First look into reconstructed data of test beam at DESY in Feb 2018
The following runs were used: 5370-5379
The setup consists of 4 modules (13,14,15,16) with an absorber in front. The detector was running with the BIF for time reference.
The following plots are without any event selection or cuts - just plain reconstructed events. For reconstruction the default calibration constants in the database were used and a simple time calibration was performed.
The reconstructed root file can be downloaded here: https://nextcloud.mpp.mpg.de/nextcloud/index.php/s/QSO0GqHT4c2erqw
Number of hits per event: nHits.pdf
Hit distribution I coordinate: hitI.pdf
Hit distribution J coordinate: hitJ.pdf
Hit distribution K coordinate: hitK.pdf
Memory cell occupancy: memoryCell_occupancy.pdf Memory Cell is defined as hitType - 100, so you have to substract 100 from the xAxis to get the memoryCell number.
Hit Map (logarithmic Z scale): Run_5370_hitmap.pdf
Energy calibrated using gain, pedestal and mip constants from Yuji.
Hit energy: Run_5370_hitEnergy.pdf
Hit energu with landau fit: Run_5370_hitEnergy_landauFit.pdf
Hit energy high gain (red), low gain (green), both (blue) Run_5370_hitEnergyBothGain.pdf
Hit energy high gain (red), low gain (green), both (blue) for each module: Run_5370_hitEnergy_perModule.pdf
Hit energy high gain: Run_5370_hitEnergyHighGain.pdf
Hit energy low gain: Run_5370_hitEnergyLowGain.pdf
Energy Sum: Run_5370_energySum.pdf
Energy Distribution with varying distance to center of the shower (pos i=12, j=12 is the center of the detector):
pos 12, 12: hitEnergy_13_12_12.pdf
pos 12, 10: hitEnergy_13_12_10.pdf
pos 12, 8: hitEnergy_13_12_08.pdf
pos 12, 2: hitEnergy_13_12_02.pdf
Energy distribution for different memory cells in the same channel in log and normal scale.
Together in one plot: hitEnergyMemoryCellsComparison.pdf
Conclusion: Memory cell 3 does not show a different behaviour
Hit energy distribution for 4 different channels in all layers (12,12; 12,13; 13,12; 13,13) for each memory cell Run_5370_hitEnergy_perMemCell.pdf
Same channels as above but summed over all memory cells but the first one (as the first one never goes into low gain mode): Run_5370_hitEnergy_perChannel.pdf
Data after a simple time calibration (only slope and offset, no timewalk/non-linearity). The slopes seem to be a bit more flat than before: plus/minus 1-1.4ns/tdc.
Time distribution complete range: timeResolution_all.pdf
- There are several spikes separated by ~1000ns.
Zoom in around 0: timeResolution.pdf
- Second peak around 25ns visible and a shoulder around -25ns.
- The second peak at 25ns seems to be at every module and not correlated with energy
Correlation of hit time with bxID: hitTime_over_BXID.pdf
- Hit time is stable over BXIDs but at the beginning there seems to be a shift of the time distribution
Correlation of hit time over BIF Time: hitTime_vs_bifTime.pdf
After recalibration with more hits
Time distribution (falling ramps red, rising ramps blue): Run_5370_timing_bxID.pdf
Time distribution zoom (falling ramps red, rising ramps blue): Run_5370_timing_bxID_zoom.pdf
BIF01: Distribution of BIF Time: bifTime.pdf
BIF02: Distribution of BxIDs: bxID.pdf
BIF04: Acquisation length vs BxID: bxID_vs_acqLength.pdf
BIF05: Acquisation length divided by BxID: acLength_per_BxID.pdf
BIF06: Time distribution vs acquisation length: time_vs_acqLength.pdf
BIF07: Time distribution vs acquisation length divided by BxID: time_vs_acqLength_per_BxID.pdf
BIF08: Same as above with zoom: time_vs_acqLength_per_BxID_zoom.pdf
BIF09: Time distribution vs (acquisition length / 5120) % 2: time_vs_acqLength_modulo2.pdf
BIF10: Time distribution for (acquisition length / 5120) % 2 == 0: time_acqLengthModulo2_0.pdf
BIF11: Time distribution for (acquisition length / 5120) % 2 == 1: timeDistribution_acqLengthModulo2_1.pdf