The DAQ is running of 4 different nodes/PCs, that can be accessed by ssh using the user litv-exp.
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node | purpose | location
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x86l-124 | pleiades febex [inside, BGO] | ESR north arc
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x86l-131 | pleiades febex [outside, GAGG] | ESR north arc
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x86l-128 | timesorter | ESR north arc
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x86l-204 | ESR scaler DAQ | ESR Messhuette
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DAQ OPERATION
The entire DAQ is managed inside a virtual terminal (screen session) on x86l-128. In order to access this session you can login by ssh:
> ssh litv-exp@x86l-128.gsi.de
> screen -x pleiades
Switch the different tabs of the screen session using [F3] (left) or [F4] (right).
To exit (detach) the screen without closing it, press [CTRL]-[A], then [D].
FILE WRITING
Inside the DAQ screen session, go to tab <0 TSORT> and type
> show acq
it should show something like this:
-X86L-128:util :Name of output device = RFIO
-X86L-128:util :RFIO server atprfio, file CLOSED
-X86L-128:util :/mnt/raw.data/e0203_e0018/run0008.lmd
-X86L-128:util : 0.000 [MB] written to tape, 0.131 to file
-X86L-128:util :--------------------------------------------------------------
-X86L-128:util :Collected: 235.4708 MB, 7186 Buffers, 275811 Events.
-X86L-128:util :Rate : 33 KB/s, 1 Buffers/s, 30 Events/s
-X86L-128:util :--------------------------------------------------------------
The first two lines are important: the RFIO is connected as output device and the file is currently CLOSED.
If this is the case you can open a file by typing
> @openfile
it should show:
-X86L-128:transport : open file at server atprfio::
-X86L-128:transport :/mnt/raw.data/e0203_e0018/run0008.lmd
To close the file type
> close file
To check the current file status:
> show file
RESTART DAQ
In case the DAQ has to be restarted, you need to login to x86l-128:
> ssh litv-exp@x86l-128.gsi.de
> cd MBS/2025_pleiades_208Pb (/esr/usr/litv-exp/MBS/2025_pleiades_208Pb)
> ./killdaq.sh (screen session will be killed, wait until it finishes)
> ./daqstart.sh (new screen session will be created, all DAQs will be started)
Inside the screen session, check that MBS started on all three nodes without error (tabs <1 INSIDE>, <2 OUTSIDE> and <3 ESR>).
If yes, switch to <0 TSORT> tab and type
> @startup
and then
> @connect
STANDALONE OPERATION
Inside the screen session, switch to <0 TSORT> tab and type [CTRL]-[Z].
This kills the timesorter and leaves the single nodes in standalone operation.
Now change to the tab of the DAQ/detector you want to operate and type
> @connect
Now you can use the same commands to write files as given above.
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