Talk:Joint European Torus

Untitled

What is the Microsoft JET engine? (apart form being "the thing that makes MS Access crash") -- Tarquin 08:20 5 Jul 2003 (UTC)

Most powerful reactor?

JT-60's wikipedia entry claims that it is "the world's most powerful fusion reactor." This contradicts the claim in this article that JET "is the largest and most powerful nuclear fusion reactor yet built." Unless they're both equal in power, they can't both be the most powerful... TerraFrost 04:34, 7 Mar 2005 (UTC)

It's so hard to define 'powerful'. Powerful in what way? Maximum heating capability? Alpha-particle self-heating? Total fusion power liberated? I think that unless one is being very specific, it's best to avoid using the term. Dan100 19:55, Mar 7, 2005 (UTC)

The last sentence of the first paragraph appeared confusing to me: "It was the largest machine in production when the JET design began." How could JET be the largest machine in production when the design began? :-) I made it clearer by changing to: "At the design stage JET was larger than any such machine then in production." This omits the previous entry's reference (as shown). Unfortunately the link associated with that now seems out of date. CatNip48 (talk) 19:11, 21 August 2021 (UTC)

flywheels

One of the interesting design decisions in JET was to not use superconducting magnets (for reasons of cost). Instead, the magnets are made from thick copper, with internal water pipers for cooling. They are powered via the flywheel generators. The amount of energy stored in the flywheels (and the amount of temperature rise tolerable for the magnets) is the main reason why JET cannot operate for more than 30 seconds at a time. — Preceding unsigned comment added by 82.10.237.122 (talk) 23:59, 1 May 2014 (UTC)

We should mention that (with a source) - maybe in a new section on critical design decisions. I estimate it takes about 20 mins to spin up the flywheels (at 8.8 MW each), and presumably less than an hour to re-cool the coils since they can average 22 shots/day. - Rod57 (talk) 19:50, 5 December 2015 (UTC)

The flywheels are maintained at half speed (112 rpm) and are accelerated to operational speed prior to pulse countdown. Acceleration is 13 rpm per minute to a speed calculated to be sufficient to deliver power for the scheduled pulse. Jkgoff (talk) 18:45, 8 September 2022 (UTC)

The mass units need to be consistent, or at least clarified. Is the mass unit a metric tonne or an Imperial ton? — Preceding unsigned comment added by Togo59 (talk • contribs) 18:18, 7 July 2024 (UTC)

Image size

Again, as so often in Wikipedia, here a "trap" of an clickable image (the top right image, link https://en.m.wikipedia.org/wiki/File:JointEuropeanTorus_external.jpg), that does NOT appear in an expected bigger size then (would expect full-screen best), but in that near stamp-size format again. Disappointing for users, lost time, annoying and distracting at least me from using Wiki for the next time. Maybe an iPadOS problem (latest version)? 2001:16B8:261D:9800:CD61:C01E:86FA:FDDF (talk) 14:38, 1 July 2022 (UTC)