Setup (with neutrons!)

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Nicholas Pitt
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Joined: Mon Jun 25, 2012 2:07 am
Real name: Nicholas Pitt
Location: Troy, NY
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Setup (with neutrons!)

Post by Nicholas Pitt » Sun Apr 23, 2017 5:24 am

Hey guys!

Thought I'd fire up the fusor and share some images of the setup. This is the 3rd major revision of the system with a leak rate of around 0.1 mtorr/minute. The results in the images were from a couple of short runs totaling around 5 minutes with fluctuating (manually controlled) pressure with the following stats:

Power: 51kv, 2-6ma
Pressure: 17-18 mtorr (capactive)
Flow rate: (unsure, however I generally set the gas valve to produce a 1 mtorr/second pressure increase of the chamber when the throttling valve is fully closed)
Max neutron dose rate: 6.9 mR/h (He3 with tungsten shielding)
Neutron dose: 348 uR

After initial runs of the system which completely saturated my GM probe, I added 1mm lead shielding to the chamber and the viewport was swapped for one with leaded glass.

Front:
fusor_front.jpg
Back:
fusor_rear.jpg
Neutron Dose:
neutron_dose.jpg
Max Neutron Dose Rate:
neutron_dose_rate.jpg
Gamma Dose:
gamma_dose_rate.jpg
Fusor In Action:
fusor_in_action.jpg
1st Light (Bell Jar, circa 2010):
rev_1_plasma.jpg
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein

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Richard Hull
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Re: Setup (with neutrons!)

Post by Richard Hull » Sun Apr 23, 2017 6:53 am

Thanks again for sharing your latest superb results. It is cookin' now!

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
Retired now...Doing only what I want and not what I should...every day is a saturday.

User avatar
Nicholas Pitt
Posts: 5
Joined: Mon Jun 25, 2012 2:07 am
Real name: Nicholas Pitt
Location: Troy, NY
Contact:

Re: Setup (with neutrons!)

Post by Nicholas Pitt » Tue Apr 25, 2017 3:45 pm

Thanks Richard, and yes it is! Thought I'd also share a short operation video. I did manage to increase the output by pushing the supply closer to its current trip point (it actually trips in the video). I'll see if I can get the pressure stable enough to hold it there for a prolonged run. The alarm in the background is a 10 mrem/h gamma alarm I had configured on the counter.

Max neutron dose rate:
9_47_mrem_h_n.jpg
Neutron dose for around 20 minutes of runtime:
1_98_mrem_n.jpg
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein

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