JET in close-up

The heat is on!

Protection of the new ITER-Like Wall is foremost in the thoughts of everyone working at JET at the moment. Eventually eleven CCD cameras will view different areas of the plasma facing surfaces using the near-infrared part of the spectrum to monitor for hot spots and to trigger appropriate actions. Nine […]

POETry in motion

JET has entered the second phase of commissioning, known as ‘Restart 2′, after successfully removing an elusive power supplies fault. Many of the algorithms used to control the plasma position and plasma current have been updated, and each feature has had to be tested thoroughly. The basic control tests are nearly […]

First Plasma – a huge success

   The daily restart meeting after lunch on Wednesday 24th August confirmed that the machine was ready for operation.  All the ‘readiness for operation’ forms had been signed and the final machine inspection had been carried out by a team of about 20 people in the morning.  Permission was given […]

Excitement builds up

If all goes well, JET is now less than a week away from first plasma operation with the new ITER-Like Wall and a sense of excitement is building up. It seems almost analogous to the launch of a spacecraft in that everything must work properly at the same time. This […]

Pulling everything together

Vacuum conditioning of the JET torus has been progressing. A month ago the torus had been heated to 200 degrees Celsius which is the limit for some of the in-vessel components when they are not water-cooled. Then it was cooled to below the boiling point of water, so that all […]

Proceeding according to plan

Restart activities continue according to plan. The torus has been pumped to high vacuum and baked to 200 degrees Celsius, which is the first stage of vacuum ‘conditioning’. This initial bake is carried out with all the in-vessel water cooled assemblies drained so that the vacuum facing components are dried […]

Starting the restart

With the end of the shutdown in-vessel tasks were complete and the main port doors had been closed and sealed. At that time three items still needed to be installed. One of these gives a brand new optical view of an area in the torus called the ‘lower hybrid launcher’. […]

This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014-2018 under grant agreement No 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission.

We use cookies to ensure that we give you the best experience on our website.