Abstract

The paper discusses the results of the calibration of two coronaneutron counters used to measure the total neutron yield from the plasma ofthe Globus-M2 tokamak. The calibration was carried out in the experimentalhall of the Globus-M2 facility using an AmBe source. During thecalibration, the source moved at a constant speed around the central solenoid in theequatorial plane of the vacuum chamber, and one of the detectors wasgradually moved away from the tokamak along a line with a constant toroidalangle. The dependence of the calibration coefficient obtained depending distance of the detector from the tokamak is presented. Thecalibration technique made it possible to separate the contributions from the direct neutron flux emitted by the plasma andfrom the flux of neutrons scattered on the elements of the experimentalhall in the detector signal. Keywords: neutron diagnostics, spherical tokamak, neutron yield, neutron counters, thermonuclear fusion\

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