Difference between revisions of "Trigger Commissioning"

Revision as of 15:51, 20 November 2014

Below are some general steps describing the trigger commissioning with the photon beam.

Phase 1: Photon-beam Commissioning

• PS stand alone trigger (2 - 3 days) (Done)

- trigger with PSC

- read out PS and PSC

- trigger distribution through GTP. Use PSC self trigger if problems with GTP

Phase 2: Photon Beam in the Hall

• Tune FCAL trigger (2 - 3 days) (Done)

- trigger based on the global energy sum

- read out FCAL only, raw mode for fadc250

- adjust trigger parameters, tune timing

- study rates for various trigger thresholds

• Add CDC, FDC, BCAL, ST, TOF (TAGM/TAGH) to the read out (4 - 5 days) (Done)

- tune timing, adjust trigger prescalings

- take data with TAGM/TAGH and the PS for the tagging efficiency study and calibration

• Take some data for detector calibration

- production runs during nights if the system is robust

- run with high-energy thresholds

- low-energy thresholds for CDC/FDC calibration (may not work given the current FCAL performance)

• Tune BCAL trigger (2 - 3 days) (In progress)

- trigger based on the global energy sum

- alternate FCAL production runs with the BCAL trigger tuning

• Production runs with BCAL (FCAL & BCAL) triggers

• Tune TOF/ST triggers (4 - 5 days)

• Take additional calibration data for CDC/FDC

• Integrate & tune TAGM/TAGH to the trigger (low priority) (4 - 5 days)

Note, commissioning may require significantly more time depending on the system performance.

Global Trigger Performance at High Rate