The high flux pulsed reactor IBR-2 in Frank Laboratory of Neutron Physics at Joint Institute for Nuclear Research (FLNP JINR) in Dubna, Russia is one of the most powerful neutron sources in Eastern Europe. From 2006 to 2010 the reactor and partly its spectrometers were modernized. The produced neutrons are now available for the world-wide scientific community for research purposes. The mean power of 2MW provides an average thermal neutron flux at the surface of the moderator of ~ 1013 n/cm2/s and a maximum flux of ~ 1016 n/cm2/s in burst.
A more detailed description of the parameters of the modernized IBR-2 reactor, current status and prospects for the development of its instrumentation, as well as the principles of the user program of the FLNP JINR and information for users are given. Finally general information as well as examples of molecular dynamics studies is presented.