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A systematic study of rate capability in MWPCs (final analysis). D. Gonzalez-Diaz 16-10-2008. Set-up. Gain measurements (I). Gain measurements (II). The Mathieson model (I). The Mathieson model (II). Blanc's Law:. Rate capability at fractional gain drop F:. Typical rate curves.
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A systematic study of rate capability in MWPCs(final analysis) D. Gonzalez-Diaz 16-10-2008
The Mathieson model (II) Blanc's Law: Rate capability at fractional gain drop F:
Global fit to all curves: 6 (3mixtures x 2 pitches) parameters
Conclusions • Once one corrects for beam-size effects and if the nature of the drifting ion is known, the Mathieson formula has an enormous predictive power. • There is room for a further increase of pion suppresion without sacrifying the rate capability (increasing the gap h).