I built a small Multicusp DC Ion source :)This is just an air plasma, more gasses to come.
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I built a small Multicusp DC Ion source
This is just an air plasma, more gasses to come. Next step is to characterize it! I am really looking forward to see how much ion current I can get from it.@gigabecquerel air plasma pretty.
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I built a small Multicusp DC Ion source
This is just an air plasma, more gasses to come. Next step is to characterize it! I am really looking forward to see how much ion current I can get from it.@gigabecquerel stealing that design.
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@gigabecquerel stealing that design.
@PatrickHerd Hah, wait until I have confirmed it actually works!
Just 'cause it glows pretty doesn't mean it's actually any good
There are a few issues right from the start, mainly the magnets being way too weak! I'm also thinking about adding an axial field to focus more ions down the central channel.
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@PatrickHerd Hah, wait until I have confirmed it actually works!
Just 'cause it glows pretty doesn't mean it's actually any goodThere are a few issues right from the start, mainly the magnets being way too weak! I'm also thinking about adding an axial field to focus more ions down the central channel.
@gigabecquerel I'll phone a friend.
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@gigabecquerel I'll phone a friend.
@PatrickHerd Not sure if that's a reference I don't get or a saying I'm not familiar with
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@PatrickHerd Not sure if that's a reference I don't get or a saying I'm not familiar with
@gigabecquerel ahh I have a friend making ion sources at that scale professionally, I'll ask what magnets he uses.
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@gigabecquerel ahh I have a friend making ion sources at that scale professionally, I'll ask what magnets he uses.
@PatrickHerd Ahh, nice
To be honest, I just eyeballed them and vastly overestimated their strength. Just ordered bigger ones and I'll add an iron ring on the outside to guide the field.
I bet he'll also tell you that I need a filament for this configuration, which I know I do, but I'm going for simplicity over anything else really
The way it's set up now it would also be fairly simple to rebuild it as an RF ion source, should I ever want to mess around with RF stuff. -
@PatrickHerd Ahh, nice
To be honest, I just eyeballed them and vastly overestimated their strength. Just ordered bigger ones and I'll add an iron ring on the outside to guide the field.
I bet he'll also tell you that I need a filament for this configuration, which I know I do, but I'm going for simplicity over anything else really
The way it's set up now it would also be fairly simple to rebuild it as an RF ion source, should I ever want to mess around with RF stuff.@PatrickHerd But I'd still be very happy about any information they can provide!
There's lots of info on bigger sources, but I don't want to put kW of RF into something to get mA of beam, I'm quite happy with something small and 100 uA or so of beam.
From what I gathered a small penning source would be just fine for that, but I like the glow of more "open" sources like this one
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I built a small Multicusp DC Ion source
This is just an air plasma, more gasses to come. Next step is to characterize it! I am really looking forward to see how much ion current I can get from it.@gigabecquerel plastic cover because of high voltage or because of low energy radiation?
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@gigabecquerel plastic cover because of high voltage or because of low energy radiation?
@OE1LHU HV, and Implosion hazard.
This doesn't produce much, if any radiation due to the low voltages of < 10 kV
