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LYBench
Open X2GO Client on one of the two PC at the desk
Make sure that session type is set to XFCE
Double click on PMT_real
User: cmsdaq Password:
you are now connected to the udoo: 10.0.0.44
To be done if automatic data processing does not start
how to restart automatic process
OPEN NEW TERMINAL
sudo systemctl stop autoprocess
ps aux | grep process.py
kill all process if any, then:
sudo systemctl start autoprocess
to check the status do:
sudo systemctl status autoprocess
- BEFORE opening the box, check if the HV is OFF, otherwise turn it OFF
- Always put an eye on the chiller conditions in the GUI (localhost:8888). COOLING OK and green
- if a LED run:
- is the PULSER ON (LED ON red button in the GUI)?
- is the HV ON and set at the nominal value?
- is the LEDSCAN checked if starting a LEDSCAN run?
- if a SOURCE run:
- is the LED PULSER OFF (LED OFF yellow button in the GUI)?
- is the HV ON and set at the nominal value?
- is the holder put in the correct position (ie NE corner when looking from the door and above the PMT)
- am I using the correct hole in the holder for the size of the crystal?
- is the source in the box?
- After the processing finished, always validate the run on airtable if the run is good
IMPORTANT: DO THE FOLLOWING STEPS ONLY IF THERE IS NO OPEN FIREFOX WITH A GUI ALREADY RUNNING. 2 GUIS CONFLICT!!
Open firefox on PMT bench udoo (10.0.0.44)
Go to page localhost:8888
DO NOT UNPLUG/PLUG ARDUINOS OR OTHER USB CABLES UNLESS YOU KNOW WHAT YOU'RE DOING, OTHERWISE PORT NAMES WILL BE
CHANGED!
Currently:
/dev/sensor_1 External temperature+humidity sensors
/dev/sensor_0 Internal temperature+humidity sensors
/dev/ttyUSB0 Lauda Chiller
/dev/usbtmc0 LED Pulser
Check temperature graph:
https://thingspeak.com/channels/781520
Remember: Temperature should be ~22.3 degree when external temperature is 26 (and chiller is at 18.5).
Chiller lies on the left side of the box.
The chiller temperature is set at 18.5 degrees. Pump flow config is set at 3 IMPORTANT DO NOT CHANGE PARAMS UNLESS YOU KNOW WHAT YOU'RE DOING
The status of the chiller is reported in the GUI. Normally the cooling should be COOLING OK and green
Turn OFF chiller: simply press the COOLING button on the DCS GUI, which should become yellow (COOLING OFF), after few second. Turn ON chiller: to turn back ON simply press the button again, which after few seconds should become green (COOLING ON)
Every 2 weeks please check the level of the water (please use only demineralised water to refill, which should be close to the chiller)
The chiller should be kept ON unless there will be no measurements for more than 2 weeks.
Push the yellow LED OFF button on the DCS GUI. The button will become RED and LED ON. Push again to switch OFF
Parameters: 20 KHz, High Value: 4.22V, Low Value, 0V, Length: 60ns
IMPORTANT DO NOT CHANGE PARAMS UNLESS YOU KNOW WHAT YOU'RE DOING. JUST SWITCH ON/OFF FOR NORMAL OP
LED Voltage Scan is now done using DRS4DAQ with the corresponding switch
NIM power supply. Nominal voltage is 1500V, current ~350mA
**** 1450V new setting since 2021/02/01, giving PE ~16 ADC counts. @1350V PE signal very small
IMPORTANT DO NOT CHANGE CONFIG UNLESS YOU KNOW WHAT YOU'RE DOING. JUST SWITCH ON/OFF FOR NORMAL OP
REMEMBER TO CHECK THE HV BEFORE OPENING THE BOX!!
The NIM power supply is the one on the left in the NIM crate below the box
For the moment the HV is not controlled by the GUI, but should be operated manually
The holder is a white plastic object with 4 holes for different sizes of the crystal (going from small (2.4mm thickness to 3.75mm) The 4th size is never used.
The holder is squared and can be placed in any orientation on the PMT support. By convention we place the crystal in the North East (NE) corner when is seen from above the PMT (and clearly from the door box).
Always rotate the holder such as the crystal lies in this position on the PMT photocathode
~/startDRS4DAQ.sh
IMPORTANT LED SHOULD BE TURNED ON/OFF MANUALLY FROM DCS GUI (ALSO FOR LEDSCAN)
Typical configuration:
LEDSCAN: Nevt 100000 Spill 20000 Interspill 2s LEDSCAN checked
SOURCE: Nevt 50000 Spill 10000 Interspill 0 LEDSCAN not checked
Typical Workflow:
- take a LEDSCAN run at the beginning of each day of datataking
- VALIDATE LEDSCAN RUN when it is processed
- take SOURCE runs for the day (if LEDSCAN is not validated the analysis of source runs won't start)
Please respect the convention for the name:
LED: eg LED-20191113-SCAN-4, LED-YYYYDDMM-SCAN-NRUN
SOURCE: eg BAR000040-WS3-NW-NC-P2-SL-H2-20191113-1, remember H2 is the hole in the support for square crystal (geo2), H1 for small crystals (geo3), H3 for big crystals (geo1)
Better to "Exit" if changing RUN configuration (eg from LED to SOURCE or viceversa) and restart DRS4DAQ
-Insert the correct TAG for the run:
- REF_DAILY for the reference run
- LED_DAILY for the LED run
- PREIRR or POSTIRR for the crystal measurements
Make an ssh tunnel to pccmsdaq01: ssh -L8888:10.0.0.44:80 cmsdaq@pccmsdaq01.roma1.infn.it plots can be seen under: 127.0.0.1:8888 (note that the last link of the directory containing the plots doesn't work, one needs to re-add the ":8888" port)
To connect to udoo: ssh -p2222 -L8888:10.0.0.44:80 cmsdaq@pccmsdaq01.roma1.infn.it
(or, to simultaneously look at the plots, can make: ssh -p2222 -L8888:10.0.0.44:80 cmsdaq@pccmsdaq01.roma1.infn.it)