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Level 1 Information
Level 3 Information
Very nice descriptions, along with links to helpful diagrams, can be found on the Trigger Line Definition/Convention pages from the Trigger Group.
Level 1 Trigger Information |
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3A&B* 3B&2A&2M 3B&B*&1G 3M&D2 1B 1Y 1Y&1B 2E 1M 2M 3M 4M M* 3M&M* |
M*&A+ EM* G* D2 D2*+ D2*&1M D2&1E M*&D2* M*&1B M*&5U HERinjection LERinjection bunchcross lightpulser |
Level 3 Trigger Information |
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| Nano-Database Variable Name | Description | Prescale Factor (2-May-2000, don't rely on this to stay constaint, but obtain the trgConfig object for current prescales) |
| L3OutBhabha | ||
| L3OutBhabhaFlat | ||
| L3OutBhabhaFlatOpr | * note below | |
| L3OutBunch | Triggers at a specific phase with respect the the ion clearing gap in the storage ring. | 80 |
| L3OutBunchOpr | * note below | 800 |
| L3OutCosmic | Level 3 Cosmic Trigger | 1 |
| L3OutCyclic1 | Random trigger. Events passing this are mixed in as background for simulation. | 1 |
| L3OutCyclic1Opr | * note below | 5 |
| L3OutDch | Output of the Level 3 DCH Trigger algorithm | |
| L3OutDchEmcPreVeto | Usually, a Bhabha veto is applied to the Dch and Emc triggers so that we don't write to tape so many Bhabhas. This line is used to save a portion of the rejected Bhabhas to study that veto (e.g., to make sure no real physics is being rejected). | 50 |
| L3OutEmc | Output of the Level 3 EMC Trigger algorithm | |
| L3OutGammaGamma | ||
| L3OutL1Open | Prescales events from L1, without running any L3 code. Allows a measurement of L3 efficiency. | 200 |
| L3OutL1OpenOpr | * note below | 10000 |
| L3OutLumi | Track-based luminosity monitor - requires 2 stiff back-to-back tracks | 10 |
| L3OutRadiativeBhabha | ||
| * All lines that end with "Opr" are further prescaled and are what is processed trough Opr. This means that there are some events are saved to the xtc file but are not further processed. Some of these events will/can be used for calibration. (e.g. the EMC is looking at the fill rate of the flat Bhabha's.) | ||
