To-Do list

This section is aimed at helping the Device Physicist remember the list of things that need to be done prior to the S800 tuning.

• Install the focal-plane scintillator with the right thickness (1mm or 5mm)

• Ensure that the object scintillator is in good condition and has enough shimming positions to withstand the expected rates during the course of the experiment. The guideline document describing the installation and shimming procedure can be accessed here

• Arm dump switches

• Make sure object ion gauge is off

• Ensure viewer is ready in S800 target station (pivot point)

• Make sure gas bottles for FP detectors are open

• Make sure Intermediate PPACs have gas

• Start Software applications (in computer u4pc8)

• For each experiment, an S800 Device Physicist will, after backing up whatever is to be backed up, install S800 DAQ and make it ready for the experiment. They do so as described in the following.

• ~/s800develop/S800DAQ/ is a clone of the master branch of the git repository S800DAQ (https://git.frib.msu.edu/S800Group/S800DAQ). Any changes are to be reflected and updated.
• Compare files in the subdirectory Configurations (e.g. diff {$S800DAQDIR,$S800DEVELOPDIR/S800DAQ}/Configurations/s800crdc1v.tcl). The files to be compared include s800crdc1v.tcl, s800crdc2v.tcl, MCFD16.tcl, trigger.tcl, s800daqinitthresholds.tcl. Examine the changes made during the previous experiment and update the files in ~/s800develop/S800DAQ/ where necessary.
• Manually add the modified files and commit the changes, and git push origin master.

• $ buster_load
• $ ~/bin/gouninstalldaq/ and follow the script instructions.

• $ ~/bin/goinstalldaq/ and follow the script instructions.
• The script should relink stagearea to the right place, provided that the proper experimental number is given. After typing ls -l ~/stagearea in a u4pc8 terminal, you should see: /user/s800/stagearea → /mnt/events/operations/s800/exxxxx, where xxxxx corresponds to the experiment number. If the experiment number is not right, contact S800 Device Physicist.

• Set S800 DAQ in Slave mode and enable multilogger to record S800 data in the s800 stagearea.

• Check scalers while running S800 DAQ

• Put 10 Amps in Spectrograph dipoles

• Start gas in detectors

• Enable CRAD04 with a rate limit of 20 kHz (CRAD04 looks at E1 up FP scintillator) via PanelMate CRAD_RF_Intlks.ui (PAGE 01) located in directory \\exp\files\control\ncsdata\General\Qt\Templates

• Set spectrograph Brho (coordinate with experimenters)

• Verify with S800 Device Physicist that S800 DAQ software is uninstalled. This can be done by typing script gouninstalldaq (please, contact Device Physicist if you are not sure of what you're doing)

• Unbias detectors, CRDC interface boards, CRDCs gate, etc

• Remove gas from CRDCs and Ion Chamber