A simple logo and a list of participating countries - or, in one case, a group of countries - appear on the flag of ITER.:
"Scientists from all over the world have come together in ITER to work toward a lofty goal: harness the energy produced by the fusion of atoms to help meet mankind's future energy needs. ITER is a large-scale scientific experiment intended to prove the viability of fusion as an energy source, and to collect the data necessary for the design and subsequent operation of the first electricity-producing fusion power plant. Launched as an idea for international collaboration in 1985, the ITER Agreement includes China, the European Union, India, Japan, Korea, Russia and the United States (...)."
Technical information is of course found on above website, here I should point out that this new plant is being built at Cadarache in the South of France.
To get back to the flag as it flies above the building site, seen on a clickable photo the colours of which ought to visually match those of the logo as found on ITER’s website - any deviation should be ascribed to France’s bright skies! The field of the flag is a rich yellow (egg?) the lower half of which is largely taken up by a white half-disk issuing from the lower horizontal edge; the name "iter" in yellow letters appears on that edge, shifted towards the fly; in the upper hoist corner are placed the names of "china / eu / india / japan / korea / russia / usa" in white letters, arranged vertically and left aligned.
The local (national) member organizations responsible for ITER support have their own logos which may appear on flags and whoever delves into them is bound to encounter a number of LOBs. Interestingly, former ITER logo’s may be found and these consist of a central name disk or space surrounded by the member’s flags
Of course with the present flag and colour scheme ITER assumes a character of its own although a list of members appearing on an organization’s flag will be frowned upon by many.