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| | ''' Phase III. Performance at high rate''' | | ''' Phase III. Performance at high rate''' |
| | * Perform luminosity scan | | * Perform luminosity scan |
| − | :* Beam and detector conditions:
| + | * Beam and detector conditions: |
| − | ::: - beam flux 2. - 5. x 10^7 photons/sec.
| + | :: - Beam flux 2. - 5. x 10^7 photons/sec. |
| − | ::: - Exclude CDC/FDC/TOF at high rate if detectors are not ready (calibrate baselines if needed)
| + | :: - Exclude CDC/FDC/TOF at high rate if detectors are not ready (calibrate baselines if needed) |
| − | :::: (repeat tests when sub-detectors are ready)
| + | ::: (repeat tests when sub-detectors are ready) |
| − | :* Study L1 rate for various thresholds
| + | * Study L1 rate for various trigger thresholds |
| − | ::: - Tune trigger parameters (busy thresholds, TS trigger inhibit thresholds) | + | :: - Trigger types: FCAL & BCAL (& ST), TAGH & ST, (FCAL, BCAL) |
| − | ::: - Check performance of electronics modules at high rate
| + | :: - Ajust trigger parameters (busy thresholds, TS trigger inhibit thresholds) |
| − | :::: (reveal electronics problems and limiting factors: data rate, etc.)
| + | :: - Check performance of electronics modules at high rate |
| − | :* Take data for different thresholds and different luminosity
| + | ::: (reveal electronics problems and limiting factors: data transmission rate, etc.) |
| − | | + | :: - Study L1 trigger rate limitations |
| − | * PS trigger
| + | * Take data for several thresholds at different luminosity (check efficiency) |
| − | ::- PS trigger efficiency studies (using TAGM/TAGH, FCAL & BCAL triggers) | + | |
| − | ::- Threshold scans
| + | |
| − | | + | |
| − | * FCAL & BCAL main production trigger | + | |
| − | ::- threshold scans for individual FCAL and BCAL triggers (study trigger time dependence on thresholds, rates)
| + | |
| − | ::- collect data samples using the FCAL and BCAL individual triggers
| + | |
| − | ::- introduce individual thresholds for BCAL and FCAL energies for the FCAL & BCAL trigger
| + | |
| − | ::- tune timing offsets between BCAL and FCAL (rate scans)
| + | |
| − | ::- trigger rate studies. Adjust energy thresholds. Take data for different thresholds and different luminosity
| + | |
| − | | + | |
| − | * Implement TS FP triggers
| + | |
| − | ::- BCAL LED
| + | |
| − | ::- FCAL LED
| + | |
| − | ::- PS LED
| + | |
| − | | + | |
| − | * Implement multiple triggers (initial implementation)
| + | |
| − | ::- combine PS, FCAL & BCAL, FCAL, and BCAL triggers
| + | |
| − | ::: (note FCAL and BCAL triggers may be taken out from the production trigger later on).
| + | |
| − | ::- add TS periodic pulser
| + | |
| − | ::- add TS FP triggers
| + | |
| − | | + | |
| − | * TAC trigger
| + | |
| − | ::- implement TAC stand alone trigger
| + | |
| − | ::- implement configuration with the PS and TAC triggers. Read out TAGH/TAGM crates
| + | |
| − | | + | |
| − | | + | |
| − | | + | |
| − | | + | |
| − | * Implement triggers for efficiency studies (have to decide what would be the best rigger for this, besides the minimum bias)
| + | |
| − | | + | |
| − | * Implement TAGH/TAGM triggers
| + | |
| − | ::- combine TAGH/TAGM with other trigger types
| + | |
| − | | + | |
| − | * Trigger for FDC alignment (ST / TOF + FCAL )
| + | |
| − | | + | |
| − | * Trigger for FCAL MIPs calibration ( ST & TOF )
| + | |
| − | | + | |
| − | * Improve BCAL & FCAL triggers at low FCAL energies (use coincidences between FCAL and ST/TOF)
| + | |
| − | | + | |
| − | | + | |
| − | ::* PS trigger (TAGM bias voltage calibration, TAGH, PS voltage scans, efficiency studies). Run TRD in parallel, if no problems.
| + | |
| − | ::: - test/debug trigger (2 - 3 hours).
| + | |
| − | ::: - production (1 - 2 night shifts)
| + | |
| − | :::: run conditions depend on the accelerator performance (200 nA electron current, 10^-4 radiator, 10^-3 converter + Be converter, TBD)
| + | |
| − | ::* Trigger for FDC alignment (ST/TOF + FCAL)
| + | |
| − | ::* Trigger for FCAL MIPs calibration (ST & TOF)
| + | |
| − | ::: - test/debug trigger (3 - 4 hours, CDC/FDC switched off)
| + | |
| − | ::: - production at low luminosity with the FDC switched on (1 - 2 night shifts for both the FDC alignmnent and FCAL MIP triggers)
| + | |
| − | ::* Debug FCAL/BCAL trigger
| + | |
| − | ::: - trigger studies (3 - 4 hours)
| + | |
| − | ::: - take data with the BCAL/FCAL trigger, FCAL/BCAL thresholds will be tuned, chambers can be switched on depending on run conditions (1 - 2 night shifts).
| + | |
| − | ::: - test trigger performance at high rate. Take data with 'nominal' trigger thresholds.
| + | |
| − | ::* Trigger generated by TAGM/TAGH
| + | |
| − | ::: - trigger studies (3 - 4 hours)
| + | |
| − | ::: - combine TAGH/TAGM with other trigger types.
| + | |
| − | ::: - take data with the total absorption counter, 2x10-5 radiator, a few nA current (TBD) (2 - 3 hours)
| + | |
| − | ::* Special trigger requests from sub-detectors
| + | |
