Those are the instructions for test beams in May 2018 to operate iRPC chambers with Petiroc electronics.
M. Gouzevitch: 161454
K. Shchablo: +33769643416
The general program for the week is on the elog http://cmsonline.cern.ch/cms-elog/1038699
The DAQ operations are integrated in GIF++ WEBDCS. We use the http://webdcs904.cern.ch/
Here you can set-up HV scans (current, noise, efficiency). Each scan would have a scan number on WEBDCS and each HV point would have a run number associated to it. In Settings –> DCS Settings. Be sure you choose Lyon DAQ. Also depending on the needs you may use RPC Mode: Double gap or Single gap.
Notice that here you would also set up the number of HV points.
Then go to HVscan –> Start DAQ HV scan
Set up minimal measure time. It is the time for each HV point. It would be defined by the number of triggers expected with the current conditions. To obtain it you can do a short measurement with an HV point and look on how many triggers you collect in few mn.
To see it go to Monitor 6 on your left and type
then look on how many triggers you collect in 1 spill.
Keep waiting time at 5 mn.
Max Triggers have no impact on DAQ just have to be above 10.
Below an example:
Before you start the run you need to do some book keeping at the end of the dokuwiki page containing all tables. Prepare the table in following format and some explanation.
The HV points shall be the ones you prepare during “Start DAQ HV scan” phase.
The attenuator you know from the source console.
The Web DCS Run number would be assigned as soon as you launch the scan. You can find it in “HVscan DAQ Run Registry”.
The HV point DAQ run you obtain from “Monitoring → PMON”. See section DAQ issus just below for more details. You would have to fill this value each time a new HV point starts. Or you can retrieve it in the log if you left for some time the room.
Below an example:
HV scan without changing the threshold done to test XXX
The 28/04 we started along night run with THR = 507
|Web DCS scan number||att||HV point DAQ run number||HV top eff||HV bot eff|
At the end of your shift please post a summary on elog: elog
To be done before source modification
if source ATT > 46
source att46_settings daqcontrol –daq-setvth –vth=510
look on top command.
Go to Monitoring → PMON. And survey on the right
The good situation is
Event XXXX –> A big number incrementing during spill.
Run: DAQ run number to write in dokuwiki table
You can also survey
At some point some basic DQM would be implemented in WEBDCS. Till then you can run the analysis code described here.