somewhat high for a simple TC gauge but I don't (any more) know what deals are out there. Maybe others could o...
by Dennis P Brown
Fri Sep 03, 2021 8:32 pm
Forum: Please Introduce Yourself
Topic: Hello from Utah
Replies: 3
Views: 565

Re: Hello from Utah

However, for unique issues (one often runs into when building a new system) FAQ's may or may not be useful; so, after searching and still need advice, then certainly do ask in the appropriate forum thread.

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