Joe Gayo's lab tour
Re: Joe Gayo's lab tour
In regard to the PIC simulation, please be advised that a 2D simulation does not give a valid representation of a system with axial symmetry.
- Richard Hull
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Re: Joe Gayo's lab tour
With the 4 X4 6061 request from Jon, coupled with his machining abilities, I imagine he has ideas. I am still musing over using my 6 way 2.75 CF cross to replaced fusor IV.
Richard Hull
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.
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.
Re: Joe Gayo's lab tour
@Dan Sure it does ... it's an axially symmetric (RZ) code/solver. I actually, know the individual that wrote Starfish (his Ph.D.) and he and I are working together on simulations.
Re: Joe Gayo's lab tour
The description on the link to the Starfish code describes it as a 2D simulation. I overlooked the mention on another page that it allows the selection of a Cartesian or axisymmetric system, which requires a more sophisticated RZ solver. I guess I was surprised that someone would be making the more sophisticated software freely available. I stand corrected. My apologies.
Re: Joe Gayo's lab tour
@Jon - Thank you for the kind words and the tour of your impressive lab!
@Everyone -
I have a -100kV @ 20mA power supply arriving in the next few weeks and will begin experimenting with different cathode/anode materials. Based on some preliminary results the Aluminum construction may be contributing to the strong results.
@Everyone -
I have a -100kV @ 20mA power supply arriving in the next few weeks and will begin experimenting with different cathode/anode materials. Based on some preliminary results the Aluminum construction may be contributing to the strong results.
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Re: Joe Gayo's lab tour
Joe,
Your effort is really impressive and it definitely shows in the numbers. There has been a lot of talk recently that these smaller fusors are capable of outputting a higher neutron rate, for a given kW input, than larger 6-10" devices. Intuitively, I am on board with this. However, up until your efforts I have not seen extremely convincing evidence that such claims are true. I think this opens up the opportunity for a community wide effort to collect more data. In particular, I am suggesting that all members with an active fusor attempt to contribute to a community-wide data log, as was attempted here:
viewtopic.php?f=47&t=11331
I have compared your output rates with the other data collected so far and it is clear that they are outliers (qualitatively). I would certainty be interested in seeing your neutron output rate for 40-50 kV and 5-15 mA; as few other fusors have the ability to reach 70 kV so comparison is difficult.
Can't wait to see what you do next.
Scott
Your effort is really impressive and it definitely shows in the numbers. There has been a lot of talk recently that these smaller fusors are capable of outputting a higher neutron rate, for a given kW input, than larger 6-10" devices. Intuitively, I am on board with this. However, up until your efforts I have not seen extremely convincing evidence that such claims are true. I think this opens up the opportunity for a community wide effort to collect more data. In particular, I am suggesting that all members with an active fusor attempt to contribute to a community-wide data log, as was attempted here:
viewtopic.php?f=47&t=11331
I have compared your output rates with the other data collected so far and it is clear that they are outliers (qualitatively). I would certainty be interested in seeing your neutron output rate for 40-50 kV and 5-15 mA; as few other fusors have the ability to reach 70 kV so comparison is difficult.
Can't wait to see what you do next.
Scott
"In the middle of difficulty lies opportunity"
-Albert Einstein
-Albert Einstein
Re: Joe Gayo's lab tour
I'm still collecting data (the chamber is still improving with loading and vacuum quality), but here are some general results:
60 kV, ~1M n/sec/mA (16.2M at 15mA, Q = 2.11 e-8!), 25 mTorr
I created this video to record results at 5mA (40 - 60kV), 22mTorr. https://youtu.be/1MLFN8FKvZc
60 kV, ~1M n/sec/mA (16.2M at 15mA, Q = 2.11 e-8!), 25 mTorr
I created this video to record results at 5mA (40 - 60kV), 22mTorr. https://youtu.be/1MLFN8FKvZc
- Richard Hull
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Re: Joe Gayo's lab tour
Super video!
Richard Hull
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.
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.
Re: Joe Gayo's lab tour
My -100kV @ 20mA power supply arrived on Friday ...
Several Observations -
- The chamber can support 90kV (so far ... more conditioning may improve)
- I measure about 2E+6 n/sec/mA at 90kV ... multiple 3.6E+7 runs (90kV, 18mA, 19 mTorr)
- Need to reposition detectors as not to saturate (110 bub in 6 seconds, 12.7 cm)
Several Observations -
- The chamber can support 90kV (so far ... more conditioning may improve)
- I measure about 2E+6 n/sec/mA at 90kV ... multiple 3.6E+7 runs (90kV, 18mA, 19 mTorr)
- Need to reposition detectors as not to saturate (110 bub in 6 seconds, 12.7 cm)
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Re: Joe Gayo's lab tour
Your most recent graph shows some "oscillation" / quantized steps, any Idea as to where this comes from?