Electronic System for Measuring Kinetic Parameters of Pulsed Subcritical Assemblies

A. Bogdzel, M. Korobchenko, Yu. Pepuolyshev, A. Zhuravlev, V. Zhuchko

Joint Institute for Nuclear Research, Dubna, Russia

In FLNP JINR the continuous improvement of experimental techniques and the creation of new measuring systems necessary for conducting investigations of the IBR-2 pulsed reactor and new advanced pulsed neutron sources designed in FLNP, are carried out. In the paper a measuring system for studying kinetic parameters of reactor assemblies is described. The system is designed for use both in classical and modified Rossi-ѓó experiments (in a steady-state mode), and also for measurement and analysis of fast neutron pulse shape over a wide dynamic range with an error of 20 ns. The system uses ionization fission chambers for detecting thermal and fast neutrons. The paper gives a brief description of the system and basic technical characteristics of the devices included in its structure.