scan status overview
DESCRIPTION
Scan Status Overview. ToT problem understood and fixed Vcal needs to be set at scan initialization Was always set to zero in STcontrol No loop over charge in STcontrol implemented electrons-to-DAC functions for comparison with TurbDAQ Most scans yield reasonable results in STcontrol now - PowerPoint PPT PresentationTRANSCRIPT
Scan Status Overview
Scan Status 06/12/10 M. WittgenPage 1
• ToT problem understood and fixed
• Vcal needs to be set at scan initialization
• Was always set to zero in STcontrol
• No loop over charge in STcontrol
• implemented electrons-to-DAC functions for comparison with TurbDAQ
• Most scans yield reasonable results in STcontrol now
• STcontrol can now configure the channel to module input is connected to from configuration file
Timewalk Scans
Scan Status 06/12/10 M. WittgenPage 2
• Basic configuration
• One level 1 trigger
• Loop over strobe delay 0-63 on RCE and
• Vcal 70 -1000 on host (steered by STcontrol)
• VCAL is 10 bit value (0-1023)
• Misrepresented as char/octet in PixelModuleConfig.idl
• fixed to unsigned long (32bit)
STcontrol Status Non-BOC-Scans
Scan Status 06/10/10 M. WittgenPage 3
SCAN HISTO TYPE Runs/Results COMMENTANALOG_TEST OCCUPANCY YES/YES ToT fixed now
DIGITAL_TEST OCCUPANCY YES/YES Works
CROSSTALK_SCAN THRESHOLD YES/NO Needs more debugging. No hits
TOT_CALIB TOT YES/YES Works. See plots
THRESHOLD_SCAN THRESHOLD YES/YES Works.
TIMEWALK_MEASURE OCCUPANCY YES/NO
TDAC_TUNE THRESHOLD YES/(YES) Works in principle. See plot. Some problems with half the FECs
T0_SCAN OCCUPANCY YES/NO No hits.
INTIME_THRESHOLD_SCAN THRESHOLD YES/NO No hits.
INCREMENTAL_TDAC_SCAN THRESHOLD NO/NO STcontrol error
IF_TUNE TOT YES/YES
GDAC_TUNE THRESHOLD YES/YES Works. See plots.
FDAC_TUNE TOT YES/YES Works. See plots
Scan Setup
Scan Status 06/12/10 M. WittgenPage 4
• Tested with module M511958 with HV connected
• one FEC broken
• threshold tuned to 3200 electrons with TurboDAQ
• ToT tuned to 30 cycles at 20000 electrons
• Framework with STcontrol now in place
• probably still some more bug
• would be good to check the result with the scan experts
CORBA Problems
Scan Status 06/12/10 M. WittgenPage 5
• Histograms are published to histogram server
• takes several minutes if all histograms are sent
• rate in the order of ten per second
• 101 bins x (3x ToT + 3 BCID + OCC) = 707 histograms
• Alternative (faster) method: download from RCE
• CORBA crashes (timeout?) when more then a certain amount (bins>50) of histograms present
• For now workaround in STcontrol
• download one-bye-one
• reasonably fast
TurboDAQ/STcontrol GDAC Tune
Scan Status 06/12/10 M. WittgenPage 6
TurboDAQ/STcontrol FDAC Tune
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GDAC FDAC Tune
Scan Status 06/12/10 M. WittgenPage 8
IF Tune
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Analog Scan ToT=30 @ 2000 e-
Scan Status 06/12/10 M. WittgenPage 10
ToT vs charge calibration
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