Institut "Jo?ef Stefan"
The Jo?ef Stefan Institute (IJS, JSI) (Slovene: Institut "Jo?ef Stefan") is the largest research institute in Slovenia. The main research areas are physics, chemistry, molecular biology, biotechnology, information technologies, reactor physics, energy and environment. At the beginning of 2013 the institute had 962 employees, of whom 404 were PhD scientists.
The mission of the Jo?ef Stefan Institute is the accumulation and dissemination of knowledge at the frontiers of natural science and technology for the benefit of society at large through the pursuit of education, learning, research, and development of high technology at the highest international levels of excellence.
The institute was founded by the State Security Administration (Yugoslavia) in 1949 for atomic weapons research. Initially, the Vin?a Nuclear Institute in Belgrade was established in 1948, followed by the Ru?er Bo?kovi? Institute in Zagreb in 1950 and the Jo?ef Stefan Institute as an Institute for Physics in the Slovenian Academy of Sciences and Arts. It is named after the distinguished 19th century physicist Josef Stefan (Slovene: Jo?ef Stefan), best known for his work on the Stefan-Boltzmann law of black-body radiation.
IJS is involved in a wide variety of fields of scientific and economic interest. After close to 60 years of scientific achievement, the institute has become part of the image of Slovenia.
Over the last 60 years it has created a number of important institutions, such as the University of Nova Gorica, the Jo?ef Stefan International Postgraduate School and the Ljubljana Technology park.
The institute has facilities in two locations. The main facilities and the headquarters are on Jamova 39 in Ljubljana, the other location is the Institute's Reactor Center Podgorica located in Brinje, Dol pri Ljubljani near Ljubljana.
The institute's Podgorica Reactor Center is home to a pool type research reactor. The General Atomics TRIGA Mark II reactor is rated for a nominal 250 kW thermal. The reactor was first licensed in 1966 and is expected to continue operation at least into the 2030s.
The Central Radioactive Waste Storage of Slovenia is co-located at the institute's reactor facility. This facility is used for storage of the low and intermediate level solid radioactive waste from the Podgorica Reactor Center and other, non-institute small waste producers such as medical, research, and industrial applications of ionising radiation.