The CDF Silicon Vertex Trigger

Abstract

The CDF experiment's Silicon Vertex Trigger is a system of 150 custom 9U VME boards that reconstructs axial tracks in the CDF silicon strip detector in a 15 microsecond pipeline. SVT's 35 micron impact parameter resolution enables CDF's Level 2 trigger to distinguish primary and secondary particles, and hence to collect large samples of hadronic bottom and charm decays. We review some of SVT's key design features. Speed is achieved with custom VLSI pattern recognition, linearized track fitting, pipelining, and parallel processing. Testing and reliability are aided by built-in logic state analysis and test-data sourcing at each board's input and output, a common inter-board data link, and a universal "Merger" board for data fan-in/fan-out. Speed and adaptability are enhanced by use of modern FPGAs.

4 pages. Talk presented at the 9th Pisa Meeting on Advanced Detectors, La Biodola, Isola d'Elba, May 25-31, 2003

References in corpus (1)

• Measurement of the Mass Difference m(D_s^+) - m(D^+) at CDF II

Cited by in corpus (60)

• Observation of Bs-Bsbar Oscillations
• Flavor Physics in the Quark Sector
• Measurements of Inclusive W and Z Cross Sections in p-pbar Collisions at sqrt{s} =1.96 TeV
• Measurement of the Bs-Bsbar Oscillation Frequency
• Observation of the Baryonic Flavor-Changing Neutral Current Decay Lambda_b -> Lambda mu+ mu-
• Observation of Orbitally Excited B_s Mesons
• Measurement of the difference of CP-violating asymmetries in D0 -> K+K- and D0 ->pi+pi- decays at CDF
• Measurement of CP--violating asymmetries in D0 --> pi+ pi- and D0 --> K+K- decays at CDF
• Observation of Exclusive Dijet Production at the Fermilab Tevatron p-pbar Collider
• Observation of Bs->K+K- and Measurements of Branching Fractions of Charmless Two-body Decays of B0 and Bs Mesons in p-pbar Collisions at sqrt(s)=1.96 TeV
• Tevatron Run II combination of the effective leptonic electroweak mixing angle
• Observation of New Charmless Decays of Bottom Hadrons
• Measurement of the Moments of the Hadronic Invariant Mass Distribution in Semileptonic B Decays
• Search for Higgs Bosons Produced in Association with b-Quarks
• Measurement of the CP-Violating Phase beta_s in B0s -> J/Psi Phi Decays with the CDF II Detector
• Evidence for a bottom baryon resonance Lambda_b* in CDF data
• Measurement of Resonance Parameters of Orbitally Excited Narrow B^0 Mesons
• Search for the Decays $B_{(s)}^0\to e^{+}{\mu }^{-}$ and $B_{(s)}^0\to e^{+}{e}^{-}$ in CDF Run II
• First Evidence for $B_s^0\to \varphi \varphi$ Decay and Measurements of Branching Ratio and $A_{CP}$ for $B^{+}\to \varphi K^{+}$
• Search for New Particles Leading to Z+jets Final States in $p\bar{p}$ Collisions at $\sqrt{s}=1.96$ TeV
• Mass and lifetime measurements of bottom and charm baryons in $p\bar{p}$ collisions at $\sqrt{s}= 1.96 TeV
• Measurement of Polarization and Search for CP-Violation in $B_s^0\to \varphi \varphi$ Decays
• Track Extrapolation and Distribution for the CDF-II Trigger System
• Measurements of branching fraction ratios and CP asymmetries in B+/- ->D_CP K+/- decays in hadron collisions
• Operational experience, improvements, and performance of the CDF Run II silicon vertex detector
• Measurement of the masses and widths of the bottom baryons Sigma_b+- and Sigma_b*+-
• Measurement of correlated b-bbar production in p-pbar collisions at sqrt(s)=1960GeV
