Dismantling our fusor

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Gunnar Mein
Posts: 40
Joined: Sat May 29, 2021 12:24 pm
Real name: Gunnar Mein
Location: Kirland, WA

Dismantling our fusor

Post by Gunnar Mein »

We took our Fusor out of its shell yesterday, partially because we want to install a new camera that should arrive today. As we recently remembered that we have an acrylic bottom plate, that might make for nice pictures for a while.

First, a picture in the room. By the door, the emergency off switch for the HV system. Left: electronics, low right: rough pump, underneath: HV system (NST plus CW + measurement)

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Then, some close-ups:

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Variac, sensor board, rough pump:

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Then we took the cart out of the lead enclosure:

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Next, some vulnerable items come off:

Camera on arm with mirror

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The gas feed with the needle valve, solenoid, mechanical shutoff, and Arduino:

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The Pirani gauge and Arduino, the latter of which I am hoping to move away from there and into a shielded container today

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The turbo pump controller and its Arduino:

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Now the prep work for the new camera. First the view from the bottom, needs some cleanup:

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The place it sits on:

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And with its new channel and hole for the camera and its USB cable. The cardboard-cutout stands in for the camera.

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And that's it for today. Now we wait to receive the new camera.
John Futter
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Joined: Wed Apr 21, 2004 10:29 pm
Real name: John Futter
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Re: Dismantling our fusor

Post by John Futter »

Very impressive
Just a quick note
You might want to shield a lot of your electronics. HT flashovers let go a lot of EMI that tends to destroy solid state electronics

lots of ferrite beads on cables and earthed metal boxes to put the electronics in
Gunnar Mein
Posts: 40
Joined: Sat May 29, 2021 12:24 pm
Real name: Gunnar Mein
Location: Kirland, WA

Re: Dismantling our fusor

Post by Gunnar Mein »

Thanks for the note - I just stopped by our electronics store and bought a bunch of metal cases, we'll see what we can do. It's been one of our worries, along with discharge spikes.
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