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Something of a sad moment for infrared astronomy has come with the death of the European Space Agency's powerful space telescope Herschel.
Vital helium coolant has already run out. And when its thrusters' fuel tanks are finally exhausted on Monday, the giant eye on the sky will be switched off for ever.
But the work of the hugely successful instrument, with its 3.5 metre mirror, nearly 2 million km from Earth in the depths of space, continue to bring exciting discoveries.
The latest to be revealed is that the amount of cool hydrogen gas within our Milky Way galaxy that forms a reservoir that will fuel new stars has been hugely underestimated.
At the Korea Institute of Fusion Energy (KFE), the KSTAR tokamak recommenced operations in December after a major upgrade to replace the…
KSTAR aims for longer plasmas
At the Korea Institute of Fusion Energy (KFE), the KSTAR tokamak recommenced operations in December after a major upgrade to replace the device's carbon divertor with a tungsten divertor.
According to an article on the KFE website, the original carbon divertors could take a thermal load of 5MW/m², whereas the tungsten divertor can take 10MW/m². The upgrade is critical to the goal of sustaining a 100-million-degree plasma for 300 seconds by 2026. Data from the operational campaign will be directly relevant to ITER, which will operate a tungsten divertor under similar plasma conditions in terms of shape and structure.
This testing campaign will continue through February 2024. Read more about the plans in this article in English on the KFE website, or in Korean in the Chosun Biz.