Difference: LArCaloPublicResultsUpgrade (20 vs. 21)

Revision 212018-03-05 - SteffenStaerz

Line: 1 to 1
 
META TOPICPARENT name="ApprovedPlotsLAr"
AtlasPublicTopicHeader.png
Line: 24 to 24
  Two LAr Phase I trigger upgrade demonstrator boards (2 Demonstrator LTDBs, LAr Trigger Digitizer Boards) were installed in-situ on the LAr detector in July 2014 (coverage: 9π/16 < φ < 11π/16, 0 < η < 1.4). To receive the digital super-cell energies ABBA boards (LDPB pre-prototype) were installed in USA15. One ABBA board receives data from one LTDB 320 super cells. Super-cell data has been recorded for a large number of time slices with this pre-prototype backend electronics.
Added:
>
>

Data from 2017 runs: pulse shapes and timing distributions

General Information
  • The plots show data from pp collisions, physics run 334487, recorded on August 30, 2017.
  • Events were triggered by dedicated triggers requiring either a Level 1 electromagnetic cluster (EM) with ET > 20 GeV or a Level 1 Jet with ET > 100 GeV within the demonstrator acceptance (for EM(Jet) 1.6 < φ < 2.2(2.3), 0 < η < 1.5). Those triggers were prescaled to have a combined event rate of approximately 1 Hz.
  • Events from the LAr demonstrator are matched to events collected in the main read-out using their bunch-crossing ID and brunch-crossing time. An alternative method is the matching according to the L1 ID of the events.
Description of procedure
  • Measured pulse shapes for each layer and comparison with prediction:
    • Measured pulse shapes are obtained from raw data of the demonstrator system and normalised according to measured energy in main read-out (to obtain a pulse height in ADC/GeV). Different options for averaging several events are applied.
    • The Response Transformation Method is used to predict the pulse shape from calibration data. The normalisation is solely based on the dedicated demonstrator calibration coefficients and thus independent of the normalisation for the measured pulse shapes.
  • Pulse timing distributions for each layer are based on the reconstruction of the demonstrator pulses with OFCs.
  • Out of all events with |Edem − Emain |/Emain < 0.5 and Emain > 2 GeV, only the 20% highest energy deposits are used.
    • cuts were checked to create no bias on pulse shape or timing
    • cuts applied:
      • Presampler: 4.70 GeV (178 events)
      • Front layer: 7.80 GeV (133 events)
      • Middle layer: 11.05 GeV (282 events)
      • Back layer: 5.55 GeV (107 events)

Comparison of extracted pulse shapes for front layer: Measured pulse shapes (red) of a front layer supercell in the LAr Phase I demonstrator are compared to the, independently obtained, predicted pulse shape (black). The supercells in the presampler, front, middle and back layer consist of 4, 8, 4 and 8 LAr cells, respectively. Very good agreement between the different averaging methods is obtained. Only the five measurements around the peak (dashed line) are used for the energy and timing reconstruction. The shape difference at ≅ 1000 ns is expected to originate from the modeling of the electrode position in the LAr gap.

File 'extractionMethods_front_average' not found!
eps version, pdf version
File 'extractionMethods_front_hist' not found!
eps version, pdf version
File 'extractionMethods_front_maxE' not found!
eps version, pdf version

Measured pulse shapes for each layer: Measured pulse shapes (red) of supercells in the LAr Phase I demonstrator are compared to the, independently obtained, predicted pulse shapes (black). The supercells in the presampler, front, middle and back layer consist of 4, 8, 4 and 8 LAr cells, respectively. Good agreement is observed between measurement and prediction, while remaining small normalisation offsets are due to the preliminary calibration of the supercells. Only the five measurements around the peak (dashed line) are used for the energy and timing reconstruction. The shape difference at ≅ 1000 ns is expected to originate from the modelling of the electrode position in the LAr gap.

File 'pulseShape_presampler' not found!
eps version, pdf version
File 'pulseShape_front' not found!
eps version, pdf version
File 'pulseShape_middle' not found!
eps version, pdf version
File 'pulseShape_back' not found!
eps version, pdf version

Pulse timing distributions for each layer: The measured supercell timing distribution of the LAr Phase I demonstrator is given for selected supercells. The identification of the bunch-crossing ID is possible due to the low deviation of the mean from 0 ns and a RMS value much smaller than 25 ns. The supercells in the presampler, front, middle and back layer consist of 4, 8, 4 and 8 LAr cells, respectively. The average supercell energy of the used events is 6.7 GeV in the presampler, 13.3 GeV in the front layer, 24.2 GeV in the middle layer and 8.9 GeV in the back layer. The small shift of the means is due to the preliminary calibration of the supercells.

