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Gustavo Valdiviesso, 06/27/2018 08:29 PM


SBND VST Wiki

This is the wiki for the SBND's Vertical Slice Test (VST). This is an integration of the cold and warm electronics with DAQ and online monitoring using LArIAT's cryostat and TPC.

Taking VST Shifts

In summary, a VST shift is just like a LArIAT shift, with a few extras. So the LArIAT Wiki and Before your first shift page is where you want to start.

https://cdcvs.fnal.gov/redmine/projects/lariat-online/wiki/Before_your_first_shift_at_LArIAT

and, if you didn't do this yet, make sure you are in the SBND Shift ground at Google Hangouts: https://hangouts.google.com/group/cdpWmYQYwS3z31T62

At the start of the shift

  1. Contact the current shifter in the hangouts group to tell him/her that you are getting ready. This will give the current shifter time to fill in the End_of_Run report. Don't log into the hangouts yourself just yet.
  1. If you are doing a remote shift, connect to the Fermilab VPN and then to the VNC shared desktop, following these instructions:

https://cdcvs.fnal.gov/redmine/projects/lariat-online/wiki/How_to_set_up_your_shift_station

If you are at ROC-West then you are right in front of it and you can skip to the next step.

Log into the shifter's Hangouts account with:

sbndshift@gmail.com

with the current SBND DocDB password. The SBND Shift chat is used by the collaborators to communicate with the shifters and between themselves about the VST operations. For any collaborator, to add yourself to the chat follow this link: https://hangouts.google.com/group/cdpWmYQYwS3z31T62

Before anything else: How to set up your shift station

Remember to call MCR (x3721) at the beginning and ending of each shift!!!
Main Control Room (internationally) +1.630.840.3721

If remote: please use google hangouts to make the phone call to MCR, to be sure that it works with your setup! (it might not work on Firefox, use Chrome/IE/Safari).
We have heard a few complaints from MCR that this phone number is unreliable, but by actually using it to make the call, you will greatly reduce the chance of it not working if they try to call you.

In the LArIAT e-log, fill out the Start of Shift Checklist
Instructions to check how much remaining Wire Chamber Gas
Find out from the shifter before you if there are any issues, and read the MCR elog for status of accelerators
Refresh and read the Run Plan:
what beam request LArIAT wants
any interruptions to expect
special conditions or known problems

Log into the GMail account
sbndshift@gmail.com
with the current SBND DocDB password. The SBND Shift chat is used by the collaborators to communicate with the shifters and between themselves about the VST operations. For any collaborator, to add yourself to the chat follow this link
https://hangouts.google.com/group/cdpWmYQYwS3z31T62

List of experts to call can be found on this Google Spreadsheet
  1. Starting the DAQ
  2. Online Monitoring

Advanced Stuff

How to run the DAQ for the BNL-Nevis integration test

1. Make sure the Nevis crate and NIM bin are powered. Experts: (on-site) Davio Cianci, (off-site) José I. Crespo (Skype: josei.ca)
2. ssh into the DAQ machine
Log into the SBND gateway (or you can create an FNAL VPN connection and skip sbnd-daq00, not needed on FNAL site)

ssh -Y sbnd-daq00.fnal.gov

Log into the LArIAT gateway

ssh -Y lariat-gateway01.fnal.gov

Log into the DAQ server using the common sbnd account (reserved for DAQ)

ssh -Y sbnd@lariat-daq04

3. Go to the jcrespo/ directory

cd jcrespo

Run the DAQ-decoder-plotter script

./run_and_plot_sbnddaq.sh

and follow the instructions printed on screen. This script runs the DAQ in calibration mode (CALIB pulses are sent to the Magic Blue Box every 1 s) -- once you have collected the desired number of events, it requires you to stop the DAQ using CTRL + C twice --, then runs the binary decoder, and finally runs a ROOT analysis to plot the waveforms.

The data is saved in the directory /home/nfs/sbnd/jcrespo/runs
The script makes a new directory for each run named RunYearMonthDayHourMinutesSecond (e.g. Run20180620113511).
The raw binary data is the file named output_NevisTPCCALIB_generator.dat. For a hexdump, you can use

hexdump -v -e '8/2 "%04X ""\n"' output_NevisTPCCALIB_generator.dat | less

(it will display the data in 8 columns with 2 bytes each). The ADC data is encoded in the lower 12 bits (3 last hex characters) of the words beginning with "0".