A neutron field monitoring system for collider experiments

Abstract

A monitoring system for intense (up to 10⁵ neutrons/(cm² s)) neutron fluxes with energies as high as 15 MeV has been developed for long-term operation in strong magnetic and radiation fields of collider experiments. The system is used to monitor the radiation shielding efficiency, estimate the radiation degradation of active elements of experimental setups, and perform additional independent monitoring of the accelerator luminosity. The system has been tested and put into operation at the Compact Muon Solenoid (CMS) experimental setup of the Large Hadron Collider (LHC).