1.  offline code: changes/updates, open items, readiness  1 st data taking plans and readiness

2. C. Oppedisano, ALICE Offline Week, CERN 27 October 2009 DAs and Shuttle DAs  DAs installed at P2 have been successfully tested for all the foreseen run types but CALIBRATION_EMD (for which we need Pb beams) Shuttle preprocessor  DCS DP We still have some problems with some DCS DP (aliases not found, values not found) we are investigating with P. Chochula For the moment: retrieving of HV values skipped (values are not currently used in reconstruction) ZDC table position values (stored in alignment object) are no more found after last DCS update (under investigation with P.C.)  File ID After the latest AliRoot installation at P2 the files are correctly retrieved from the DAQ FXS (checked during last weekend injection test)  Savannah bugs #56128 and #56621 could be closed (reporting this problem for 2 different run types but the running DA is the same)

3. C. Oppedisano, ALICE Offline Week, CERN 27 October 2009 Settings for Shuttle RUN TYPEFILE IDPATHSOURCE STANDALONE_PEDESTALPEDESTALDATA$ZDC_DIR/ZDCPedestal.datLDC STANDALONE_PEDESTALPEDESTALHISTOS$ZDC_DIR/ZDCPedHisto.rootLDC STANDALONE_LASERLASERDATA$ZDC_DIR/ZDCLaserCalib.datLDC STANDALONE_LASERLASERHISTOS$ZDC_DIR/ZDCLaserHisto.rootLDC CALIBRATION_EMDEMDENERGYCALIB$ZDC_DIR/ZDCEnergyCalib.datLDC CALIBRATION_EMDEMDTOWERCALIB$ZDC_DIR/ZDCTowerCalib.datLDC All the remainingMAPPING$ZDC_DIR/ZDCChMapping.datMON RUN TYPEFILE IDPATHSOURCE CALIBRATION_MBMBCALIBRATION$ZDC_DIR/ZDCMBCalib.rootMON Coming soon…

4. C. Oppedisano, ALICE Offline Week, CERN 27 October 2009 Raw data streaming A new read out card (ZRC) for the ZDC has been tested Aims: reduce the readout dead time (factor 2 in readout speed) plan to use the multi-event buffer (factor 10 w.r.t. the old readout card that hasn’t the possibility to use this feature) Implications for offline code:  Changes in the raw data streaming to comply with the different data format (with the possibility to read both formats)  Updated AliZDCRawStream successfully tested during last weekend LHC injection test with the new readout card Decoding of 3 modules has been added to raw data streaming class VME scaler data (now in AliESDZDC class) trigger card info (it can be used to check the simulated trigger since it contains, among other info, the CTP trigger input sent by the ZDC) PU info (goes in the fESDQuality word written in ESD)

5. C. Oppedisano, ALICE Offline Week, CERN 27 October 2009 Reconstruction (1)  AliZDCReconstructor has been updated following Peter suggestions in order to comply with all the needed requirements (namely run reconstruction on CAF)  This implies the implementation of a DA + Shuttle preprocessor + OCDB object chain for CALIBRATION_MB run types (which means ONLY for A-A data!) we have to store the E ZDC vs. E ZEM correlation which is used to reconstruct centrality in A-A runs  Savannah bug #56253 opened to track the task status  p-p data reconstruction no physics signal to provide an energy calibration no trivial day 0 tower inter-calibration algorithm In ESD for p-p data we will have the ADC output, NO energy values (at least in the beginning)

6. C. Oppedisano, ALICE Offline Week, CERN 27 October 2009 Reconstruction  Reconstruction on CAF Tested following Cvetan’s latest instructions for September injection tests data PMT tower 1PMT tower 2 PMT tower 3 Common PM PMT tower 4 Trigger: ACORDE,EMCAL,T0,V0 Mainly pedestal acquired by ZDC Histos for neutron ZDC reconstructed spectra shown