• Indirect measurement of ${\sin }^2{\theta }_W$ (or $M_W$) using ${\mu }^{+}{\mu }^{-}$ pairs from ${\gamma }^{\ast }/Z$ bosons produced in $p\bar{p}$ collisions at a center-of-momentum energy of 1.96 TeV
• Measurement of $\sigma ({\Lambda }_b)/\sigma (B^0)\times BR({\Lambda }_b\to {\Lambda }_c{\pi }^{-})/BR(B^0\to D^{+}{\pi }^{-})$ in $p\bar{p}$ Collisions at $\sqrt{s}=1.96$ TeV
• First Measurement of the Ratio of Branching Fractions B(Lambda_b to Lambda_c mu nu)/B(Lambda_b to Lambda_c pi)
• Measurement of indirect CP-violating asymmetries in $D^0\to K^{+}{K}^{-}$ and $D^0\to {\pi }^{+}{\pi }^{-}$ decays at CDF
• Measurements of branching fraction ratios and CP-asymmetries in suppressed B^- -> D(-> K^+ pi^-)K^- and B^- -> D(-> K^+ pi^-)pi^- decays
• Measurement of CP-violation asymmetries in D0 to Ks pi+ pi-
• First observation of the decay Bs --> Ds K and measurement of the ratio of branching fractions Br(Bs --> DsK)/Br(Bs --> Ds pi)
• Measurement of Bs0 --> Ds(*)+ Ds(*)- Branching Ratios
• Reduction of Statistical Power Per Event Due to Upper Lifetime Cuts in Lifetime Measurements
• Hadronic D and D_s Meson Decays
• Measurement of the Ratios of Branching Fractions B(Bs->Ds- pi+)/B(B0->D-pi+) and B(B+->D0bar pi+)/B(B0->D-pi+)
• Measurement of the Bs Lifetime in Fully and Partially Reconstructed Bs -> Ds- (phi pi-)X Decays in pbar-p Collisions at sqrt(s) = 1.96 TeV
• Measurement of the Ratio of Branching Fractions B(D0 -> K+ pi-)/B(D0 -> K- pi+) using the CDF II Detector
• First Observation of Bottom Baryon Sigma_b States at CDF
• Measurement of the Ratios of Branching Fractions B(Bs -> Ds pi pi pi) / B(Bd -> Dd pi pi pi) and B(Bs -> Ds pi) / B(Bd -> Dd pi)
• Measurement of the $B_c^{\pm }$ production cross section in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV
• Energy Calibration of b-Quark Jets with Z->b-bbar Decays at the Tevatron Collider
• Measurement of the $B^{-}$ lifetime using a simulation free approach for trigger bias correction
• The artificial retina processor for track reconstruction at the LHC crossing rate
• Search for Exotic S=-2 Baryons in proton-antiproton Collisions at sqrt(s) = 1.96 TeV
• Measurement of the branching fraction $\mathcal{B}({\Lambda }_b^0\to {\Lambda }_c^{+}{\pi }^{-}{\pi }^{+}{\pi }^{-})$ at CDF
• A signature-based search for delayed photons in exclusive photon plus missing transverse energy events from $p\bar{p}$ collisions with $\sqrt{s}=1.96$ TeV
• Search for Lambda_b -> p pi and Lambda_b -> p K decays in p-pbar collisions at sqrt(s) = 1.96 TeV
• A High-performance Track Fitter for Use in Ultra-fast Electronics
• Review of real-time data processing for collider experiments
• An additional study of multi-muon events produced in {\boldmath $p\bar{p}$} collisions at {\boldmath $\sqrt{s}=1.96$} TeV
• On the Utility Function of Experiments in Fundamental Science
• Decays of B_s Mesons and b Baryons: A Review of Recent First Observations and Branching Fractions
• Longevity Studies in the CDF II Silicon Detector
• Intel Stratix 10 FPGA design for track reconstruction for the ATLAS experiment at the HL-LHC
• Applications of Many-Core Technologies to On-line Event Reconstruction in High Energy Physics Experiments
• Charged Particle Tracking in Real-Time Using a Full-Mesh Data Delivery Architecture and Associative Memory Techniques
• B meson mixing at CDF II