Search found 6338 matches

by Skipjack
Wed Oct 13, 2021 1:25 pm
Forum: News
Topic: "Former fusion scientist on why we won't have fusion power by 2040"
Replies: 15
Views: 947

Re: "Former fusion scientist on why we won't have fusion power by 2040"

...and it was very helpful! Winding back to the question above, from the point of view of operating conditions Qsci goes from 1 to Infinity in a reasonably narrow range of nt. Qsci = 20 is very close to Q=Infinity in terms of operating conditions. So based on the paper my answer to my question woul...
by Skipjack
Tue Oct 12, 2021 8:13 pm
Forum: News
Topic: Tokamak Energy news
Replies: 148
Views: 157728

Re: Tokamak Energy news

This is an explainer on the article on 'partial insulation HTS magnet technology' mentioned above, which is good because I needed one... https://www.tokamakenergy.co.uk/tokamak-energys-advances-in-partial-insulation-hts-magnet-technology/ Very cool! If they have the coils in 2022, then they will be...
by Skipjack
Wed Oct 06, 2021 1:59 pm
Forum: News
Topic: "Former fusion scientist on why we won't have fusion power by 2040"
Replies: 15
Views: 947

Re: "Former fusion scientist on why we won't have fusion power by 2040"

After I posted above I decided that the answer for QMax was probably ‘infinite’. Focussing on a DT plasma, 20% of fusion power is charged particles, which one would think would heat the plasma. It’s tempting to think that Brehmstralung losses need to be replaced, but that’s bunk: the device is ther...
by Skipjack
Wed Oct 06, 2021 1:52 am
Forum: News
Topic: More Helion Energy news....
Replies: 352
Views: 222600

Re: More Helion Energy news....

I am surprised and confused by this as well. I don't think that David knows what is going on either. Last time we talked, he suspected that the list was just not complete yet.
by Skipjack
Tue Oct 05, 2021 4:05 pm
Forum: News
Topic: "Former fusion scientist on why we won't have fusion power by 2040"
Replies: 15
Views: 947

Re: "Former fusion scientist on why we won't have fusion power by 2040"

I made myself watch this a few days ago. Ego and pessimism aside, the schematic on the need for Q>20 for a Tokamak was interesting. That was from generation efficiency 50% (not unkind) and power conversion to plasma injected power 10% (no idea if that makes sense). So Q=20 just drives the machine w...
by Skipjack
Tue Oct 05, 2021 4:02 pm
Forum: News
Topic: Focused Energy
Replies: 3
Views: 246

Re: Focused Energy

That is great for them. Let's hope they can make it work. Lasers have come a long way since NIF was first built. So there is a good chance that they can do it. The efficiency and repetition rate of lasers in ICF is not the only major issue. A very hard problem is to develop an ICF target that is ch...
by Skipjack
Sun Oct 03, 2021 8:11 pm
Forum: News
Topic: More Helion Energy news....
Replies: 352
Views: 222600

Re: More Helion Energy news....

I second you critique that this video only focuses on JET, ITER and NIF. No mentioning of the fusion startups :(
I fear that they won't be taken seriously until one of them at least announces notional break even.
by Skipjack
Sun Oct 03, 2021 7:35 pm
Forum: News
Topic: More Helion Energy news....
Replies: 352
Views: 222600

Re: More Helion Energy news....

I will watch that video later, when I have more time. In case of Helion, I think they are planning to operate their own machines and just sell the power, rather than building them for the utilities.
by Skipjack
Sun Oct 03, 2021 7:34 pm
Forum: News
Topic: Focused Energy
Replies: 3
Views: 246

Re: Focused Energy

That is great for them. Let's hope they can make it work. Lasers have come a long way since NIF was first built. So there is a good chance that they can do it.
by Skipjack
Fri Oct 01, 2021 4:30 pm
Forum: News
Topic: More Helion Energy news....
Replies: 352
Views: 222600

Re: More Helion Energy news....

Trenta has been updated with a new divertor:
https://twitter.com/Helion_Energy/statu ... 6590249984
Trenta is firing again after making upgrades to our second divertor! Back to testing the efficiency and reliability of our systems.
by Skipjack
Fri Oct 01, 2021 1:19 pm
Forum: News
Topic: Tokamak Energy news
Replies: 148
Views: 157728

Re: Tokamak Energy news

Glad to see the UK leading the way here!
by Skipjack
Sun Sep 19, 2021 3:48 pm
Forum: News
Topic: Z-Pinch Renaissance
Replies: 208
Views: 150150

Re: Z-Pinch Renaissance

Yes, I saw that one (I even think I posted it here, didn't I). I think they have a chance to achieve Q>1 before the 2023 deadline IF everything goes really well. 2023 is still pretty soon, though. I think that the 2023 date in the APS abstract is a pretty solid base for us to base our expectations o...
by Skipjack
Sat Sep 18, 2021 12:41 pm
Forum: News
Topic: Z-Pinch Renaissance
Replies: 208
Views: 150150

Re: Z-Pinch Renaissance

In the interview linked above 'Scientific breakeven', Q>1, is expected as early as the end of this year, and that requires 600kA. So they must have the new upgraded device in service. The building that they just got 'the keys' for is to be used for development of systems needed for commercial, whic...
by Skipjack
Sat Sep 18, 2021 2:30 am
Forum: News
Topic: Z-Pinch Renaissance
Replies: 208
Views: 150150

Re: Z-Pinch Renaissance

I believe neutral beam injection along the axis of current flow would provide the shear needed to disrupt the kink and sausage plasma instabilities, and since the plasma is less than a millimeter in diameter during compression would nearly be the only way to do it. Perhaps that is why they recruite...