Tokamak Energy news

Point out news stories, on the net or in mainstream media, related to polywell fusion.

Moderators: tonybarry, MSimon

crowberry
Posts: 494
Joined: Sun Sep 08, 2013 6:34 am

Re: Tokamak Energy news

Postby crowberry » Mon Sep 17, 2018 3:57 pm

This is a Tokamak Energy abstract for the upcoming 60th Annual Meeting of the APS Division of Plasma Physics conference.

Abstract: YO5.00009 : Initial Operation of the ST40 Spherical Tokamak

Advances in High Temperature Superconductor magnet technology allow a significant increase in the toroidal field (TF), which has been found to improve confinement in STs. The combination of the high b that has been demonstrated in STs and the high TF that can be produced by HTS TF magnets opens a path to lower-volume fusion reactors, since fusion power is proportional to b2 Bt4 V (V is the plasma volume). Tokamak Energy is aiming to exploit this concept as a route to fusion energy production. A high field ST, ST40 (R=0.4-0.6m, R/a=1.6-1.8, Ip=2MA, Bt=3T, κ=2.5, tpulse~1-10sec, 2MW NBI), was partially assembled and an experimental campaign conducted between January and June 2018. The main aim was to test Merging/Compression (MC) start-up. Plasma currents up to 350kA at 0.8T were obtained. Following MC, plasma was sustained for up to 15ms, even without a solenoid. Experiments on MAST and TS3 show efficient ion heating due to reconnection and this has been confirmed on ST40, with Ti > 1keV measured using Doppler broadening spectrometry. Plasmas with H-mode signatures were observed. ST40 is being moved to a larger facility, able to accommodate NBI and neutron shielding. The experimental results, an outline of the parallel HTS R&D and future plans will be presented.


http://meetings.aps.org/Meeting/DPP18/Session/YO5.9

RERT
Posts: 120
Joined: Mon Jun 02, 2014 9:10 pm

Re: Tokamak Energy news

Postby RERT » Tue Nov 27, 2018 4:44 pm

https://www.tokamakenergy.co.uk/tokamak-energy-appoints-prof-laurence-glynn-williams-to-chair-its-new-regulatory-and-safety-committee/

On the face of it quite a heavyweight in the field. Looks like they mean business...or want to look that way...

crowberry
Posts: 494
Joined: Sun Sep 08, 2013 6:34 am

Re: Tokamak Energy news

Postby crowberry » Tue Dec 18, 2018 5:05 pm

Total funds raised for fusion venture Tokamak Energy exceeds £50M

https://www.tokamakenergy.co.uk/total-funds-raised-for-fusion-venture-tokamak-energy-exceeds-50m/

crowberry
Posts: 494
Joined: Sun Sep 08, 2013 6:34 am

Re: Tokamak Energy news

Postby crowberry » Mon Jan 14, 2019 4:04 pm

Jonathan Carling from Tokamak Energy gave the talk Strategies and Expectations for the 2020s at the 2018 Annual Meeting of the Fusion Power Associates.
http://firefusionpower.org/FPA18_Tok_Energy_CARLING.pdf

crowberry
Posts: 494
Joined: Sun Sep 08, 2013 6:34 am

Re: Tokamak Energy news

Postby crowberry » Tue Apr 16, 2019 8:00 pm

Tokamak Energy has successfully operated ST40 for the first time after the move:

Last year’s milestone achievement of 15 million degree temperatures in the ST40 tokamak was achieved with ST40 in our old building at 120 Olympic Avenue on Milton Park. Soon after, the whole tokamak was dismantled and moved to our new, larger facility. In just nine months it has been rebuilt, upgraded and operated again.

Last week we created plasma in ST40 and successfully repeated experiments from last year, demonstrating that ST40 was back to the level of performance attained before the move.

Additionally, we tested the toroidal field magnets after an upgrade to the power supplies. We ramped the current up to 125kA through the TF coils, producing a field of 1.5T at 0.4m, the highest ever magnetic field in a spherical tokamak.


When we begin ST40 experiments again later in the year it will be the start of our campaign towards 100 million degrees – fusion temperatures.

Skipjack
Posts: 6014
Joined: Sun Sep 28, 2008 2:29 pm

Re: Tokamak Energy news

Postby Skipjack » Tue Apr 16, 2019 10:04 pm

This is pretty cool. They have been making steady progress, though they are still behind their original schedule. Things will get really interesting once the HTSCs get put in. Melanie Windridge indicated recently that things with research on that is going quite well. They are still a top contender for the race to break even for me, much more so than the more hyped Commonwealth Fusion Systems. Don't get me wrong. CFS is cool and I really like what Dennis Whyte and his team at the MIT have been doing, but IMHO, TE is moving faster and the spherical tokamak has additional size advantages.

crowberry
Posts: 494
Joined: Sun Sep 08, 2013 6:34 am

Re: Tokamak Energy news

Postby crowberry » Thu Sep 05, 2019 7:36 am

Tokamak Energy exceeds target of 20 tesla with HTS Magnets

The last 12 months have seen very rapid developments in magnet technology at Tokamak Energy. The HTS programme of developing tokamak magnets from high temperature superconducting (HTS) materials runs alongside our ST40 programme and is an integral part of our plan to deliver commercial fusion energy.

On 3rd September 2019 at the 14th European Conference on Applied Superconductivity (EUCAS) conference in Glasgow, our Director of Technology Development, Rob Slade, announced that Tokamak Energy magnet engineers have succeeded in producing a magnetic field of 24.4 T in magnets made of high temperature superconducting material.

...

This is really good news! It will be interesting to learn how these new high performance HTS magnets behave after prolonged irradiation tests.
It will also be interesting to learn at some point where CFS is in their magnet development.

https://www.tokamakenergy.co.uk/tokamak-energy-exceeds-target-of-20-tesla-with-hts-magnets/

Skipjack
Posts: 6014
Joined: Sun Sep 28, 2008 2:29 pm

Re: Tokamak Energy news

Postby Skipjack » Thu Sep 05, 2019 12:24 pm

crowberry wrote:
This is really good news! It will be interesting to learn how these new high performance HTS magnets behave after prolonged irradiation tests.
It will also be interesting to learn at some point where CFS is in their magnet development.

https://www.tokamakenergy.co.uk/tokamak-energy-exceeds-target-of-20-tesla-with-hts-magnets/


It is great news! They are making really good progress. Now they need to make coils for their tokamak from those.
As for CFS. I know that the MIT has been collaborating with TE on development. It is possible that TE are sharing information with the MIT and thus CFS.
If not, then CFS is at least 2 years behind.


Return to “News”

Who is online

Users browsing this forum: No registered users and 3 guests