Difference: ApprovedPlotsTileUpgrades (7 vs. 8)

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This plot shows the time evolution of PMT response for different PMTs and PMT models at test bench. Individual PMT response is normalised to the first day of observation and to the signal of a reference PMT monitoring the light source intensity. The reference PMT, model Hamamatsu R1636, is not integrating sizable amounts of anode charge and its stability is measured to be 0.5% level. Circular points represent the PMT relative response of 7 PMTs model Hamamatsu R7877 dismounted from TileCal detector in February 2017. They were reading different cell types (A, BC, D, E) having integrated 1 to 5 C during Run 1 and first period of Run 2. Triangular points represent the PMT relative response of 4 PMTs model Hamamatsu R11187, an evolution of model Hamamatsu R7877. This model is proposed for PMT replacement for HL-LHC. New model shows a smaller down-drift as a function of the integrated anode charge.
Contacts: giulia.di.gregorio@cern.ch, sandra.leone@pi.infn.it, and fabrizio.scuri@pi.infn.it
Reference: https://cds.cern.ch/record/2317070?ln=it
Date: May, 2018
PMT_deviations_VS_integrated_charge_Preliminary.png
[eps]
This plot shows the time evolution of average PMT relative response for different PMT models: test bench results. Individual PMT response is normalised to the first day of observation and to the signal of a reference PMT monitoring the light source intensity. The reference PMT, model Hamamatsu R1636, is not integrating sizable amounts of anode charge and its stability is measured to be 0.5% level. Blu circular points represent the average response of 7 PMTs model Hamamatsu R7877 dismounted from TileCal detector in February 2017. They were reading different cell type (A, BC, D, E) having integrated 1 to 5 C during Run 1 and the first period of Run 2. Red triangular points represent the average response of 4 PMTs model Hamamatsu R11187, an evolution of model Hamamatsu R7877. This model is proposed for PMT replacement for HL-LHC. The average PMT relative response is fitted with a double exponential distinguishing the PMT model.
Contacts: giulia.di.gregorio@cern.ch, sandra.leone@pi.infn.it, and fabrizio.scuri@pi.infn.it
Reference: https://cds.cern.ch/record/2317070?ln=it
Date: May, 2018
Average_PMT_deviation_VS_integrated_charge_Preliminary.png
[eps]
  Single and Multi-anode PMT response time profiles of the Cs-source scan in the Cell B11.
The green curve corresponds to the response of the single-anode PMT to the passage of the Cs-source in 16 tile rows. Superimposed to the single-anode PMT response are the time profile signals of the individual multi-anode PMT pixels (8x8 grid) showing the maximum amplitude at the time of each maximum of the single-anode PMT profile. In pixels (2,8) , (4,3), (7,1), there are two different positions of the source, where the same pixel has a maximum response value.
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  • Time evolution of PMT response for different PMTs and PMT models at test bench:
    PMT_deviations_VS_integrated_charge_Preliminary.png
 
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META FILEATTACHMENT attachment="A12_MAPMT_Cs.eps" attr="" comment="Single and Multi-anode PMT response time profiles of the Cs-source scan in the Cell A12" date="1498635103" name="A12_MAPMT_Cs.eps" path="A12_MAPMT_Cs.eps" size="37430" user="tmkrtchy" version="1"
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META FILEATTACHMENT attachment="PMT_deviations_VS_integrated_charge_Preliminary.eps" attr="" comment="Time evolution of PMT response for different PMTs and PMT models at test bench" date="1526389532" name="PMT_deviations_VS_integrated_charge_Preliminary.eps" path="PMT_deviations_VS_integrated_charge_Preliminary.eps" size="21487" user="gdigrego" version="1"
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META FILEATTACHMENT attachment="Average_PMT_deviation_VS_integrated_charge_Preliminary.eps" attr="" comment="Time evolution of average PMT relative response for different PMT models: test bench results" date="1526389764" name="Average_PMT_deviation_VS_integrated_charge_Preliminary.eps" path="Average_PMT_deviation_VS_integrated_charge_Preliminary.eps" size="21712" user="gdigrego" version="1"
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