New neutron detector available

This area is for discussions involving any fusion related radiation metrology issues. Neutrons are the key signature of fusion, but other radiations are of interest to the amateur fusioneer as well.
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Werner Engel
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Re: New neutron detector available

Post by Werner Engel »

I think I will give them a chance and try the components. I'll keep you informed. But it will take some time ..
BR,
Werner
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Richard Hull
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Re: New neutron detector available

Post by Richard Hull »

Most important in a report is about at what point in fusion are these things reporting out of any noise or background. Newbies attempting fusion are typically way down in the fusion level. 5,000 - 20,000 neutrons, isotropic.

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
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Werner Engel
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Re: New neutron detector available

Post by Werner Engel »

The new device arrived!
Unfortunatly I will not have time to test it within the next weeks.
But working in my head on a test szenario ...

Has anyone else tried to get a hand on the new DOMINO?
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Netron Detektor DOMINO 5_4.JPG
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Richard Hull
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Re: New neutron detector available

Post by Richard Hull »

We look forward to your future reports on the device. Naturally, we would hope for an older neutron detector reading versus the new solid state detector in a single run for comparison. Thanks

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
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Werner Engel
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Re: New neutron detector available

Post by Werner Engel »

OK - it took some time - but finally I got some results.
Attached you find the data Philipp and I collected at one of our local research-facility neutron sources.
It seems that the device (within the small red box) is not so much depending on slow neutrons - which is fine!
The source has a very low gamma emission and we hope that the counts we got are almost only from neutrons.

We also did some tests with a Cs-137 source – so we have an idea how sensitive it is to gamma radiation.
We plan to compare it with a brand new detector type (and with a white neutron beam from a nuclear reactor) which is still under development – but this will take a while.

Hope to hear from you - is someone else is going to test it - please come back to me to compare the numbers.

BR,
Werner
Attachments
the red box contains the detector.PNG
Functional Test of RDT Domino Neutron detector.pdf
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John Futter
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Re: New neutron detector available

Post by John Futter »

Werner
your report would make more sense if the axis on your graphs were labeled properly
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Werner Engel
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Re: New neutron detector available

Post by Werner Engel »

... and here is the moderator now containing the new detector.
It will be filled with paraffin today.
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IMG_2503.JPG
David Kunkle
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Re: New neutron detector available

Post by David Kunkle »

Very nice. Looks like you made the entire thing with a 3d printer?
If your experiment needs statistics, you ought to have done a better experiment.

Ernest Rutherford
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Werner Engel
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Re: New neutron detector available

Post by Werner Engel »

yes, I printed it and filled it with wax.
I can send you the print files (or Inventor files) if you need them.
Attached is a pic of the filling process (with cooling). I used a hose - not the funnel.
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wax filling of the moderator ball.PNG
Eric Slighton
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Re: New neutron detector available

Post by Eric Slighton »

There is a group buying effort for these detectors at $469..

https://groupgets.com/campaigns/290-dom ... ector-v5-4
John Futter
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Re: New neutron detector available

Post by John Futter »

Werner
I did ask you to correct the graphs but after a few months you have not
1./ your data flys in the face of the detector published data
2./ detector sensitvty increases as the neutrons are thermalised your graph shows the opposite??
3./ why a ball for the moderator, the detector is planar so should have been rectangular for best response
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