Difference between revisions of "Compton DAQ Dev"
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Here is a picture https://hallaweb.jlab.org/wiki/index.php/File:Polarimeter_daq_xfig.pdf | Here is a picture https://hallaweb.jlab.org/wiki/index.php/File:Polarimeter_daq_xfig.pdf | ||
Revision as of 12:22, 12 October 2022
Project to Develop a DAQ for the Compton
See earlier work https://hallaweb.jlab.org/wiki/index.php/Compton_Counting_DAQ_Software_HOWTO
Basic Setup
updated R. Michaels Oct 12, 2022
Here is a picture https://hallaweb.jlab.org/wiki/index.php/File:Polarimeter_daq_xfig.pdf
The basic configuration of the DAQ
DAQ config: https://hallaweb.jlab.org/wiki/index.php/File:HaVTP_config.png
ROC1 : https://hallaweb.jlab.org/wiki/index.php/File:Roc1_config.png
VTP : https://hallaweb.jlab.org/wiki/index.php/File:VtpROC_config.png
Budget and Plan
Upgrade of Compton and moller polarimeter DAQ in halls A and C.
The 4 systems are approximately the same. The FADC will be modified
to support both counting mode and integrating mode.
Item Price each Qty Line cost
VXS crate 16.5 k 4 66 k
VTP 10 k 4 40 k
cpu (ATOM) 3 k 4 12 k
SD 2 k 4 8 k
scaler 4 k 4 16 k
VETROC 2 k 8 16 k
TI 2 k 4 8 k
I/O 1.5 k 4 6 k
Spares 43 k
==========================================
TOTAL 215 k$
This plan was approved in Aug 2022. It's essentially 43k$ per
DAQ (times 5 since we need spares). We'll buy the first system
for the hall C moller in FY2023. This 43k$ is in the FY2023 budget.
After that we may need to refine the design. Then in FY2024 we'll
purchase/build 3 more DAQs. Finally, buy spares in FY2025.
How to Run
updated Oct 12, 2022. R. Michaels How to login to the two ROCs and start the ROC ssh -X amoll1 -l sbs-onl ./startroc1 ssh -X havtp1 -l sbs-onl ./startRoc How to start CODA on atedf3. Username adaq. kcoda startcoda VTP readout havtp1:/home/sbs-onl/comptonDaq/vtp/rol/vtp_list.so ROC1 readout amoll1:/home/sbs-onl/comptonDaq/rol/vtpCompton_list.so Oct 12, 2022. Currently using a 50 Hz front-panel pulser trigger on TI. Later want to modify this to use a trigger from VTP based on data from FADC and/or the VETROC. If I drop the VTP from the readout and remove tiRocEnable(2) from amoll1:/home/sbs-onl/comptonDaq/rol/vtpCompton_list.c then the DAQ runs fine and both the FADC and VETROC data make sense. Next I added the VTP. Still a FP trigger. It downloads and prestarts. But here is where the problems start.
Current Problems
Oct 12, 2022. R. Michaels Problematic symptoms: I don't get any events. Actually I get a burst of events on ROC1 but the VTP seems to be stuck. VTP complains a lot: VTP_output.txt Some notable errors vtpInit: VTP_FW_Version=0x10004, VTP_FW_Type=19 vtpInit: ERROR - unknown firmware type 19. Unable to setup VTP PLL. vtpSerdesCheckLinks: ERROR - all serdes links not up! daLogMsg: ERROR: VTP Serdes links not up (I set it up to temporarily ignore that and try to get events) vtpSetCompton_EnableScalerReadout: ERROR: VTP wrong firmware type (15 when the run ends, the VTP segfaults ./startRoc: line 4: 1755 Segmentation fault coda_roc -i -s $SESSION -n vtpROC -t ROC ---------------------------------------------------------------------------------
Detailed printout from VTP https://hallaweb.jlab.org/wiki/index.php/File:VTP_output.txt
