Electronic Components and Systems for the Control of the LHC Machine

The present estimation of the LHC underground control electronics gives a total of 10.400 crates of which some 4.400 will be connected to the machine control network. Electronic equipment will be housed under the cryostats, along the tunnel, in the alcoves and in the galleries parallel to the machine tunnel. In the regular arcs and in the dispersion suppressers areas the radiation level is expected to be relatively low. But, despite this low radiation level, radiation tests results obtained in previous years demonstrate that all electronic equipment needs to be qualified in a test facility providing an LHC like radiation environment. The radiation qualification of all tunnel electronics is essential in order to guaranty a reliable operation over the lifetime of the machine. The object of this paper is to give a review of the various electronic systems as they are planned today and to provide simulation results concerning the radiation environment of the CERN on-line test facility used for qualification of electronic component and systems. This paper is an update and an extension of the presentation made at the 5th Workshop on Electronics for LHC Experiments held in Snowmass in September 1999.