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Dear all,</div>
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Attached are the results of my analysis. As I said at the meeting, slops of track multiplicity as a function of the beam current are close to what we have observed for other data sets with different versions of the tracking code, decreasing by ~05-0.6% per
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On the "eff_curr.eps" the closed symbols are current RG-B data with the current trigger. The corresponding open symbols are from run 11372, current RG-B data with spring 2019 trigger. The open crosses are from a set of spring 2019 50 nA runs processed with
the same (current) code. </div>
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In the "theta_pos_eff.eps" ratio of angular distributions of positive track multiplicity at 50(20) nA over 10 nA is shown.</div>
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Finally, fmn.eps shows figure-of-merit for 2-track (+,-) and 3-track (+,+,-) events as a function of the beam current using the efficiency slopes from "eff_curr.eps". As can be seen, for 3-prong events we are OK at 45-50 nA. Note, this is only forward tracking.</div>
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Regards, Stepan</div>
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