Analysis on the Run XIV SSD data can be found in these pages.
News for this run
March 11, 2014
SSD RDO ID1 (the ID appears in the data header) got replaced with a
different RDO with ID6
The new RDO ID6 has the same Ladder Card mapping as RDO ID1 had.
ALL runs after 3PM EDT will show the ID for the first RDO as 6.
Thorsten Stezelberger, Luis Ardila
Only run 15055095 does not show bad events (events for which the mean ADC is around 1000). All the other shows some bad events.
Looking at the run log, the only differences are :
run 15055095 :
DaqRunType : PedAsPhys
Clock Source : Rhic Clock
Trigger : pedAsPhys
Clock Frequency : 9.307 MHz
number of events in the DAQ file : 1k
and all the other runs are :
DaqRunType : PedAsPhys_tcd_only
Clock Source : Local Clock
Trigger : pedAsPhys
Clock Frequency : 9.4 MHz
number of events in the DAQ file : 2k
I looked at one of the pedestal run : run 15055099.
The pedestal and rms values are now computing by Tonko's code in StRoot/RTS/src/DAQ_SST/sstPed.cxx and decoded in StSstDaqMaker by accessing the sst/pedrms bank.
The plots are there : run 15055099 : each page has the pedestal values on top (left=sideP, right=sideN) and rms (left=sideP, right=sideN)
Some ped values are still negative (due to the wrap around 1024)
rms values are much higher than previous run (~ 40-50 ADC)
List of pedestal run
This page lists the pedestal run and gives plots of <pedestal> and <rms> per chip for P and N side ladders.
Pedestals & Noises
A first look at the pedestal and noise is shown below.
Document to explain the procedure calculation (Jim Thomas) : here .
First test to apply the procedure calculation (Long Zhou) : here .
I made the plots ADC vs. rdo channels (without the signal wrapped-around) for all the wafers. The idea was to identify chips for which all their channels saturating at ~1000 ADC ( example ). It is a different behavior than the signal wraped-around 1024 ADC.
The list of chips (per side, ladder,wafer) is here : table
(if no chip # is specified, it means that all chips for that wafer saturate)
The details per ladder can be found in this directory :
example for ladder 1, sideN
(please change ladder from 1 to 20 in your browser search window, N to P to see all the other pdf files)
I looked at the offline reconstruction for a cosmic run. The goal is to test it with the new DAQ maker. Also it's a cosmic run where almost all signal is some pedestal value, so don't expect meaningful quantities. run st_cosmic_15025008_raw_2000001.daq .