Greetings all,
I am reporting the successful first light of my demo fusor. From this point I plan on upgrading the fusor to fusion capable specs.
I cut a hole for the feedthrough and drilled blind holes to thread for the connection. I was a little ham fisted with tapping threads for the electrical feed through (the threads were crooked) but after purchasing a tapping alignment tool, I was able to get them in nice and straight.
Demo Fusor II :First Light
- Ed Meserve
- Posts: 74
- Joined: Wed Oct 19, 2011 4:51 pm
- Real name: Ed Meserve
- Location: Maine, USA
Demo Fusor II :First Light
Ed Meserve
- Richard Hull
- Moderator
- Posts: 15037
- Joined: Fri Jun 15, 2001 9:44 am
- Real name: Richard Hull
Re: Demo Fusor II :First Light
Good work. You got the nice glow of a basic Demo fusor.
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
- Ed Meserve
- Posts: 74
- Joined: Wed Oct 19, 2011 4:51 pm
- Real name: Ed Meserve
- Location: Maine, USA
Re: Demo Fusor II :First Light
Hi Folks, please consider this my application to the Plasma Club.
The chamber is a 6" Conflat Tee with adapters to 4.5" for the viewport and 2.75" for vacuum port. The electrical feedthrough I mounted through a 6" blank I purchased.
The vacuum pump is a Welch 1400 and the power supply is an iron core NST rated 15kV on the secondary. The vacuum gauge is an MKS 901P Load Lock Transducer. This gauge can be read serially over RS-232 or via an analog voltage signal. I opted for the simpler analog signal. At the moment I don't have complete faith in the acuracy of the Ebay Loadlock gauge due to lack of reference, but I have confidence in the relative accuracy of the voltage and current reading as I have a fluke 6kV probe and a fluke 787 Process meter.
Construction details can be found in my previous post, here:
viewtopic.php?t=13458
At the time of the selfie, the voltage was about 900V, current was 10mA, and the pressure was at 125mTorr.
It took 10 minutes from Atm to 25 mtorr when the plasma extinguished. Below is just before the plasma extinguished; when this image was taken, the plasma wasn't visible by eye, but was through the camera, kinda in the same way you can record the flash pattern of a TV remote IR LED.
The chamber is a 6" Conflat Tee with adapters to 4.5" for the viewport and 2.75" for vacuum port. The electrical feedthrough I mounted through a 6" blank I purchased.
The vacuum pump is a Welch 1400 and the power supply is an iron core NST rated 15kV on the secondary. The vacuum gauge is an MKS 901P Load Lock Transducer. This gauge can be read serially over RS-232 or via an analog voltage signal. I opted for the simpler analog signal. At the moment I don't have complete faith in the acuracy of the Ebay Loadlock gauge due to lack of reference, but I have confidence in the relative accuracy of the voltage and current reading as I have a fluke 6kV probe and a fluke 787 Process meter.
Construction details can be found in my previous post, here:
viewtopic.php?t=13458
At the time of the selfie, the voltage was about 900V, current was 10mA, and the pressure was at 125mTorr.
It took 10 minutes from Atm to 25 mtorr when the plasma extinguished. Below is just before the plasma extinguished; when this image was taken, the plasma wasn't visible by eye, but was through the camera, kinda in the same way you can record the flash pattern of a TV remote IR LED.
Ed Meserve
- Mark Rowley
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- Real name: Mark Rowley
- Location: Sacramento California
- Contact:
Re: Demo Fusor II :First Light
Looks great Ed. Congrats on this important milestone.
Mark Rowley
Mark Rowley
- Richard Hull
- Moderator
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- Joined: Fri Jun 15, 2001 9:44 am
- Real name: Richard Hull
Re: Demo Fusor II :First Light
Welcome to the plasma club, Ed. I have logged you in.
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
- Dennis P Brown
- Posts: 3190
- Joined: Sun May 20, 2012 10:46 am
- Real name: Dennis Brown
Re: Demo Fusor II :First Light
Nice work making those detectros and displays. Congrats on the plasma club. Great first step towards the neutron club, too.