Hi, I've just made a number of modifications to the multiplicity and centrality classes to incorporate a 200GeV calibration. I have also updated the ZDC classes to add the cfd methods that Hiro has worked on. Since the ZDC modifications change the date structure (with the addition of a cfd vertex), I have bumped the ClassDef for BrZdcRdo to 4. Although the CFD ZDC vertex has a broader distribution with respect to the TPM1 vertex, it is found to be more reliable at low ZDC multiplicity since there is less of a slewing correction. For the multiplicity calibration we only use the zdc vertex when a BB or TPM1 vertex can not be found, so the slewing correction is a significant issue. The si/tile/mult classes now all look for a run number from the run manager in their Init methods. They should be selecting a reasonable calibration depending on run number. For the 200 GeV data, the calibration is taken from run 4640. I will be adding calibrations for the later runs as soon as possible. However, let me know if there is a specific later run for which you need a centrality and I try to develop one. In general, I believe that only the pedestals are likely to shift significantly run-to-run, although there have been isolated cases of detector element going bad. There will be further refinement of the centrality calculations over the next few days as I iterate some of this stuff with the analysis Hiro is doing. Regards, Steve
This archive was generated by hypermail 2b30 : Mon Nov 12 2001 - 10:42:02 EST