Difference between revisions of "Run Group M"
Jump to navigation
Jump to search
Line 131: | Line 131: | ||
* Restore physics quality beam for the production running at 3-pass, start from the tagger dump (see instructions [https://github.com/JeffersonLab/clas12-manuals/raw/master/beamline/manual/beam_estab.pdf]) | * Restore physics quality beam for the production running at 3-pass, start from the tagger dump (see instructions [https://github.com/JeffersonLab/clas12-manuals/raw/master/beamline/manual/beam_estab.pdf]) | ||
* After physics quality beam is established to the Faraday cup dump, proceed with the following: | * After physics quality beam is established to the Faraday cup dump, proceed with the following: | ||
− | ** Fill the target with LH, see instructions at [] | + | ** Fill the target with LH, see instructions at [https://github.com/JeffersonLab/clas12-manuals/raw/master/target/Target_Shift_Worker_RGM_2021.pdf] |
− | ** Establish production current for LH2 target (limit 80 nA), run DAQ with the production trigger | + | ** Ask for 10 nA beam, check if rates in the detectors are reasonable |
+ | ** Establish production current for LH2 target (limit 80 nA), run DAQ with the production trigger Configuration <b> PROD66 </b>, trigger <b> rgm_6GeV_inb_v1_0.trg </b> and increase beam current to 80 nA with steps of 5 nA. At every step record detector and DAQ rates (dump GUIs into logbook), run the monitoring and record DC R1 occupancy. Select the beam current when DC R1 occupancy are <5% and/or the DAQ LT is >95%(consult with RC). | ||
+ | ** Start a new run with the selected beam current, use Configuration <b>PROD66_PIN</b> and the production trigger <b> rgm_6GeV_inb_v1_0.trg </b>, take 2 hours of data. | ||
** Trigger Validation Runs with the established conditions (Config. <b> PROD66_PIN </b>: | ** Trigger Validation Runs with the established conditions (Config. <b> PROD66_PIN </b>: | ||
# Random trigger @30 kHz 4 hours with the trigger <b> rgm_6GeV_inb_RNDM_30kHz_v1_0.trg </b> | # Random trigger @30 kHz 4 hours with the trigger <b> rgm_6GeV_inb_RNDM_30kHz_v1_0.trg </b> |