Results from the run 82762

1. General Information

RUN 82762 Sort
Events 128709
Detectors SPD - SDD - SSD - TPC - TRD - TOF - HMPID - ACORDE - V0 - ZDC
SSD DDLs 16
SSD LDCs 8
Duration 00:33:35

The overall information for this run can be found here.

The run was take with the magnetic field ON having a value of B = 0.5 T. The trigger detectors were the SPD, the TOF and the ACORDE. The rate was dominated by the one set by the TOF trigger and this resulted into not many tracks reaching the SSD (see below).

2. OCDB files

The OCDB files that were used for the reconstruction of this run were produced by the SSD DA during the pedestal run with the number 82744. The plots below show the map of the bad channels:

Run82744-BadChannels.gif

3. Analysis of clusters

Here are some histograms obtained with the official offline QA for the SSD clusters. In all plots we see the accumulated statistics from all the events of this run. There was a selection on the golden clusters.

Cluster map
Run82762-ClusterMap.gif

Number of clusters per event per layer
Run82762-ClusterPerEvent.gif

Module number with clusters
Run82762-ModuleId.gif

Local coordinates x-y-z
Run82762-LocalCoordinates.gif

Global coordinates x-y-z
Run82762-GlobalCoordinates.gif

Cluster type - Charge ratio - Cluster charge
Run82762-ClusterCharge-1.gif

Cluster charge (P-Side) - Cluster charge (N-Side) - qN/qP
Run82762-ClusterCharge-2.gif

Cluster charge map - Cluster charge correlation
Run82762-ClusterCharge-2D.gif

4. ESD analysis

The plot below shows for each triggered class if we had a track with an associated cluster on each one of the ITS layers or not. It is read as follow:

  • 0.14% of the events were triggered by the SPD and there was no track with an SSD layer 5 assigned cluster
  • 0.25% of the events were triggered by the SPD and there was at least one track with an SSD layer 5 assigned cluster
  • 88.8% of the events were triggered by the TOF (back-to-back \pm 3) and there was no track with an SSD layer 5 assigned cluster
  • 0.05% of the events were triggered by the TOF (back-to-back \pm 3) and there was at least one track with an SSD layer 5 assigned cluster
  • 9.6% of the events were triggered by the TOF (back-to-back) and there was no track with an SSD layer 5 assigned cluster
  • 0.004% of the events were triggered by the TOF (back-to-back) and there was at least one track with an SSD layer 5 assigned cluster

  • 0.14% of the events were triggered by the SPD and there was no track with an SSD layer 6 assigned cluster
  • 0.23% of the events were triggered by the SPD and there was at least one track with an SSD layer 6 assigned cluster
  • 88.8% of the events were triggered by the TOF (back-to-back \pm 3) and there was no track with an SSD layer 6 assigned cluster
  • 0.04% of the events were triggered by the TOF (back-to-back \pm 3) and there was at least one track with an SSD layer 6 assigned cluster
  • 9.6% of the events were triggered by the TOF (back-to-back) and there was no track with an SSD layer 6 assigned cluster

TriggerEfficiency.gif

The plot below shows the energy loss from the ITS layer vs the momentum of the reconstructed track.

dEdxP.gif

-- PanosChristakoglou - 2009-09-06

Topic attachments
I Attachment History Action Size Date Who Comment
GIFgif Run82744-BadChannels.gif r1 manage 57.3 K 2009-09-06 - 00:30 PanosChristakoglou  
GIFgif Run82762-ClusterCharge-1.gif r1 manage 15.0 K 2009-09-06 - 00:30 PanosChristakoglou  
GIFgif Run82762-ClusterCharge-2.gif r1 manage 16.6 K 2009-09-06 - 00:30 PanosChristakoglou  
GIFgif Run82762-ClusterCharge-2D.gif r1 manage 20.1 K 2009-09-06 - 00:31 PanosChristakoglou  
GIFgif Run82762-ClusterMap.gif r1 manage 15.7 K 2009-09-06 - 00:31 PanosChristakoglou  
GIFgif Run82762-ClusterPerEvent.gif r1 manage 5.0 K 2009-09-06 - 00:31 PanosChristakoglou  
GIFgif Run82762-GlobalCoordinates.gif r1 manage 19.8 K 2009-09-06 - 00:31 PanosChristakoglou  
GIFgif Run82762-LocalCoordinates.gif r1 manage 17.0 K 2009-09-06 - 00:31 PanosChristakoglou  
GIFgif Run82762-ModuleId.gif r1 manage 8.0 K 2009-09-06 - 00:32 PanosChristakoglou  
GIFgif TriggerEfficiency.gif r1 manage 29.8 K 2009-09-06 - 00:32 PanosChristakoglou  
GIFgif dEdxP.gif r2 r1 manage 6.6 K 2009-09-07 - 12:08 PanosChristakoglou  
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Topic revision: r2 - 2009-09-07 - PanosChristakoglou
 
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