The conversition was performed with the help of L1MuTriggerScales class. It seems that this class assign for each bit a step of 2.5 degrees. This step is by far more than what a single sector covers, therefore the conversion seems to be not the proper one. A sector covers a range more or less of 62 degrees. So given we have 32 bits available for the Phi record, it is plausible to hypothesize that the range is indeed 1.9 degrees.
From the overlap of the two distributions, one can observe how using the 1.9 degrees step gives a better matching.
In fact, the pink distribution shows an asymmetry which I can explain by the fact that 2.5 degrees is a too big step and the PhiRaw is overestimated.
In conclusion, 1.9 degrees seems to be the proper step to use in the conversion.
Question : is then the eta step, since it is taken from the same L1MuTriggerScales class, the correct one?
I produced the scatter plot Delta Phi vs EtaRAW and then sampled along the EtaRAW :
-- GianPieroDiGiovanni - 18 Nov 2008
I | Attachment | History | Action | Size | Date | Who | Comment |
---|---|---|---|---|---|---|---|
png | DPhivsEta_pfx-chain.png | r2 r1 | manage | 6.3 K | 2008-11-24 - 12:20 | GianPieroDiGiovanni | |
png | Phi19vsPhiReco-chain.png | r2 r1 | manage | 8.0 K | 2008-11-24 - 12:48 | GianPieroDiGiovanni | |
png | Phi25vsPhiReco-chain.png | r2 r1 | manage | 8.3 K | 2008-11-24 - 12:48 | GianPieroDiGiovanni | |
png | deltaPhi-chain.png | r2 r1 | manage | 7.1 K | 2008-11-24 - 12:49 | GianPieroDiGiovanni | |
png | deltaPhi_19-chain.png | r2 r1 | manage | 6.7 K | 2008-11-24 - 12:46 | GianPieroDiGiovanni | |
png | deltaPhi_25-chain.png | r2 r1 | manage | 7.0 K | 2008-11-24 - 12:46 | GianPieroDiGiovanni | |
png | deltaPhi_Zm-chain.png | r2 r1 | manage | 6.4 K | 2008-11-24 - 12:47 | GianPieroDiGiovanni |
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