SEVAN CRO PARTICLE DETECTOR FOR SOLAR PHYSICS AND SPACE WEATHER RESEARCH

The installation of the SEVAN CRO particle detector at Zagreb Astronom- ical Observatory was finished at the end of 2008. The detector is a fully autonomous unit, with the capability to send data via the Internet, and it is a part of the SEVAN (Space Environmental Viewing and Analysis Network), which includes detectors located at middle to low latitudes. Till to now the SEVAN modules are installed at Aragats Space Environmental Centre in Armenia (3 units), Bulgaria (Moussala) and Croatia (Za- greb). SEVAN detectors are use for simultaneous measurements of flux of most species of secondary cosmic rays born in the atmospheric cascade caused by primary ions and solar neutrons. These devices can be used for exploration of solar modulation effects on galactic cosmic rays. The main scientific aim is to the improve research of solar particle acceleration in the vicinity of the Sun by detecting highest energy solar cosmic rays giving additional secondaries detected by surface particle detectors and to improve researches of the space environment conditions.