Difference between revisions of "Run Group F"
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<b>DAQ config: ; Trigger file:rgf_inbending_v1_1.trg </b> (same for inbending and outbending) | <b>DAQ config: ; Trigger file:rgf_inbending_v1_1.trg </b> (same for inbending and outbending) | ||
− | # At the beginning of the shift: Call Daniel Carmen (PDL: (757) 876-1789) to start energizing the solenoid at full field (2420 A) [https://clasweb.jlab.org/wiki/images/d/dc/Hall_B_Solenoid_Power-Up_and_Power-Down_Procedure.pdf] and start energizing Torus at 1/2 maximum field (-1880 A) in out-bending polarity [https://clasweb.jlab.org/wiki/images/d/d6/Hall_B_Torus_Power-Up_and_Power-Down_Procedure.pdf]. | + | # At the beginning of the shift: Call Daniel Carmen (PDL: (757) 876-1789) to start energizing the solenoid at full field (2420 A) [https://clasweb.jlab.org/wiki/images/d/dc/Hall_B_Solenoid_Power-Up_and_Power-Down_Procedure.pdf] and start energizing Torus at 1/2 maximum field (-1880 A) in out-bending polarity [https://clasweb.jlab.org/wiki/images/d/d6/Hall_B_Torus_Power-Up_and_Power-Down_Procedure.pdf]. Once the magnets at the requested fields, please sumbit screenshots to logbook. clascss->Soleoind/Torus->Magnet Power Supply. |
# In parallel to 1, call RTPC expert to set target to “empty” (= 1 atm H2). | # In parallel to 1, call RTPC expert to set target to “empty” (= 1 atm H2). | ||
# In parallel to 1 and 2, Restore beam to the hall, first to the tagger dump, following the procedures described in [https://wiki.jlab.org/clas12-run/images/e/e3/Estab_beam.pdf]. | # In parallel to 1 and 2, Restore beam to the hall, first to the tagger dump, following the procedures described in [https://wiki.jlab.org/clas12-run/images/e/e3/Estab_beam.pdf]. | ||
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# Engage orbit locks and ascertain that they are stable. | # Engage orbit locks and ascertain that they are stable. | ||
# Set alarms and interlocks. | # Set alarms and interlocks. | ||
+ | # Call the MCC and tell them that the beam is good and must keep the beam current at 5 nA. | ||
+ | # TURN HV ON for all the detectors. | ||
# Collect data with standard trigger at low beam current and check occupancy, rates, and trigger rates. | # Collect data with standard trigger at low beam current and check occupancy, rates, and trigger rates. | ||
− | # Ramp up current to desired value ( | + | # Ramp up current to desired value (5, 10, 25, 50, 75, 100, 150, 175, 200, 225, 250 nA), while recording trigger rates, DC and RTPC occupancies, dead times and overall data rate.For every beam current, please submit a logbook entry with a screenshot of the beamline overview from clascss->Beamline->overview. |
− | # Re-check alarms and interlocks, rates and occupancies and make adjustments as necessary | + | # Re-check alarms and interlocks, rates and occupancies and make adjustments as necessary. |