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On 15 February 2023, the researchers reached a new milestone: for the first time, they were able to achieve an energy turnover of 1.3 gigajoules in this device. This was 17 times higher than the best value achieved before the conversion (75 megajoules). The energy turnover results from the coupled heating power multiplied by the duration of the discharge. Only if it is possible to couple large amounts of energy continuously into the plasma and also remove the resulting heat, a power plant operation is possible.

The energy turnover of 1.3 gigajoule was achieved with an average heating power of 2.7 megawatts, whereby the discharge lasted 480 seconds. This is also a new record for Wendelstein 7-X and one of the best values worldwide. Before the completion works, Wendelstein 7-X achieved maximum plasma times of 100 seconds at much lower heating power.

Within a few years, the plan is to increase the energy turnover at Wendelstein 7-X to 18 gigajoules, with the plasma then being kept stable for half an hour.

https://www.cambridge.org/core/journals/journal-of-plasma-physics/article/abs/singlefieldperiod-quasiisodynamic-stellarator/9B2A5FDCCD7774E4F91BE45E75FDC6B0

A single-field-period quasi-isodynamic stellarator configuration is presented. This configuration, which resembles a twisted strip, is obtained by the method of direct construction, that is, it is found via an expansion in the distance from the magnetic axis. Its discovery, however, relied on an additional step involving numerical optimization, performed within the space of near-axis configurations defined by a set of adjustable magnetic field parameters. This optimization, completed in 30 s on a single CPU core using the SIMSOPT code, yields a solution with excellent confinement, as measured by the conventional figure of merit for neoclassical transport, effective ripple, at a modest aspect ratio of eight. The optimization parameters that led to this configuration are described, its confinement properties are assessed and a set of magnetic field coils is found. The resulting transport at low collisionality is much smaller than that of W7-X, and the device needs significantly fewer coils because of the reduced number of field periods.

https://arxiv.org/abs/2205.05797 https://arxiv.org/pdf/2205.05797.pdf

“This new development version of GIMP is a bit of a game-changer as it arrives with some long-anticipated CMYK-related features. The way they are implemented will make some users happy, but some users might feel annoyed. It’s got to do with early binding vs late binding…”

"This new development version of GIMP is a bit of a game-changer as it arrives with some long-anticipated CMYK-related features. The way they are implemented will make some users happy, but some users might feel annoyed. It’s got to do with early binding vs late binding..."

"This new development version of GIMP is a bit of a game-changer as it arrives with some long-anticipated CMYK-related features. The way they are implemented will make some users happy, but some users might feel annoyed. It’s got to do with early binding vs late binding..."

Instructions are in the this ticket: https://github.com/dracula/freecad/iss...