Reproducing in a man-made machine the physical reactions that occur at the core of the Sun has been the aim of fusion research for the past 60 years.
Six years after the 9 November 1991 shot that produced fusion energy for the first time in history, JET achieved a record of 16 MW that still holds to this day. Pictured in this 1997 photograph are Martin Keilhacker (right), at the time JET director, and his his two deputies (center) Alan Gibson and Jean Jacquinot.
However in order to avoid an excess activation of the machine's components, JET operators had deliberately opted for a "lean" mixture of hydrogen isotopes: 90% deuterium and only 10% radioactive tritium.
Rich Hawryluk, who was to head the ITER Administration Department from 2011 to 2013, is seen here in December 1993 at PPPL, celebrating TFTR's first deuterium-tritium shot. One year later the US machine was to pass a symbolic threshold with a production of 10 MW of fusion power.