1 / 10

Trigger Rate Summary

Trigger Rate Summary. Giuseppe Ruggiero (CERN) TDAQ WG Meeting CERN, 04/06/2014. L0 Trigger Summary: pnn (G.R. Note 14/01). L0 acceptance: N RICH Hits > 3 ns. L0 Muon rejection: GeV (!MIP) No in-time MUV3 candidate. L0 Energy: GeV GeV GeV. L0 Trigger Summary: pnn (cont’d).

jackie
Download Presentation

Trigger Rate Summary

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Trigger Rate Summary Giuseppe Ruggiero (CERN) TDAQ WG Meeting CERN, 04/06/2014 Giuseppe Ruggiero - TDAQ WG meeting

  2. L0 Trigger Summary: pnn (G.R. Note 14/01) • L0 acceptance: • N RICH Hits > 3 • ns • L0 Muon rejection: • GeV (!MIP) • No in-time MUV3 candidate • L0 Energy: • GeV • GeV • GeV Giuseppe Ruggiero - TDAQ WG meeting

  3. L0 Trigger Summary: pnn (cont’d) 18/12/2013 Giuseppe Ruggiero - TDAQ WG meeting Giuseppe Ruggiero - Physics WG meeting

  4. L0 Trigger Summary: Other Rare Decays (E. Goudzovski, Ch. Parkinson Note 14/07) 18/12/2013 Giuseppe Ruggiero - TDAQ WG meeting Giuseppe Ruggiero - Physics WG meeting

  5. Run Strategy (cont’d) • Proposal for a run strategy: • Beam tuning • Low intensity (<1%) kaon run with a minimal L0 trigger configuration • Detector commissioning • L0 trigger commissioning and definition • Sub-detector reconstructions • Muon run • Alignement • Reduced instensity (1-10%) kaon run with a more specific L0 trigger configuration • HLT trigger definition • Event reconstruction • Special runs (?) • low intensity beam in detector acceptance • «proton» run (?) • Reduced  «Full» intensity kaon run with L0 and, possibly, HLT trigger Giuseppe Ruggiero - Physics WG meeting

  6. L0 Trigger Strategy • Minimal configuration (minimum bias triggers): • Q1, Q1 × MUV3, Q1 × !MUV3, Q1 × NHOD, Q1 × NHOD × !MUV3, Q2, QX, ... • pnn main stream: • 2014 run (minimal): • Q1 × (RICH > 3) × !MUV3 × (E LKr < 20) • > 2014 run (full): • Q1 × (RICH > 3) × !MUV3 × (E LKr < 20) × (E LKr + MUV < 40) × (E SAV, LAV < 4) × (E LKr > 1.5 or E MUV > 8.5) Giuseppe Ruggiero - TDAQ WG meeting

  7. L0 Trigger Strategy • Other rare decays (already possible in 2014): • Q1 × (RICH > 3) × (E LKr > 10) / D • QX × (RICH > 10) × (E LKr > 10) / D • QX × (RICH > 10) × (MUV3  2 outer) • QX × (RICH > 10) × (MUV3  1 outer) × (E LKr > 10) • Control samples / Main kaon decay modes: • Minimum bias • Random • Specific for accidental (?) See for reference Note 14/01 & 14/07 Giuseppe Ruggiero - TDAQ WG meeting

  8. HLT Trigger Strategy Track + P + Z requirements applied on events passingpnnfull L0 without accidentals (x5 reduction) • General Minimal: • Nothing • pnn HLT: • At least one track reconstructed (full pattern recognition in straw) • Momentum between 10 and 45 GeV (no fit, only full pattern recognition) • Z vertex < 180 m (no fit, only full pattern recognition, vertex done as intersection with the noinal beam axis) • RICH, CHOD mulitplicity (?) • KTAG (?) • «Rare» decays HLT • HLT for control samples • Sample for accidental studies (KTAG) See for reference G.R. Physics WG 16/10/2013, Pinzino Physics WG 02/04/2014 Giuseppe Ruggiero - TDAQ WG meeting

  9. Tracks N tracks reconstructed in the spectrometer for events passing pnn L0. Very powerful against late Z decays, but may be sensitive to accidental activity. Accidental activity complicates the pattern recognition. Time resolution of good reconstructed tracks expected around 6 ns. Giuseppe Ruggiero - TDAQ WG meeting

  10. Conclusions • The L0 trigger strategy for the physics runs has been outlined. • The expected L0 rate is «well» within the L0 bandwith (enough safety margin). • Besides the trigger comissioning (priority this year!), we must profit from the 2014 to validate/improve the L0 strategy (as much as possible). • Some idea for the L1,2 level trigger are on paper, but the full strategy with all the implementation issues (rate - timing) have not been fully exploited. • The implementation of the L1,2 trigger should closely follow the development of the offline reconstructions (at least for the straws). • In my opinion the 2014 run must be used to define the strategy for the L1,2 triggers and to address all the issues related to the implementation. Giuseppe Ruggiero - TDAQ WG meeting

More Related