Signal propagation in long wire chambers
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The propagation of signals in long proportional counters or multi-wire tracking chambers is simulated, using numerical solutions of the multi-wire telegraph equations. The results are compared to experimental data, recorded with a proportional counter and a multi-wire test chamber. The signal shape, the charge division ratio and, in the case of the drift chamber, also the cross talk between the wires, are well reproduced. Similar shapes for signals and their cross talk can be obtained with a properly chosen electrical termination. It is shown how data from a multi-wire chamber can then be corrected for cross talk. The effects limiting the precision of position measurements along the wires with the charge division method are discussed. The simulation was applied to the reconstruction of tracks measured with the OPAL JET chamber. © 2012 IOP Publishing Ltd and Sissa Medialab srl.
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Charge induction; Detector modelling and simulations II (electric fields, charge transport, multiplication and induction, pulse formation, electron emission, etc); Particle tracking detectors (Gaseous detectors); Wire chambers(MWPC, Thin-gap chambers, drift chambers, drift tubes, proportional chambers etc) Charge division method; Charge inductions; Drift tube; Experimental datum; Gaseous detectors; Modelling and simulations; Signal propagation; Telegraph equation; Counting circuits; Crosstalk; Drift chambers; Electric fields; Proportional counters; Telegraph; Wire; Ionization chambers
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