SOLEIL SOLEIL SOLEIL ("Sun" in French) is a synchrotron facility near Paris, France. It performed its first acceleration of electrons on May 14, 2006. The name "SOLEIL" is a backronym for "Source optimisée de lumière d’énergie intermédiaire du LURE" (LURE optimised intermediary energy light source), LURE meaning "Laboratoire pour l'utilisation du rayonnement électromagnétique". The facility is run by a civil corporation held by the French National Centre for Scientific Research (CNRS) and the French Alternative Energies and Atomic Energy Commission (CEA), two French national research agencies. It is located in Saint-Aubin in the Essonne département, a south-western suburb of Paris, near
Sun Kosi Mahabharat Range and the Himalayas. Tamakosi, Likhu, Dudhkosi, Arun and Tamor are its left tributaries and Indravati is the right tributary. The average annual flow is 22 x 109 m3. The average sediment load is 54 x 106 m3. The Tamur and the Arun rivers join the Sun Kosi at Tribenighat to form the Saptkoshi, which flows through the Chatra Gorge across the Mahabharat Range on to the Gangetic plain. There are few more smaller tributaries of the Sun Kosi such as Rosi Khola, Junga Khola,and Sapsu Khola. In Nepali language, the word "sun" means gold and golden; and the