1 Reminder: Why reprocess? 2001-2002 data Reconstruction: DBV 12-14 DSTs: DBV 14-16 2004 data DBV-19 for reconstruction & DSTs, Run < 31690 DBV-20 for.

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Presentation transcript:

1 Reminder: Why reprocess? data Reconstruction: DBV DSTs: DBV data DBV-19 for reconstruction & DSTs, Run < DBV-20 for Run > What is gained by reprocessing? What complications arise? Analysis/MC compatibility, etc. What needs to be done to start?

2 Datarec changes DBV-14  19 dE/dx code for all streams (2002 data) DEID bank FILFO bias sample No BHABREJ cut in FILFO Downscaled golden Bhabha sample Many bha files deleted from tape library kpm stream - old algorithms eliminated, new dE/dx algorithm ksl stream - new KSTAG rad stream - min bias sample clb stream - bug fixes Bug fixed in dE/dx integration in VTXFIN (DBV-16) Mainly affects kpm stream: 2907 dkc DSTs < DBV-16

3 DBV-19  20 and beyond DBV-19  20:  s, boost values from HepDB BMOM(3) for all EvCl routines Technical points that don’t impact reconstruction quality Also true for DBV-14  19 lists: not included Further changes for DBV-21: Problems with dead-wire lists Thickness of DC wall  75 µm Cut DC hits with drift times > 2.5 µs Modifications to  streaming code

4 More reprocessing issues MC compatibility: Does reprocessing with a new version of datarec imply re-reconstructing MC files? reprocessing MC DSTs? Scripting: Need work on scripting to reprocess on batch queues

5 MC re-reconstruction? MC re-reconstruction possible Minor work on scripting needed Impact of dead-wire lists: Re-reconstruction of much/all MC Dead wires not masked for data reconstruction Re-reconstruction of much/all 2004 data Dead wires masked in 2004 data reconstruction No issue concerning MC compatibility in this case

6 MC development: Minor topics BP geometry for 2004  generator LSB insertion code CSPS/CELE element correspondence (?)

7 MC development: Major topics 1. Accidental cluster rates (SM) 2 weeks for module to delete excess clusters 6 weeks to reprocess MC DSTs if needed 2. Correlated noise in DC for charged kaon tracks (PDS) Problem and solutions under study 3. Regeneration/nuclear interactions (MA, GL) Problem and solutions under study 4. Energy scale calibration for EmC simulation (PG) Problem and solutions under study 5. DC tracking resolution (MM) 2 months to reparameterize errors and study resolution Need significant input for P. de Simone 6. EmC time distribution (CG) Report this meeting