Solid state detectors used for the CERN Neutrino Flux Monitoring (NFM)

The CERN neutrino beam is monitored via the accompanying muon flux in the iron shield. Silicon radiation detectors are used for measuring this flux at several places in the shield. Special features of the electronics are the low noise cable connection to the remote preamplifier and the leakage current compensation. The precise calibration of the detectors allows detailed information on the neutrino flux. Some aspects of the NFM system are reported especially the electronic chain, the detectors and the calibration. Some of the capabilities for on-line beam control and off-line data analysis are shown. (3 refs).