Trigger History
From HallCWiki
Dec 2017
- Dec 7 2017 : NIM modules for setting the pulse width of S1X,S1Y,S2X and S2Y before the HODO 3/4 trigger changed to 758 from 752 in SHMS and HMS Log Entry
- Dec 8 2017 : HMS/SHMS HODO thresholds at 30mV. Log Entry
- Dec 8 2017 : Oscilliscope pictures of HMS trigger using EDTM Log Entry
- Note that this quickly changed and use later pictures.
- Dec 8 2017 : Oscilliscope pictures of SHMS trigger using EDTM Log Entry
- Note that this quickly changed and use later pictures.
- Dec 12 2017 : Oscilliscope pictures of HMS trigger using beam. Log Entry
- In HMS HODO 3of4 S1X is now sets the timing. All widths are 50ns.
- In HMS EL_LO which is a 2/3 from PR_LO,STOF and HODO 3of4, the STOF sets the timing.
- All other signal widths at 50ns.
- Dec 19 2017 : Oscilliscope pictures of SHMS trigger using beam. Log Entry
- In SHMS HODO 3of4 S1X is now sets the timing. All widths are 100ns.
- In SHMS EL_LO which is a 2/3 from PR_LO,STOF and HODO 3of4, the STOF sets the timing.
- All other signal widths at 50ns.
- Dec 21 2017 : Oscilliscope pictures of SHMS/HMS coincidence using beam. Log Entry
- Signal widths at 50ns.
- HMS sets timing.
- Elastic data with SHMS p = -1.816, theta = 25.01 and HMS p = +0.957, theta = 53.3
Jan-July 2018
- The HMS triggers (when HMS single DAQ mode):
- Trig1= HODO 3of4
- Trig2 = EL_REAL
- Trig3 = El_CLEAN
- The SHMS triggers (when SHMS single and coin DAQ mode):
- Trig1 = SHMS HODO 3of4
- Trig2 =SHMS EL_REAL
- Trig3 =SHMS El_CLEAN
- Trig4 = HMS HODO 3of4
- Trig5 not used
- Trig6 = Coin SHMS HODO 3of4 && HMS HODO 3of4
- Jan 15 2018: Shift the STOF by 15ns in the SHMS and HMS EL_LO triggers. Log Entry
- Jan 18 2018 : Adjusted HMS timing in the coincidence trigger for having both spectrometers with beta near 1. Log Entry
- Oscilliscope picture of trigger. Log Entry
- Jan 23 2018 : Removed the HMS STOF from reference time signal. Log Entry
- SHMS STOF was also removed, though no logbook entry about it.
Aug 2018
- Aug 9 2018 : Removed El_CLEAN from SHMS/HMS reference time Log Entry
- Work done over the summer to adjust SHMS hodoscope cable lengths to compensate for the two different PMT types used in the hodoscope with different transit times.
Sept 2018
- Added additional coincidence trigger as TRIG5. Changed SHMS TRIG3 to be HMS EL_REAL.
- The HMS triggers (when HMS single DAQ mode):
- Trig1= HODO 3of4
- Trig2 = EL_REAL
- Trig3 = El_CLEAN
- The SHMS triggers (when SHMS single and coin DAQ mode):
- Trig1 = SHMS HODO 3of4
- Trig2 = SHMS EL_REAL
- Trig3 = HMS El_REAL
- Trig4 = HMS HODO 3of4
- Trig5 = Coin SHMS HODO 3of4 && HMS EL_REAL
- Trig6 = Coin SHMS HODO 3of4 && HMS HODO 3of4
- Sept 27 2018: Check of the reference times Log Entry.
- Sept 27 2018: Oscilliscope pictures of HMS trigger Log Entry.
- All HMS signal width are 50ns.
- For HMS EL_LO_LO , HMS HODO 3of4 takes timing.
- Sept 27 2018: Oscilliscope pictures of SHMS and COIN trigger Log Entry.
- All SHMS signal width are 50ns for triggers, except S1_OR and S2_OR going into STOF which looks like about 30ns.
- For SHMS EL_LO_LO , SHMS HODO 3of4 takes timing.
- For both coincidence triggers, the SHMS is 100ns wide and HMS is 60ns wide. With HMS setting the timing.
- Oct 2 2018: Adjusted widths of SHMS/HMS coincidence signals for TRIG5. Oscilliscope pictures Log Entry.
- SHMS Hodo 3of4 width reduced to 60ns.
- HMS EL_REAL width reduced to 20ns
- The TRIG6 is now SHMS Hodo 3of4 width of 60ns && HMS Hodo 3of4 width of 60ns.
- Nov 27 2018: Polarity flip of the reference times. Log Entry.
- This applies to post coincidence run 6576.
- Made the coincidence time resolution was improved to match what was seen in Spring 18.
- Detailed discussion Log Entry.
Feb 2019
- Feb 2019 :DAQ changes for the J/Psi experimentLog Entry.
- Noble Gas Cerenkov replaced the Heavy Gas Cerenkov in the SHMS EL_REAL
- Feb 9 2019: Oscilliscope pictures of HMS trigger Log Entry.
- Feb 9 2019: Oscilliscope pictures of SHMS trigger Log Entry.
- Feb 9 2019: Oscilliscope pictures of Coin trigger Log Entry.
- TRIG6 has SHMS Hodo 3of4 width of 60ns && HMS Hodo 3of4 width of 60ns.
- Feb 9 2019: TRIG5 could possibly Coin SHMS HODO 3of4 && HMS EL_CLEAN Log Entry.
- Mar 5 2019: DAQ reverted back to CSV and KAONLT setup Log Entry.
Dec 2019
- Dec 6 2019 : Trigger setup for the A1N/D2N experiments [1]
- SHMS Noble gas cerenkov in EL_REAL/EL_CLEAN trigger
- The HMS triggers (when HMS single DAQ mode):
- Trig1= HODO 3of4
- Trig2 = EL_REAL
- Trig3 = El_CLEAN
- The SHMS triggers:
- Trig1 = SHMS HODO 3of4
- Trig2 = SHMS EL_REAL
- Trig3 = SHMS El_CLEAN