Home > Community > Attività di ricerca > Gruppo 3 > ALICE > Ricerca > Hardware > ALICE SSD > Detector Commissioning Noise Run Analysis - Part 1 Versione stampabile General Information (11 September 2008)During this run the ZS threshold was set to 3.0σ. Some noisy SINTEF ladders OFF.RUNTrigger SequenceTrigger ModeFrequencyEvents58151L2aBC4000 Hz221458148L2aBC40 Hz201458150L2aBC400 Hz2073The reconstruction was performed with AliRoot v4-14-Release. The official OCDB files were used from AliEn. These files were produced from previous calibration runs.The analysis of the SSD clusters revealed that we have the following number of golden clusters over all the events for the two runs:RUNLayer 5Layer 658151165275558148176815815010596The OCDB files that were used for the reconstruction of these noise runs come from the run number 58141.Results from the run 58148The strip occupancy distribution improved considerably:Run 58148 (some ladders off)Run 57977 (ladders on)Frequency that a strip fired for all the modules per event\The line shows the expected level for the ZS threshold used.Number of clusters per module/number of events\Results from the run 58150Frequency that a strip fired for all the modules per event\The line shows the expected level for the ZS threshold used.Number of clusters per module/number of events\Results from the run 58151Frequency that a strip fired for all the modules per event\The line shows the expected level for the ZS threshold used.Number of clusters per module/number of events\General Information (18th September 2008)During this run the ZS threshold was set to 3.0σ. The run was taken with the updated timing settings as well as with the bad channel list created on the 17th of September (the newest version of this list).RUNTrigger SequenceTrigger ModeFrequencyEvents59951L2aBC233 Hz838859949L2aBC40 Hz8249The reconstruction was performed with AliRoot v4-15-Release. The official OCDB files were used from AliEn. These files were produced from previous calibration runs.The analysis of the SSD clusters revealed that we have the following number of golden clusters over all the events for the two runs:RUNLayer 5Layer 6599511182220599491198422The OCDB files that were used for the reconstruction of these noise runs come from the run number 59943.Results from the run 59949Number of clusters per module/number of events\Module ID\Cluster size\Results from the run 59951Number of clusters per module/number of events\Module ID\Cluster size\General Information (23rd September 2008)During this run the ZS threshold was set to 3.0σ.RUNTrigger SequenceTrigger ModeFrequencyEvents60438L2aBC233 Hz832260437L2aBC40 Hz8191The reconstruction was performed with AliRoot v4-15-Release. The official OCDB files were used from AliEn. These files were produced from previous calibration runs.The analysis of the SSD clusters revealed that we have the following number of golden clusters over all the events for the two runs:RUNLayer 5 (No 5σ cut)Layer 6 (No 5σ cut)Layer 5 (With 5σ cut)Layer 6 (With 5σ cut)604385357545941604374717140029The OCDB files that were used for the reconstruction of these noise runs come from the run number 60433.Results from the run 60437\Number of clusters per module/number of events (1st row without and 2nd with the 5σ cut)\\Module ID (1st row without and 2nd with the 5σ cut)\\Cluster size (1st row without and 2nd with the 5σ cut)\Results from the run 60438\Number of clusters per module/number of events (1st row without and 2nd with the 5σ cut)\\Module ID (1st row without and 2nd with the 5σ cut)\\Cluster size (1st row without and 2nd with the 5σ cut)\
