The electromagnet for a polarized neutron reflectometer sample of the IR-8 reactor of NRC "Kurchatov institute"

The electromagnet for a polarized neutron reflectometer (RPN) sample node is developed and manufactured for installation on the N3 neutron guide of the IR-8 reactor in the NRC "Kurchatov Institute". The results of the calculation and the experimental data of measurements of the magnetic parameters of the electromagnet created for the node of the polarized neutron reflectometer sample are presented. A special feature of this electromagnet is the increased requirements for the magnitude (200 mT) and the magnetic induction homogeneity (the maximum deviation of the direction of the induction vector from the vertical is no more than 2%), as well as compactness. The estimated characteristics of the magnet are confirmed by the results of experimental measurements: the calculated values of magnetic field induction and its homogeneity almost coincide with the experimental data.