MB Fusor progress
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- Posts: 7
- Joined: Wed Sep 09, 2020 2:43 pm
- Real name: Mike Buchanan
MB Fusor progress
Hi All,
This is my Fusor progress.
This project began 08/20. It has been a while in the making, with the gradual acquisition and manufacture of components, fitted in in sparse life downtime.
Many thanks to John Futter, who supplied some of the key components.
The chamber is a recycled leybold turbovac 450 casing (this machine disintegrated). Dia is 7" or ~180mm, halfway in betweeen the suggested 6-8".
Diffusion pump - Edwards 650W
A Futter special! Ex an electron microscope system.
Comes with buffer tank and system. HV feedthrough:
This is my Fusor progress.
This project began 08/20. It has been a while in the making, with the gradual acquisition and manufacture of components, fitted in in sparse life downtime.
Many thanks to John Futter, who supplied some of the key components.
The chamber is a recycled leybold turbovac 450 casing (this machine disintegrated). Dia is 7" or ~180mm, halfway in betweeen the suggested 6-8".
Diffusion pump - Edwards 650W
A Futter special! Ex an electron microscope system.
Comes with buffer tank and system. HV feedthrough:
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- Posts: 7
- Joined: Wed Sep 09, 2020 2:43 pm
- Real name: Mike Buchanan
- Richard Hull
- Moderator
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- Joined: Fri Jun 15, 2001 9:44 am
- Real name: Richard Hull
Re: MB Fusor progress
A plus-size turbo turned into a fusor? I hope you have a mating throttle valve to couple the diff pump to the fusor. Gas flow control is critical. That is quite a volume there.
Richard Hull
Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
The more complex the idea put forward by the poor amateur, the more likely it will never see embodiment
Fusion is the energy of the future....and it always will be
The more complex the idea put forward by the poor amateur, the more likely it will never see embodiment
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- Real name: John Futter
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Re: MB Fusor progress
well done mike
keep posting
keep posting
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- Posts: 7
- Joined: Wed Sep 09, 2020 2:43 pm
- Real name: Mike Buchanan
Re: MB Fusor progress
Chamber mods.
Added a view port (3" SCH 10 SS), KF 25 ports, NPT sockets etc.
All welds on inside.
Chamber to diffpump adapter.
5" SCH40 SS pipe was a perfect match. The cone was developed and hand formed in 2.5mm SS.
Machined a flange to connect to existing chamber flange. I should have just cut the exisitng flange off and welded the cone directly to the chamber.
All welds on inside or autogenous full penetration (no virtual leaks).
Only machined diff pump flange post welding.
Added a view port (3" SCH 10 SS), KF 25 ports, NPT sockets etc.
All welds on inside.
Chamber to diffpump adapter.
5" SCH40 SS pipe was a perfect match. The cone was developed and hand formed in 2.5mm SS.
Machined a flange to connect to existing chamber flange. I should have just cut the exisitng flange off and welded the cone directly to the chamber.
All welds on inside or autogenous full penetration (no virtual leaks).
Only machined diff pump flange post welding.
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- Posts: 7
- Joined: Wed Sep 09, 2020 2:43 pm
- Real name: Mike Buchanan
Re: MB Fusor progress
Yes.Richard Hull wrote: ↑Mon Sep 13, 2021 12:22 am A plus-size turbo turned into a fusor? I hope you have a mating throttle valve to couple the diff pump to the fusor. Gas flow control is critical. That is quite a volume there.
Richard Hull
The diff pump has a built in high vac valve, with fine control, which will be used for throttling.
See adapter images above.
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- Posts: 7
- Joined: Wed Sep 09, 2020 2:43 pm
- Real name: Mike Buchanan
Re: MB Fusor progress
I am having trouble posting images here. It only works for me very ocasionaly. I get:
"Error
It was not possible to determine the dimensions of the image. Please verify that the URL you entered is correct."
See below:
Note I am just using the "Add files" button in attachments, and uploading local files. Not trying to link anywhere.
Yes, it is painful and ironic that I can post a screen shot of the error message, but not the actual images!
Can anyone tell me how to make this work?
"Error
It was not possible to determine the dimensions of the image. Please verify that the URL you entered is correct."
See below:
Note I am just using the "Add files" button in attachments, and uploading local files. Not trying to link anywhere.
Yes, it is painful and ironic that I can post a screen shot of the error message, but not the actual images!
Can anyone tell me how to make this work?
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- Posts: 1850
- Joined: Wed Apr 21, 2004 10:29 pm
- Real name: John Futter
- Contact:
Re: MB Fusor progress
Mikes having trouble posting pics so i'm doing it for him
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- Posts: 1850
- Joined: Wed Apr 21, 2004 10:29 pm
- Real name: John Futter
- Contact:
Re: MB Fusor progress
Some more
HV xformer
Xformer specs
Ballast, Caps 4nF 60kV variac
Rectifier
Tantalum grid
Pirani gauge
full setup
First High Vac
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- Posts: 7
- Joined: Wed Sep 09, 2020 2:43 pm
- Real name: Mike Buchanan
Re: MB Fusor progress
Thanks John for uploading those.
A quick credit: the PSU and HV gear has been kindly leant to the project by an electrical engineer friend Mike D*. I will leave it up to him to out himself here if he so chooses.
First plasma:
~10kV
Argon
Struggled a bit getting settings right etc. Will give you some better numbers next time after we refine the setup more.
A quick credit: the PSU and HV gear has been kindly leant to the project by an electrical engineer friend Mike D*. I will leave it up to him to out himself here if he so chooses.
First plasma:
~10kV
Argon
Struggled a bit getting settings right etc. Will give you some better numbers next time after we refine the setup more.