Some results from the ladder 0

RUNS ANALYSED : 4150004 and 4150005 (pp, no field) 15k events from the event pool. Comments are below the figures

Landau distributions

Landau distributions on P and N side. For the N side the landau distribution peaks at the right place (50 ADC counts) while for the P side it peaks at 25 ADC counts -> pb on the timimg of the hold signal ? Or of the +/-2 V biasing of the chips ?

Pulse Height Correlations

Despite the low level of signal on P side, the charge correlation of the double sided SSD is observable.

Signal_over_noise_distributions

The signal/Noise ratio peaks at ~15 for both sides.

Strip ID correlations

Strip number of the cluster on the N side vs strip number of the cluster on the P side. Shows that we reconstruct the hits at the right place (a given strip on one side crosses 15 strips on the other side).

Lilian MARTIN18-june-2003