File 'pulseTiming_presampler' not found!
eps version, pdf version
File 'pulseTiming_front' not found!
eps version, pdf version
File 'pulseTiming_middle' not found!
eps version, pdf version
File 'pulseTiming_back' not found!
eps version, pdf version

 

Data from 2017 runs and event displays

  • The plots show data from pp collisions, physics run 328099, recorded between June 27 and June 28, 2017.
  • Events were triggered by dedicated triggers requiring either a Level 1 electromagnetic cluster (EM) with ET > 20 GeV or a Level 1 Jet with ET > 100 GeV within the demonstrator acceptance (for EM(Jet) 1.6 < φ < 2.2(2.3), 0 < η < 1.5). Those triggers were prescaled to have a combined event rate of approximately 1 Hz.
Line: 854 to 935
 
META FILEATTACHMENT attachment="intr_electr_res_ml_prel.eps" attr="" comment="Quantization noise" date="1505392276" name="intr_electr_res_ml_prel.eps" path="intr_electr_res_ml_prel.eps" size="20926" user="staerz" version="1"
META FILEATTACHMENT attachment="intr_electr_res_ml_prel.pdf" attr="" comment="Quantization noise" date="1505392276" name="intr_electr_res_ml_prel.pdf" path="intr_electr_res_ml_prel.pdf" size="25564" user="staerz" version="1"
META FILEATTACHMENT attachment="intr_electr_res_ml_prel.png" attr="" comment="Quantization noise" date="1505392276" name="intr_electr_res_ml_prel.png" path="intr_electr_res_ml_prel.png" size="46234" user="staerz" version="1"
Added:
>
>
META FILEATTACHMENT attachment="extractionMethods_front_average.eps" attr="" comment="Demonstrator pulse shape extraction methods" date="1520256268" name="extractionMethods_front_average.eps" path="extractionMethods_front_average.eps" size="69786" user="staerz" version="1"
META FILEATTACHMENT attachment="extractionMethods_front_average.pdf" attr="" comment="Demonstrator pulse shape extraction methods" date="1520256268" name="extractionMethods_front_average.pdf" path="extractionMethods_front_average.pdf" size="26459" user="staerz" version="1"
META FILEATTACHMENT attachment="extractionMethods_front_average.png" attr="" comment="Demonstrator pulse shape extraction methods" date="1520256268" name="extractionMethods_front_average.png" path="extractionMethods_front_average.png" size="58978" user="staerz" version="1"
META FILEATTACHMENT attachment="extractionMethods_front_hist.eps" attr="" comment="Demonstrator pulse shape extraction methods" date="1520256268" name="extractionMethods_front_hist.eps" path="extractionMethods_front_hist.eps" size="70538" user="staerz" version="1"
META FILEATTACHMENT attachment="extractionMethods_front_hist.pdf" attr="" comment="Demonstrator pulse shape extraction methods" date="1520256268" name="extractionMethods_front_hist.pdf" path="extractionMethods_front_hist.pdf" size="26536" user="staerz" version="1"
META FILEATTACHMENT attachment="extractionMethods_front_hist.png" attr="" comment="Demonstrator pulse shape extraction methods" date="1520256268" name="extractionMethods_front_hist.png" path="extractionMethods_front_hist.png" size="59130" user="staerz" version="1"
META FILEATTACHMENT attachment="extractionMethods_front_maxE.eps" attr="" comment="Demonstrator pulse shape extraction methods" date="1520256268" name="extractionMethods_front_maxE.eps" path="extractionMethods_front_maxE.eps" size="70048" user="staerz" version="1"
META FILEATTACHMENT attachment="extractionMethods_front_maxE.pdf" attr="" comment="Demonstrator pulse shape extraction methods" date="1520256268" name="extractionMethods_front_maxE.pdf" path="extractionMethods_front_maxE.pdf" size="26078" user="staerz" version="1"
META FILEATTACHMENT attachment="extractionMethods_front_maxE.png" attr="" comment="Demonstrator pulse shape extraction methods" date="1520256268" name="extractionMethods_front_maxE.png" path="extractionMethods_front_maxE.png" size="60043" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseShape_back.eps" attr="" comment="Demonstrator pulse shapes" date="1520256353" name="pulseShape_back.eps" path="pulseShape_back.eps" size="71017" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseShape_back.pdf" attr="" comment="Demonstrator pulse shapes" date="1520256353" name="pulseShape_back.pdf" path="pulseShape_back.pdf" size="26579" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseShape_back.png" attr="" comment="Demonstrator pulse shapes" date="1520256353" name="pulseShape_back.png" path="pulseShape_back.png" size="61063" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseShape_front.pdf" attr="" comment="Demonstrator pulse