History Review of Neutron Research in Pnpi

One of the oldest research reactors was launched over forty years ago. The WWR-M reactor started operating in December, 1959 at Petersburg Nuclear Physics Institute (PNPI) in Gatchina. Ever since it has been normally operating without replacement of the tank. Russia’s concern for this reactor as a stationary neutron source was significantly increased, when many research reactors were shut down after USSR break-up. The construction of a new high-flux reactor PIK is currently in progress at PNPI. According to expert estimations 70% of the works has already been done. However, the economical situation in Russia makes it difficult to estimate the date of launch. In connection with this the institute has made a decision to change the capabilities of the WWR-M reactor so that they comply with new standards of security requirements, and to prolong its operation. The WWR-M reactor is located in the Neutron Research Department (NRD) of PNPI. The institute has a large mechanical workshop for manufacturing the experimental equipment and the developed infrastructure. A cryogenic station for production of liquid nitrogen and helium is located 800 m away from the reactor. The institute is situated in a wood region about 3 km away from Gatchina and 50 km away from St. Petersburg. The institute facilities are: a dining place, a hotel (100 places), a sport complex with a swimming pool, bus and railway lines to St. Petersburg. The institute welcomes science visitors and collaborates with many institutes of Russia and foreign countries.