Seeding of the EF with RoI
The following tables compares the reconstruction time needed if ATRECON is run at the default settings used for the comparision with Pralavorio's work with the use of LVL2 RoI as seeds.
The efficiencies are specified as percentage of reconstructed electrons to generated electrons on the given trigger step. In parenthesis the efficiency compared to the previous step is given. The jet rate on each trigger level is given in Hz, in praenthesis the rejection from one level to the next is quoted.
The reconstruction time is measured in seconds on the ATLAS shift machines using the extended timestamps. The three times given are needed to reconstruct 50%, 80%, and 95% of the events which passed LVL2.
Lolumi: 20GeV pT electrons vs. dijets with pT>17GeV
| Trigger step | Default setting | LVL2 RoI guided | ||||||
|---|---|---|---|---|---|---|---|---|
| Efficiency | Recon. time 50/80/95% | Rate | Recon. time 50/80/95% | Efficiency | Recon. time 50/80/95% | Rate | Recon. time 50/80/95% | |
| LVL1 (EM20I) | 92.6% | n/a | 5850Hz | n/a | 92.6% | n/a | 5850Hz | n/a |
| LVL2 (e20i) | 82.0% (88.5%) | n/a | 140Hz (42) | n/a | 82.0% (88.5%) | n/a | 140Hz (42) | n/a |
| EM calo Etmin=5GeV | 80.4% (98.0%) | 0.44/0.46/0.49s | 85Hz (1.6) | 0.54/0.66/0.89s | 80.4% (98.0%) | 0.43/0.44/0.45s | 84Hz (1.7) | 0.41/0.43/0.44s |
| ID (xKalman) ptmin=5GeV | 76.6% (95.3%) | 0.04/0.07/0.15s | 57Hz (1.5) | 0.6/1.5/7.7s | 76.7% (95.4%) | 0.03/0.08/0.16s | 54Hz (1.6) | 0.3/0.6/1.2s |
| Matching | 75.2% (98.1%) | n/a | 41Hz (1.4) | n/a | 75.4% (98.3%) | n/a | 39Hz (1.4) | n/a |
Hilumi: 30GeV pT electrons vs. dijets with pT>17GeV
| Trigger step | Default setting | LVL2 RoI guided | ||||||
|---|---|---|---|---|---|---|---|---|
| Efficiency | Recon. time 50/80/95% | Rate | Recon. time 50/80/95% | Efficiency | Recon. time 50/80/95% | Rate | Recon. time 50/80/95% | |
| LVL1 (EM30I) | 94.4% | n/a | 22kHz | n/a | 94.4% | n/a | 22kHz | n/a |
| LVL2 (e30i) | 80.7% (85.5%) | n/a | 470Hz (46) | n/a | 80.7% (85.5%) | n/a | 490Hz (45) | n/a |
| EM calo Etmin=5GeV | 79.0% (97.9%) | 0.45/0.51/0.64s | 315Hz (1.5) | 0.62/0.79/1.02s | 79.0% (97.9%) | 0.39/0.42/0.44s | 330Hz (1.5) | 0.42/0.44/0.47s |
| ID (xKalman) ptmin=5GeV | 75.1% (95.0%) | 8.2/17.0/39.4s | 157Hz (2.0) | 20.0/60.1/114.9s | 75.1% (95.1%) | 7.4/12.8/19.8s | 165Hz (2.0) | 7.8/12.8/20.0s |
| Matching | 73.4% (97.8%) | n/a | 134Hz (1.2) | n/a | 73.6% (97.9%) | n/a | 134Hz (1.2) | n/a |
