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This comprehensive study analyzes the rate capability of Multi-Wire Proportional Counters (MWPCs), focusing on gain measurements and the Mathieson model. Key components include corrections for beam size dependence and comparisons between empirical data and theoretical curves. The findings indicate significant predictive power of the Mathieson formula when accounting for beam size effects, suggesting potential for increased pion suppression while maintaining rate capability. The study concludes with recommendations for further research and improvements in rate capacity.
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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).