Old enough to remember the early excitement about the discovery of the first HTS materials. Now a few decades later get to watch a TH-cam video of someone testing a mass-produced HTS tape, showing how it outperforms copper and making it look almost routine. Very impressive!
On my last day at HTS-110 ltd, I was resin impregnating the 1000th HTS coil we had made to incorporate into an HTS device. Just because you don't know of something doesn't mean that something doesn't exist.
Would you please direct me to some of your videos that further explain the connection between the applied external magnetic field and the current carrying capability? Thank you
Commonwealth Fusion Systems (CFS) has left many fusion fans with the impression that their high temperature superconductor coils will solve all the problems that nuclear fusion energy research has encountered since the experiments began in the 1950s. This was a time before many of these young experimenters parents were born. Typically, they have no interest in exploring all the difficulties that were experienced prior to them getting involved in such projects.
Greetings there, Please forgive my ignorance as I am way out my depth here. Can this HTS magnet be used instead of copper for a power dense ev motor without a need for cooling?
No. You would, infact need more cooling as high temperature is still only relative to the first materials discoverd to produce super conduction. They're still chilled, down to liquid nitrogen, some -195 Celsius
The last HTS device I was on the build team of would take the 1cm tape down to 4° Kevin and was able to rotate the tape in a 1.5 T field in 5° increments. It is currently in Germany in a HTS manufacturers facility.
@@AtlasReburdened try running thousands of amps through a small power supply and see what happens lol. Though you're right that it don't gotta be as big as one that supplies high voltage as well as current
@@doctorpurple5173 No need for me to "try". All I'd need to do is go down to my garage, plug in my 4000VA 3Voc transformer, and find a thick copper bar to short the contacts with. It's about the size of 2 open hands and granted, it would melt it's own insulation if this were sustained, but it wouldn't need too much beefing up to be able to handle 1000A at a respectable duty cycle.
@@AtlasReburdened maybe if you submerged your transformer in liquid nitrogen it could sustain the current for long enough. But I assume they're using a power supply that is not melting itself into a puddle and is also not submerged in liquid nitrogen
For a test like this... Good question. The busbars would present ohmic resistance, so the current going in would just follows ohms law. With a fat bus bar at cryogenic temps, you would not need much potential difference between the two to get 1000 amps. If you're in a super conducting loop, as in a magnet, a small section of the loop is warmed above the superconduction temperature. Perhaps a larger copper clamp is there to handle a huge current, but only a tiny input voltage is required to put in hundreds of amps. The magnet charges up over time as more and more current goes into the super conducting loop. The energy from the power source is put into the magnetic field. No energy is really used to make the current, odd as it would seem, moving charge has no energy outside of its magnetic field.
Oh and once the superconductor current saturates, just cool down that warmed section below the critical temperature and the magnetic fields just stay in place, as long as you maintain temperature.
Personally, I really enjoy watching these videos and getting an idea what is going on at Tokamak. Unfortunately, this “avenue of information” has gone “dark” since this last video. Having obtained my materials science degree at Oxford over 40 years ago, and having worked in commercial computer system ever since, I miss all the “tales from the bleeding edge” of science. The media is extremely poor at getting across what is happening in science in the U.K. Running such a reactor introduces the world to a potential new domain of materials science issues. It is now a race between you finishing the ST40 and getting it running and project Binky finally producing a road worthy “mini”. Am I asking too much for an update video of some sort? Or are you now running the ST40 at a “sensitive stage” and very soon hoping to announce major progress? Just asking.
Dude is testing superconducting tape for use in nuclear fusion reactors... and thinks that current where the charge carriers are free electrons flows from positive to negative.
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Old enough to remember the early excitement about the discovery of the first HTS materials. Now a few decades later get to watch a TH-cam video of someone testing a mass-produced HTS tape, showing how it outperforms copper and making it look almost routine. Very impressive!
Aint seen anywhere selling it so I aint sure how it is mass produced.
WOW yeah its so amazing to see how exponentially fast technology grows. :D
On my last day at HTS-110 ltd, I was resin impregnating the 1000th HTS coil we had made to incorporate into an HTS device.
Just because you don't know of something doesn't mean that something doesn't exist.
