Reveals the design of muon trigger electronics in high-radiation environments, emphasizing logic channel configurations and device durability.
The LHCb muon trigger system is based on logical channels. For some stations and/or regions the logical channels correspond to the DIALOG outputs, while other stations and/or regions require a combination (OR) of channels coming from more than one chamber or more than one DIALOG output channels. In these cases special boards called Intermediate Boards (IB) are used to generate the logical channel. The 152 IB to instrument the muon detector will be located outside the chamber on the racks near the apparatus. Because of the radiation level foreseen near the detector (@ 2 krad) radiation tolerant device must be used to implement the logic.
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Alessandro et al. (2003) studied this question.
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