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LYPlusBench
- Check List
- Connect via X2GO
- How to (re)start autoprocess
- Slow Control DCS GUI
- Chiller control
- LED control
- HV control
- LED run
- REF run
- LY measurement run
- Runtag convention
- Open airtable link from outside pccmsdaq01
- Check if the parts you want to measure are listed on Airtable - LYPlus Bench. If not SYNC PART LIST ON AIRTABLE
- 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 LED fiber (black cable from top of the box) inserted in the PMT window?
- is the PULSER ON (LED ON red button in the GUI)?
- is the HV ON and set at the nominal value (717 V)?
- 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 (717 V)?
- 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
Open X2GO Client on one of the two PC at the desk
Make sure that session type is set to XFCE
Double click on 'New PMT'
User: cmsdaq
Password: <lab password>
you are now connected to the udoo
N.B.: you have to be connected on INFN VPN if you want to connect from your PC
Autoprocess to be re-implemented
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 (10.0.0.104)
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!
Check temperature graph: ThingSpeak - LYPlusBench
Remember: Temperature should be XXX degree when external temperature is XX (and chiller is at XXX).
If ThingSpeak page is frozen, restart DCS service (NB the DCS GUI will also restart)
sudo systemctl restart dcs.service
Chiller lies on the left side of the box.
The chiller temperature is set at 18.0 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 DCS 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)
Check temperature graph: ThingSpeak - LYPlusBench
Remember: Temperature should be ~20.5-21.0 degree when external temperature is 24.5 (and chiller is at 18.0).
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.
LED pulser is on the shelf above the box. LED must be turned ON/OFF by releasing/pressing the 40 dB attenuator button NEVER TURN OFF THE PULSER
Nominal parameters when on are:
- ~10 kHz frequency
- 22 ns pulse width
- 1.38 V output
nominal value (717 V)