7. C. Oppedisano, ALICE Offline Week, CERN 27 October 2009 ESD Double32_t fZDCN1Energy; // reconstructed energy in the neutron ZDC Double32_t fZDCP1Energy; // reconstructed energy in the proton ZDC Double32_t fZDCN2Energy; // reconstructed energy in the neutron ZDC Double32_t fZDCP2Energy; // reconstructed energy in the proton ZDC Double32_t fZDCEMEnergy; // signal in the electromagnetic ZDCs Double32_t fZDCEMEnergy1; // second EM Double32_t fZN1TowerEnergy[5];// reco E in 5 ZN1 sectors - high gain chain Double32_t fZN2TowerEnergy[5];// reco E in 5 ZN2 sectors - high gain chain Double32_t fZP1TowerEnergy[5];// reco E in 5 ZP1 sectors - high gain chain Double32_t fZP2TowerEnergy[5];// reco E in 5 ZP2 sectors - high gain chain Double32_t fZN1TowerEnergyLR[5];// reco E in 5 ZN1 sectors - low gain chain Double32_t fZN2TowerEnergyLR[5];// reco E in 5 ZN2 sectors - low gain chain Double32_t fZP1TowerEnergyLR[5];// reco E in 5 ZP1 sectors - low gain chain Double32_t fZP2TowerEnergyLR[5];// reco E in 5 ZP2 sectors - low gain chain Short_t fZDCParticipants; // number of participants estimated by the ZDC (ONLY in A-A) Short_t fZDCPartSideA; // number of participants estimated by the ZDC (ONLY in A-A) Short_t fZDCPartSideC; // number of participants estimated by the ZDC (ONLY in A-A) Double32_t fImpactParameter; // impact parameter estimated by the ZDC (ONLY in A-A) Double32_t fImpactParamSideA; // impact parameter estimated by the ZDC (ONLY in A-A) Double32_t fImpactParamSideC; // impact parameter estimated by the ZDC (ONLY in A-A) Double32_t fZNACentrCoord[2]; // Coordinates of the centroid over ZNC Double32_t fZNCCentrCoord[2]; // Coordinates of the centroid over ZNA UInt_t fESDQuality; // flags from reconstruction contains the info needed for 1 st physics analysis UInt_t fVMEScaler[32]; // counts from VME scaler scaler data has been moved into AliESDZDC class ONLY IN A-A!! implemented only for A-A

8. C. Oppedisano, ALICE Offline Week, CERN 27 October 2009 Offline calibration strategy STANDALONE_PEDESTAL and STANDALONE_PULSER runs  run once per machine filling, contain 10 3 -10 4 events and are not reconstructed  histograms are saved as reference data  initially we’ll have to look “manually” inside such data to check that automatic fit worked as expected until now this check has been performed and the values given by the fit performed in the DA were always good! this check takes few minutes to be performed  in case the DA+Shuttle fails it could become necessary to access raw data again (probably just at the beginning then, once the machinery is well understood the DA fit procedure can be improved from what we learn by looking into data) CALIBRATION_EMD run (only A-A)  AliZDCCalibTask implemented and committed  all the needed info are in ESD, therefore the task can be used in 2 nd pass reconstruction in case the values provided by the DA is not OK CALIBRATION_MB (only A-A)  again all the needed info is in the ESD, we have to provide a task (will be done as soon as DA + preprocessor update + new object for OCDB will be committed)

9. C. Oppedisano, ALICE Offline Week, CERN 27 October 2009 QA ZDC histos provided for non expert (experimental data case)  Raw data: signal the 4 hadronic calorimeters (for the 2 gain chains provided by the dual output ADC)  ESD: centroid over ZNC, ZNA signal the 4 hadronic calorimeters (for the 2 gain chains provided by the dual output ADC) Checker Different aim in p-p w.r.t. A-A  p-p data basic quality checks are implemented, to verify the equalization of the hadronic calorimeters: check whether |(  i PMQ i ) - PMC|/PMC < 15%  A-A data checks to verify the equalization of the hadronic ZDCs and to compare the response on both IP sides separately for ZNs and for ZPs: 2*| - |/( + ) < 10% 2*| - |/( + ) < 20% |(  i PMQ i ) - PMC|/PMC < 20%

10. C. Oppedisano, ALICE Offline Week, CERN 27 October 2009 Open issues Incoming deadlines Extract QA data from large MC production  expect finish date to be postponed by 2 weeks Testing of trigger simulation with raw data  expect finish date to be postponed by 2 weeks Still to be done  AMORE DQM (lack of manpower)  visualization code in AliEve

11. C. Oppedisano, ALICE Offline Week, CERN 27 October 2009 Opened Savannah bugs Bugs that could be closed bug #54567 crash in PbPbtest reconstruction  the code doesn’t crash anymore bug #56128 and #56621 preprocessor failure  the preprocessor doesn’t crash anymore Bug of not known status bug #53131 problem in reconstructing July injection test data Open bug to track status bug #56253 calibration for CALIBRATION_MB runs  work in progress

12. C. Oppedisano, ALICE Offline Week, CERN 27 October 2009 Plans for 1 st data taking  1 st ZDC data into ESD ADC values, no energy calibration (at least for the beginning)  offline calibration in p-p STANDALONE_PEDESTAL and STANDALONE_LASER runs  1 st physics analysis The word written in the ZDC ESD giving the pattern of fired ZDC detectors: 6 bits (1 for each calorimeter) will be used by the Birmingham group in order to estimate single diffractive process contribution to data. The exercise has been practiced with PDC09 simulated data.

13. C. Oppedisano, ALICE Offline Week, CERN 27 October 2009 ZDC readiness for 1 st p-p data  DA have been tested and are ready  Shuttle preprocessor works correctly  offline calibration procedure should be quick and straightforward  info needed for 1 st physics analysis is in ESD and has been tested with PDC09 production  the code still to be tested and/or committed is relevant only for A-A data taking The ZDC is ready for 1 st physics