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The LHCb experiment(Fig. 1), that is presently taking data at CERN (EuropeanCenter for Nuclear Research) Large Hadron Collider (LHC), aims at the study ofCP violation in the B meson sector. Its key elements is the Muon detector [1],which allows triggering, and muon identification from inclusive b decays. Theelectronic system (Fig. 2) of the whole detector is very complex and its Muondetector Experiment Control System (ECS) allows monitoring and control of anumber of Front-End boards in excess of 7000. The present system in charge ofcontrolling Muon detector Front-End (FE) Electronics consists of 10 Crates ofequipment; each crate contains two kinds of modules: a Pulse DistributionModule (PDM) and up to 20 Service Boards (SB) connected via a custom Backplanefor a total amount of about 800 microcontrollers[2]. LHCb upgrade is plannedfor 2018/19, which will allow the detector to exploit higher luminosityrunning. This upgrade will allow the experiment to accumulate more luminosityto allow measurements that are more precise. The main idea of the newarchitecture take advantage of the new CERN fast communication protocol GBT[3]developed for radiation environment leaving unchanged the huge connectivity tothe detector and the modularity of the system. The new chipset GBTx andGBT-SCA[4] developed at CERN and the availability of more powerful computersallow designing a new system with fast link to the detector. In the new system,the control unit are moved from the apparatus to the computers in control roominstead of the actual system where the low speed bus send high level commandsto intelligent unit in the detector.

Architecture of the LHCb muon Frontend control system upgrade