03 May 2004

Some plots are superceeded by subsequent ones...

Threshold pressures for Cerenkovs - red=muons, green=pions, blue=kaons

Presumably an event that fires only one cerenkov can only be a muon where one or other of the cerenkovs was being inefficient...

Summation of sigcorr ADC deposits along entire length of track (both ends)

muons                                                 ps muons
pions                                                 pions past pl40

I define a ps muon here simply as one which has a hit in the centre of the detector after for plane >= 59

Energy summation along track vs range

Same set of two plots as above but with a plane>30 cut to chop off the electrons that were creeping in...
There seems to be a pretty hard cut off between muons and electrons in range so I don't think this is cheating too much...

(number of hits along track / number of planes hit) vs range

muons                                                 ps muons
pions                                                 pions past pl40

Hoping to be able to cut out high multiplicity events (pions)

Same plot as above with finer granularity...

Same plot again in lego format...

Fit to energy summation of '1.8 GeV' and 'ps' muons... I think I can see the ps muons depositing more energy... I should probably fit to specific regions of the track next...

Stiffer cuts applied to separate out PS muons. Any event with a real hit in plane>=58 or that hit the edge strips at the back of the detector ( ps muons that multiply scatter ) counts as a PS muon.

Last Plane Hit is 53.5. It seems a bit high compared to what I remember from Monte Carlo but I need to double check with Jeff and Mike's recent stuff...

Expected range is about 51.2...

(number of hits in whole event / number of planes hit) vs range

Zoom of above plot