Abstract
The LHC-B collaboration is in the process of designing a forward spectrometer, optimized for the detection of Beauty particles, to run at the LHC collider. One very crucial aspect of the design is the global multi-level trigger scheme, required to reduce the event rate from around 40 MHz (the LHC beam crossing rate) down to the foreseen recording rate of a few KHz. At Level-1, it is currently envisaged to implement high p{sub t} electron, muon and hadron triggers.The requirements for Level 1 are to accept, with zero deadtime, events at the 40 MHz rate, and to provide an answer within a couple of microseconds. The rejection rate for minimum bias events expected of Level 1 is of the order of one hundred. The 3D-Flow system can implement the above requirements in real time with zero dead-time giving the user the flexibility to change at later time the algorithm, including more signals in the decision process, and to upgrade incrementally the system with changes in granularity and/or segmentation.
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