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cquarant edited this page Jul 25, 2022 · 82 revisions

Table of Contents

Connect via X2GO

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 connect to udoo via ssh simply do:

ssh -p2222 -L8888:10.0.0.44:80 cmsdaq@pccmsdaq01.roma1.infn.it

N.B.: you have to be connected on INFN VPN if you want to connect from your PC

How to (re)start Autoprocess

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

Check List

  1. BEFORE opening the box, check if the HV is OFF, otherwise turn it OFF
  2. Always put an eye on the chiller conditions in the GUI (localhost:8888). COOLING OK and green
  3. 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?
  1. 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?
  1. After the processing finished, always validate the run on airtable if the run is good

Slow Control DCS GUI (Cooling + Temperature monitor)

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

Chiller Control

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)

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).

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 Control

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 on the **

HV Control

ALWAYS CHECK HV OFF BEFORE OPENING THE BOX!!
The NIM power supply is the first one on the left in the NIM crate below the box
Nominal voltage is 1500V, current ~350mA
**** NEW SETTING SINCE 2021/02/01: 1450V, 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
For the moment the HV is not controlled by the DCS GUI (the yellow 'HV OFF' button is not working), but should be operated manually.
Turn HV ON: use the switch on the NIM power supply (put right switch on the central position of HV ON)

LED run

A LED run should be done both at the begin and at the end of each day of datataking. 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).

TURN ON LED on DCS GUI (if not already on) IMPORTANT LED SHOULD BE TURNED ON/OFF MANUALLY FROM DCS GUI (ALSO FOR LEDSCAN)

Open DRS2DAQ GUI on the udoo:

./startDRS4DAQ.sh

Typical configuration:
Conf LED
Nevt 100000
Spill 20000
Interspill 2s
LEDSCAN checked
Tag LED_DAILY

Press Start and wait until the end of the run.
Check the LED run/processing status at Airtable - LY Bench.
When summary is complete VALIDATE THE RUN (REQUIRED in order to start the automatic process for following runs) Check these instructions if you want to Open airtable link from outside pccmsdaq01

Insertion of crystal inside the box

The crystal to be measured must be placed in the crystal holder.

The holder is a white plastic object with 4 slots for different crystal sizes (going from small (2.4mm thickness to 3.75mm). The 4th slot is never used.

The holder must be placed on the PMT support such that the crystal is in the North East (NE) corner when 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

REF Run

Put the ref bar (BAR #30, usually stored in a plastic bag inside the box) in the crystal holder following previous instructions.

It it Better to "Exit" if changing RUN configuration (eg from LED to SOURCE or viceversa) and restart DRS4DAQ

./startDRS4DAQ.sh

Typical configuration:
Conf SOURCE
Nevt 50000
Spill 10000
Interspill 0
LEDSCAN not checked
Tag REF_DAILY

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)

-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

Open airtable link from outside pccmsdaq01

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)

(or, to simultaneously look at the plots, can make: ssh -p2222 -L8888:10.0.0.44:80 cmsdaq@pccmsdaq01.roma1.infn.it)

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