Upgrade of the SCAN-3 Spectrometer at Nuclotron

The SCAN-3 spectrometer has been upgraded to the three-arm configuration. A new arm was added to the spectrometer in 2022. The arm represents a setup of six multilayer neutron detectors orientated under 90 deg to other arms. The main aim of the additional arm is the determination of background components of the studied processes with the registration of correlated pairs by the time-of-flight method (TOF). Moreover by the SCAN-3 spectrometer will be studied η -mesonic nuclei.