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itk:testbeam [2016/09/30 17:27]
asc 		itk:testbeam [2016/10/04 15:11] (current)
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-======  Pixel module test beam ====== +======  Pixel module test beam at SLAC ====== 
-(prepared by S.Chekanov)+(some notes by S.Chekanov)
  
  
 Here are the useful links on test beam in Sep. 2016 at SLAC. The plan is discuses  [[https://twiki.cern.ch/twiki/bin/viewauth/Atlas/ITkPixelTestBeamSLACSep2016|on this wiki at SLAC]]. Here are the useful links on test beam in Sep. 2016 at SLAC. The plan is discuses  [[https://twiki.cern.ch/twiki/bin/viewauth/Atlas/ITkPixelTestBeamSLACSep2016|on this wiki at SLAC]].
  
-What is used: 11 GeV secondary electrons (~100 - 200 per bunch), 5 HZ frequency. Original electron beam is 14 GeV.+What is used: 11 GeV secondary electrons (~10-100  per bunch), 5 HZ frequency. 
 +The beam sport is about 1x1 cm (tunable). 
 + Original electron beam is 14 GeV.
 The setup is described in [[https://confluence.slac.stanford.edu/display/Atlas/TestBeam| Setup at SLAC]]. The setup is described in [[https://confluence.slac.stanford.edu/display/Atlas/TestBeam| Setup at SLAC]].
 To start the run, use: To start the run, use:
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 Details on 2 tests: Details on 2 tests:
  
-1) Testing RTI (USA vendor) to test bum bonding.  We use  2 V for low voltage and max 0.5 A. We set -80 V as bias voltage for RTI (FE-I4B) board.+1) Testing RTI (USA vendor) to test bump bonding.  We use  2 V for low voltage and max 0.5 A. We set -80 V as bias voltage for RTI (FE-I4B) board.
  
  
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 Here is the setup at the end-station A: Here is the setup at the end-station A:
 +
 +This is the  RTI module (uncovered):
  
 {{:itk:img_20160928_103349.jpg?400|Setup}} {{:itk:img_20160928_103349.jpg?400|Setup}}
 +
 +This is the  RTI module + RD53 prototype (uncovered):
  
 {{:itk:img_20160928_100735.jpg?400|Setup}} {{:itk:img_20160928_100735.jpg?400|Setup}}
 +
 +Telescope:
  
 {{:itk:img_20160927_142154.jpg?400|Telescope}} {{:itk:img_20160927_142154.jpg?400|Telescope}}
 +
 +Control room upstairs:
  
 {{:itk:img_20160930_071901.jpg?400|Control room}} {{:itk:img_20160930_071901.jpg?400|Control room}}
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-Both modules from RTI have  shown signs of degradation performance. After about ~6-8h, we start to see problems for the analog  +Both modules from RTI have  shown signs of degradation in performance. After about ~6-8h, we start to see problems for the analog readout. The occupancy for analog channel efficiency for  uncalibrated module goes from 99% to 70% after 6h. The noise increases by a factor 2.   
-channels. The occupancy for uncalibrated module goes from 99% to 70% after 6h. The noise increases by a factor 2.  + 
 +This problem is not related to the active beam, since the red module was not under the beam on Sep 28. 
  
-This problem is not related to the active beam, since the red module was not under the beam in Sep 28.  
  
  
itk/testbeam.1475256423.txt.gz · Last modified: 2016/09/30 17:27 by asc

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