PID techniques: Alternatives to RICH methods

摘要: In this review article we discuss the recent progress in PID techniques other than RICH methods. particular mention Transition Radiation Detector (TRD), dE/dx cluster counting, and Time Of Flight (TOF) techniques. The TRD technique is mature has been tried many hadron colliders. It needs space though, about 20cm of detector radial for every factor 10 {pi}/e rejection power, tends to make such detectors large. Although counting an old idea, it was never a real physics experiment. Recently, there are efforts revive SuperB experiment using He-based gases waveform digitizing electronics. A almost 2 improvement, compared classical performance, possible principle. However, complexity data analysis will be substantial. TOF well established, but introduction new fast MCP-PMT G-APD creates possibilities. seems that resolutions below 20-30ps may at some point future with relatively small systems, perhaps could pushed down 10-15ps very assuming one can solve systematic issues. cost, rate limitation, aging cross-talk multi-anode devices high BW problems. There several groups working on these issues, so likely. Table 6 summarizes author's opinion pros cons various presented paper based their operational capabilities. We refer reader Ref.40 discussion more general limits from view.