@@chasthanhburns123 See my comment to Rogers claim.
@@augurelite Just because you don't know of something doesn't mean that something doesn't exist.
Would you please direct me to some of your videos that further explain the connection between the applied external magnetic field and the current carrying capability? Thank you
Nice vidéo !
Merci
Commonwealth Fusion Systems (CFS) has left many fusion fans with the impression that their high temperature superconductor coils will solve all the problems that nuclear fusion energy research has encountered since the experiments began in the 1950s. This was a time before many of these young experimenters parents were born. Typically, they have no interest in exploring all the difficulties that were experienced prior to them getting involved in such projects.
Greetings there,
Please forgive my ignorance as I am way out my depth here.
Can this HTS magnet be used instead of copper for a power dense ev motor without a need for cooling?
No. You would, infact need more cooling as high temperature is still only relative to the first materials discoverd to produce super conduction. They're still chilled, down to liquid nitrogen, some -195 Celsius
The last HTS device I was on the build team of would take the 1cm tape down to 4° Kevin and was able to rotate the tape in a 1.5 T field in 5° increments.
It is currently in Germany in a HTS manufacturers facility.
good explanation of the tech, thanks
out of interest, what equipment do you use to product a controlled 0 to +1000A dc supply??
A BIG power supply lol
@@doctorpurple5173 It shouldn't really need to be all that big since it isn't required to operate at any appreciable voltage.
@@AtlasReburdened try running thousands of amps through a small power supply and see what happens lol. Though you're right that it don't gotta be as big as one that supplies high voltage as well as current
@@doctorpurple5173 No need for me to "try". All I'd need to do is go down to my garage, plug in my 4000VA 3Voc transformer, and find a thick copper bar to short the contacts with. It's about the size of 2 open hands and granted, it would melt it's own insulation if this were sustained, but it wouldn't need too much beefing up to be able to handle 1000A at a respectable duty cycle.
@@AtlasReburdened maybe if you submerged your transformer in liquid nitrogen it could sustain the current for long enough. But I assume they're using a power supply that is not melting itself into a puddle and is also not submerged in liquid nitrogen
Just wondering, what voltage was used to push current through the tape?
For a test like this... Good question. The busbars would present ohmic resistance, so the current going in would just follows ohms law. With a fat bus bar at cryogenic temps, you would not need much potential difference between the two to get 1000 amps. If you're in a super conducting loop, as in a magnet, a small section of the loop is warmed above the superconduction temperature. Perhaps a larger copper clamp is there to handle a huge current, but only a tiny input voltage is required to put in hundreds of amps. The magnet charges up over time as more and more current goes into the super conducting loop. The energy from the power source is put into the magnetic field. No energy is really used to make the current, odd as it would seem, moving charge has no energy outside of its magnetic field.
Oh and once the superconductor current saturates, just cool down that warmed section below the critical temperature and the magnetic fields just stay in place, as long as you maintain temperature.
Amazing!
Awesome! :)
So what is the real materials used to make a high-temputer superconduter
REBCO usually , Rare Earth Barium Copper Oxide
Personally, I really enjoy watching these videos and getting an idea what is going on at Tokamak.
Unfortunately, this “avenue of information” has gone “dark” since this last video.
Having obtained my materials science degree at Oxford over 40 years ago, and having worked in commercial computer system ever since, I miss all the “tales from the bleeding edge” of science. The media is extremely poor at getting across what is happening in science in the U.K. Running such a reactor introduces the world to a potential new domain of materials science issues.
It is now a race between you finishing the ST40 and getting it running and project Binky finally producing a road worthy “mini”.
Am I asking too much for an update video of some sort? Or are you now running the ST40 at a “sensitive stage” and very soon hoping to announce major progress? Just asking.
Công việc của bạn
Any one else see the pink Dyson hairdryer in their rig?
Well, a Dyson hairdryer is a must because they don't yet have a Dyson sphere
Seems like he messed up the right hand rule at 1:33 :P
Dude is testing superconducting tape for use in nuclear fusion reactors...
and thinks that current where the charge carriers are free electrons flows from positive to negative.
Current flow nomenclature was invented before the discovery of the electron, I'm sure the nuclear scientist knows which way the electrons are going