Data Acquisition System
DAQ Hardware
- Electronic Map of Mott Crates (January 29, 2013):
Media:ElectronicsMap_20130129.pdf
Media:ElectronicsMap_20130129.ppt
- Cabling of FADC, Scalers, and TDC (January 29, 2013):
- DAQ Timing (January 29, 2013):
Media:DAQ_Timing_20130129.pptx
How to run CODA
- From an accelerator machine: ssh -X idaq@opsmdaq0 (Note: idaq is the injector DAQ account and uses ssh authorized_keys for login - no need to enter password) and open few xterm & windows.
xterm 1: telnet iocmdaq1
xterm 2: mslqd (the msqlp database is usuaaly running unless opsmdaq0 was rebooted)
xterm 3: platform
xterm 4: codamaster
Choose the configuration: Mott_Sample
When the CODA MASTER panel appears, select Config => Enable Buttons.
Select ET System, Event Builder and Event Recorder. and Run Control. After doing that if you will click on Get Status you will find status of Event builder Event Recorder and of the ROC1. All buttons must be green.
Selecting Run Control the main CODA panel will appear.
Start and Stop a Run
After the opening of the Run Control panel, select in order:
- Sessions => inj
- Configurations => Cool => Mott_Sample
- Platform => Connect
- Configure
- Download
- Prestart
- Start
At the end:
- Stop
and if you want to apply a change or you need a new configuration:
- Reset
and start from number 5. When you are applaying a reset, do it twice (suggestion).
Errors, Warnings and FAQ
How to use the VME discriminator
The VME discriminator is the CAEN v895 whic has several possibilities. It is used in several configuration file but it must be set up correctly. The configurations used, at the moment, are:
- PEPPo_Sample, PEPPo_Cosmics, Annihilation_Sample, PEPPo_SemiInt
How to use the module, from every directory:
v895_config
An user interface will appear.
PMT refer to PEPPO cristal PMTs, A1 and A2 are for annihilation counter and cosmics are for cosmic paddles.
- Set thresholds for all the channels (thresholds are in mV) and select(tick) only channels used.
- To set the number of channels used as to generate one trigger select the Majority Level (MJL) or coincidence.
MJL = 1 means that, with at least one detector above the threshold, it generates the output signal. MJL = 3 you need at least 3 detector signals above the thresholds to generate the output signal
For Cosmic and Annihilation configurations MJL set to 2.
To close Coda use the codamaster panel and press kill all followed by the exit botton under 'configuration'.
How to use the JLAB VME discriminator
One can open a GUI in from opsmdaq0
/opt/idaq/lib/JLabdiscr/GUIDiscrim/src
