ZDC Offline Status Report C Oppedisano offline code

ZDC Offline Status Report C. Oppedisano Æ offline code: changes/updates, open items, readiness Æ 1 st data taking plans and readiness

DAs and Shuttle DAs Æ DAs installed at P 2 have been successfully tested for all the foreseen run types but CALIBRATION_EMD (for which we need Pb beams) Shuttle preprocessor Æ 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. ) Æ File ID After the latest Ali. Root installation at P 2 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) C. Oppedisano, ALICE Offline Week, CERN 27 October 2009

Settings for Shuttle RUN TYPE FILE ID PATH SOURCE STANDALONE_PEDESTALDATA $ZDC_DIR/ZDCPedestal. dat LDC STANDALONE_PEDESTALHISTOS $ZDC_DIR/ZDCPed. Histo. root LDC STANDALONE_LASERDATA $ZDC_DIR/ZDCLaser. Calib. dat LDC STANDALONE_LASERHISTOS $ZDC_DIR/ZDCLaser. Histo. root LDC CALIBRATION_EMD EMDENERGYCALIB $ZDC_DIR/ZDCEnergy. Calib. dat LDC CALIBRATION_EMD EMDTOWERCALIB $ZDC_DIR/ZDCTower. Calib. dat LDC All the remaining MAPPING $ZDC_DIR/ZDCCh. Mapping. dat MON Coming soon… RUN TYPE CALIBRATION_MB FILE ID MBCALIBRATION C. Oppedisano, ALICE Offline Week, CERN 27 October 2009 PATH $ZDC_DIR/ZDCMBCalib. root SOURCE MON

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: Æ Changes in the raw data streaming to comply with the different data format (with the possibility to read both formats) Æ Updated Ali. ZDCRaw. Stream 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 Ali. ESDZDC 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 f. ESDQuality word written in ESD) C. Oppedisano, ALICE Offline Week, CERN 27 October 2009

Reconstruction (1) Æ Ali. ZDCReconstructor 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 EZDC vs. EZEM correlation which is used to reconstruct centrality in A-A runs �Savannah bug #56253 opened to track the task status Æ 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) C. Oppedisano, ALICE Offline Week, CERN 27 October 2009

Reconstruction Æ Reconstruction on CAF Tested following Cvetan’s latest instructions for September injection tests data PMT tower 1 PMT tower 2 Trigger: ACORDE, EMCAL, T 0, V 0 Mainly pedestal acquired by ZDC Histos for neutron ZDC reconstructed spectra shown Common PM PMT tower 3 PMT tower 4 C. Oppedisano, ALICE Offline Week, CERN 27 October 2009

ESD Double 32_t f. ZDCN 1 Energy; // reconstructed energy in the neutron ZDC Double 32_t f. ZDCP 1 Energy; // reconstructed energy in the proton ZDC Double 32_t f. ZDCN 2 Energy; // reconstructed energy in the neutron ZDC Double 32_t f. ZDCP 2 Energy; // reconstructed energy in the proton ZDC Double 32_t f. ZDCEMEnergy; // signal in the electromagnetic ZDCs Double 32_t f. ZDCEMEnergy 1; // second EM Double 32_t f. ZN 1 Tower. Energy[5]; // reco E in 5 ZN 1 sectors - high gain chain Double 32_t f. ZN 2 Tower. Energy[5]; // reco E in 5 ZN 2 sectors - high gain chain Double 32_t f. ZP 1 Tower. Energy[5]; // reco E in 5 ZP 1 sectors - high gain chain Double 32_t f. ZP 2 Tower. Energy[5]; // reco E in 5 ZP 2 sectors - high gain chain Double 32_t f. ZN 1 Tower. Energy. LR[5]; // reco E in 5 ZN 1 sectors - low gain chain Double 32_t f. ZN 2 Tower. Energy. LR[5]; // reco E in 5 ZN 2 sectors - low gain chain Double 32_t f. ZP 1 Tower. Energy. LR[5]; // reco E in 5 ZP 1 sectors - low gain chain Double 32_t f. ZP 2 Tower. Energy. LR[5]; // reco E in 5 ZP 2 sectors - low gain chain Short_t f. ZDCParticipants; // number of participants estimated by the ZDC (ONLY in A-A) Short_t f. ZDCPart. Side. A; // number of participants estimated by the ZDC (ONLY in A-A) Short_t f. ZDCPart. Side. C; // number of participants estimated by the ZDC (ONLY in A-A) ONLY IN A-A!! Double 32_t f. Impact. Parameter; // impact parameter estimated by the ZDC (ONLY in A-A) Double 32_t f. Impact. Param. Side. A; // impact parameter estimated by the ZDC (ONLY in A-A) Double 32_t f. Impact. Param. Side. C; // impact parameter estimated by the ZDC (ONLY in A-A) Double 32_t f. ZNACentr. Coord[2]; // Coordinates of the centroid over ZNC implemented only for A-A Double 32_t f. ZNCCentr. Coord[2]; // Coordinates of the centroid over ZNA UInt_t f. ESDQuality; // flags from reconstruction contains the info needed for 1 st physics analysis UInt_t f. VMEScaler[32]; // counts from VME scaler data has been moved into Ali. ESDZDC class C. Oppedisano, ALICE Offline Week, CERN 27 October 2009

Offline calibration strategy STANDALONE_PEDESTAL and STANDALONE_PULSER runs �run once per machine filling, contain 103 -104 events and are not reconstructed Æ histograms are saved as reference data Æ 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) Æ Ali. ZDCCalib. Task implemented and committed Æ 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) C. Oppedisano, ALICE Offline Week, CERN 27 October 2009

QA ZDC histos provided for non expert (experimental data case) Æ Raw data: signal the 4 hadronic calorimeters (for the 2 gain chains provided by the dual output ADC) Æ 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 Æ p-p data basic quality checks are implemented, to verify the equalization of the hadronic calorimeters: �check whether |( i PMQi) - PMC|/PMC < 15% Æ 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*|<ZNA> - <ZNC>|/(<ZNA> + <ZNC>) < 10% � 2*|<ZPA> - <ZPC>|/(<ZPA> + <ZPC>) < 20% �|( i PMQi) - PMC|/PMC < 20% 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 Æ AMORE DQM (lack of manpower) Æ visualization code in Ali. Eve C. Oppedisano, ALICE Offline Week, CERN 27 October 2009

Opened Savannah bugs Bugs that could be closed �bug #54567 crash in Pb. Pbtest 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 C. Oppedisano, ALICE Offline Week, CERN 27 October 2009

Plans for 1 st data taking Æ 1 st ZDC data into ESD ADC values, no energy calibration (at least for the beginning) Æ offline calibration in p-p STANDALONE_PEDESTAL and STANDALONE_LASER runs Æ 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 PDC 09 simulated data. C. Oppedisano, ALICE Offline Week, CERN 27 October 2009

ZDC readiness for 1 st p-p data Æ DA have been tested and are ready Æ Shuttle preprocessor works correctly Æ offline calibration procedure should be quick and straightforward Æ info needed for 1 st physics analysis is in ESD and has been tested with PDC 09 production Æ 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 C. Oppedisano, ALICE Offline Week, CERN 27 October 2009