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Visits to Research Infrastructures

Jožef Stefan Institute

The Jožef Stefan Institute is the leading Slovenian scientific research institute, covering a broad spectrum of basic and applied research. The staff of about 1200 specializes in natural sciences, life sciences and engineering.

The subjects concern production and control technologies, communication and computer technologies, knowledge technologies, biotechnologies, new materials, environmental technologies, nanotechnologies, and nuclear engineering. The mission of the Jožef Stefan Institute is the accumulation – and dissemination – of knowledge at the frontiers of natural science and technology to 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.

TRIGA Mark II research reactor, Jožef Stefan Institute, Brinje 40, Dol pri Ljubljani, Slovenia

Jožef Stefan TRIGA research reactor is the only research reactor in the country. It was constructed in the 1960s and since then, it has been used for research, training and isotope production. It is an open pool-type reactor with a maximum thermal power of 250 kW. It can also operate in pulse mode, achieving a peak power of 1 GW.

Safety and security guidelines for specific sites: no shorts, no high-heels, no open shoes, ID needed. All visitors need to fill in the attached form.


"Microanalytical Center" (MIC) with the 2 MV tandem ion accelerator "Tandetron", Jožef Stefan Institute, Brinje 40, Dol pri Ljubljani, Slovenia

2 MV tandem ion accelerator “Tandetron” is the heart of the Infrastructure Research Center “Microanalytical Center” (MIC). Tandetron is the only research accelerator in Slovenia. Acceleration of ions takes place electrostatically in a direct electric field, which is provided by a rectifier with a voltage of up to 2 MV (two million volts). The accelerator is one of the most technologically advanced electrostatic accelerators, the high voltage is generated in a rectifier with semiconductor diodes, without mechanically moving parts. 

The rectifier is very stable – at an output voltage of 2 million volts, the voltage instability is only about 100 V. Microanalytical centre is specialized in use of accelerated ion beams for research in materials, fusion, biology, medicine, space and archeometry. Among the six operating beamlines, three are dedicated to the applications of high energy focused ion beams, equipped with dedicated ion focusing lenses to bring the beam sizes down to sub-micrometer dimensions.

Safety and security guidelines for specific sites: 
List of the visitors to be provided in advance.

Jamova cesta 39, 1000
Ljubljana, Slovenia