Magnetic system for controlling the spin of polarized neutrons
Berikov D. Ahmadov G. Kopatch Y. Novitsky V.
1 August 2022Institute of Physics
Journal of Instrumentation
2022#17Issue 8
A spin control magnetic system was developed and assembled at the JINR Laboratory of Neutron Physics (Dubna, Russia) and was tested with a beam of polarized neutrons at the POLI instrument of the FRM II reactor in Garching (Germany). This paper presents the principle of operation and a method for compensating the influence of external magnetic fields on polarization using this device. The system consists of three precession coils in a magnetic screen. The first coil allows, by changing the current in it, to ensure the rotation of the neutron spin by an arbitrary angle relative to the magnetic field inside the coil. The remaining two coils are designed to compensate for the effect of scattered magnetic fields on the beam polarization, and to preserve the polarization vector direction.
Instrument optimisation , Instrumentation for neutron sources , Neutron monochromators and transport , Polarisation
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Joint Institute for Nuclear Research, Joliot-Curie 6, Dubna, 141980, Russian Federation
Institute of Nuclear Physics, The National Nuclear Center of Kazakhstan, Ibragimova 1, Almaty, 050032, Kazakhstan
Azerbaijan National Academy of Sciences, CSSR and IRP, 9, B. Vahabzade Str., Baku, AZ1143, Azerbaijan
National Nuclear Research Center, Inshaatchilar 4, Baku, AZ1073, Azerbaijan
Institute for Theoretical and Experimental Physics of National Research Centre “Kurchatov Institute”, 25, Bolshaya Cheremushkinskaya str., Moscow, 117218, Russian Federation
Joint Institute for Nuclear Research
Institute of Nuclear Physics
Azerbaijan National Academy of Sciences
National Nuclear Research Center
Institute for Theoretical and Experimental Physics of National Research Centre “Kurchatov Institute”
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