Alpha flux diagnostic
Alpha flux diagnostic
I was thinking, depending on the flux, which I'm guess if all goes well, should be huge, to measure the flux of alpha coming from fusion reactions, we can make a polywell-like shaped diagnostic device of just 6 rogowski coils taped together. It has to be bigger than the WB machines.
Just a thought.
Just a thought.
Throwing my life away for this whole Fusion mess.
Re: Alpha flux diagnostic
Well, I had to look it up-Robthebob wrote:I was thinking, depending on the flux, which I'm guess if all goes well, should be huge, to measure the flux of alpha coming from fusion reactions, we can make a polywell-like shaped diagnostic device of just 6 rogowski coils taped together. It has to be bigger than the WB machines.
Just a thought.
http://en.wikipedia.org/wiki/Rogowski_coil
Works for AC or pulsed current, I'm not sure it would work for steady state outflow of alpha particles (DC current). In a pulsed research reactor I could see it giving information perhaps more acurrate than trying to count the alpha particles with some other methods such as sintellation, plastic pits, or geiger counters.
Dan Tibbets
To error is human... and I'm very human.
An interesting investigation may be their application to high power AC protection.because it has no iron core to saturate, it is highly linear even when subjected to large currents
For my study one the final projects on the table is dealing with CTs (current transformers) that saturate during normal events like transformer in-rush. One usual method of restraining the protection from tripping is looking at the pattern of the harmonics to distinguish between fault currents and in-rush currents. A saturated CT distorts the waveforms and can cause nuisance tripping. This is why there are separate designs for metering and protection CTs.
In theory there is no difference between theory and practice, but in practice there is.
Regardless of what type of current it is, if it's flow of charge, it will detect it. I think, also, the thing about rogowski coils is that they are extremely cheap, like, you can make one, including the integrating circuit, for under 100 bucks.
Oh yeah, I was thinking, since polywell machines are supposed to be symmetrical, I guess you can just have one big coil positioned in the right place and times that by 6 to get the total flux.
Oh yeah, I was thinking, since polywell machines are supposed to be symmetrical, I guess you can just have one big coil positioned in the right place and times that by 6 to get the total flux.
Throwing my life away for this whole Fusion mess.
?? what are you talking about?chrismb wrote:I believe one might also add a very small contamination of beryllium to the reaction volume, and fast alphas will release [detectable] gammas when they interact with the beryllium contamination. This has been reported in tokamak projects.
Throwing my life away for this whole Fusion mess.
Opps, I meant to say, regardless of what type of current, if there's a changing current flow, it will "detect" it by displaying voltage. The current is then proportional to the sum of voltage over time.
When you start the reaction, obviously, there's no current, no flux of alphas, when you put in the fuel, then you should see alphas flying out of the polywell machine, in which case, you will see a change of current flow, from zero to whatever amount of current corresponding to the max flux, sum up all the voltage signal from zero to that value corresponding to the max flux, then you got your current.
I mean I've never tried to put a closed rogowski coil in front of a alpha particle accelerator and see if you can get data from it, my guess? Yes.
When you start the reaction, obviously, there's no current, no flux of alphas, when you put in the fuel, then you should see alphas flying out of the polywell machine, in which case, you will see a change of current flow, from zero to whatever amount of current corresponding to the max flux, sum up all the voltage signal from zero to that value corresponding to the max flux, then you got your current.
I mean I've never tried to put a closed rogowski coil in front of a alpha particle accelerator and see if you can get data from it, my guess? Yes.
Throwing my life away for this whole Fusion mess.
That is correct. BTW you need to put a load on the RG coil to make things work out IIRC. Just like a current transformer.Robthebob wrote:Opps, I meant to say, regardless of what type of current, if there's a changing current flow, it will "detect" it by displaying voltage. The current is then proportional to the sum of voltage over time.
When you start the reaction, obviously, there's no current, no flux of alphas, when you put in the fuel, then you should see alphas flying out of the polywell machine, in which case, you will see a change of current flow, from zero to whatever amount of current corresponding to the max flux, sum up all the voltage signal from zero to that value corresponding to the max flux, then you got your current.
I mean I've never tried to put a closed rogowski coil in front of a alpha particle accelerator and see if you can get data from it, my guess? Yes.
Engineering is the art of making what you want from what you can get at a profit.