shapes" date="1520256353" name="pulseShape_front.pdf" path="pulseShape_front.pdf" size="26536" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseShape_front.png" attr="" comment="Demonstrator pulse shapes" date="1520256353" name="pulseShape_front.png" path="pulseShape_front.png" size="59130" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseShape_front.eps" attr="" comment="Demonstrator pulse shapes" date="1520256468" name="pulseShape_front.eps" path="pulseShape_front.eps" size="70538" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseShape_middle.eps" attr="" comment="Demonstrator pulse shapes" date="1520256468" name="pulseShape_middle.eps" path="pulseShape_middle.eps" size="70574" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseShape_middle.pdf" attr="" comment="Demonstrator pulse shapes" date="1520256468" name="pulseShape_middle.pdf" path="pulseShape_middle.pdf" size="26516" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseShape_middle.png" attr="" comment="Demonstrator pulse shapes" date="1520256468" name="pulseShape_middle.png" path="pulseShape_middle.png" size="59566" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseShape_presampler.eps" attr="" comment="Demonstrator pulse shapes" date="1520256468" name="pulseShape_presampler.eps" path="pulseShape_presampler.eps" size="70982" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseShape_presampler.pdf" attr="" comment="Demonstrator pulse shapes" date="1520256468" name="pulseShape_presampler.pdf" path="pulseShape_presampler.pdf" size="26744" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseShape_presampler.png" attr="" comment="Demonstrator pulse shapes" date="1520256468" name="pulseShape_presampler.png" path="pulseShape_presampler.png" size="61979" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseTiming_back.eps" attr="" comment="Demonstrator timing distribution" date="1520256563" name="pulseTiming_back.eps" path="pulseTiming_back.eps" size="32286" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseTiming_back.pdf" attr="" comment="Demonstrator timing distribution" date="1520256563" name="pulseTiming_back.pdf" path="pulseTiming_back.pdf" size="13847" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseTiming_back.png" attr="" comment="Demonstrator timing distribution" date="1520256563" name="pulseTiming_back.png" path="pulseTiming_back.png" size="37558" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseTiming_front.eps" attr="" comment="Demonstrator timing distribution" date="1520256563" name="pulseTiming_front.eps" path="pulseTiming_front.eps" size="31213" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseTiming_front.pdf" attr="" comment="Demonstrator timing distribution" date="1520256563" name="pulseTiming_front.pdf" path="pulseTiming_front.pdf" size="13776" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseTiming_front.png" attr="" comment="Demonstrator timing distribution" date="1520256563" name="pulseTiming_front.png" path="pulseTiming_front.png" size="35462" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseTiming_middle.eps" attr="" comment="Demonstrator timing distribution" date="1520256593" name="pulseTiming_middle.eps" path="pulseTiming_middle.eps" size="31845" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseTiming_middle.pdf" attr="" comment="Demonstrator timing distribution" date="1520256593" name="pulseTiming_middle.pdf" path="pulseTiming_middle.pdf" size="13749" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseTiming_middle.png" attr="" comment="Demonstrator timing distribution" date="1520256593" name="pulseTiming_middle.png" path="pulseTiming_middle.png" size="35080" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseTiming_presampler.eps" attr="" comment="Demonstrator timing distribution" date="1520256593" name="pulseTiming_presampler.eps" path="pulseTiming_presampler.eps" size="31997" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseTiming_presampler.pdf" attr="" comment="Demonstrator timing distribution" date="1520256593" name="pulseTiming_presampler.pdf" path="pulseTiming_presampler.pdf" size="13822" user="staerz" version="1"
META FILEATTACHMENT attachment="pulseTiming_presampler.png" attr="" comment="Demonstrator timing distribution" date="1520256593" name="pulseTiming_presampler.png" path="pulseTiming_presampler.png" size="36773" user="staerz" version="1"
 
This site is powered by the TWiki collaboration platform Powered by PerlCopyright & 2008-2019 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback