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CDF: Prospettive e upgrades

CDF: Prospettive e upgrades. INFN - Riunione della Commissione 1 Roma 13 Maggio 2003 Franco Bedeschi INFN-Pisa. Stato Tevatron e CDF Stato di avanzamento dell’analisi Calcolo (v. presentazione S. Belforte con richiesta sblocco SJ) Run IIB: Situazione generale

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CDF: Prospettive e upgrades

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  1. CDF: Prospettive e upgrades INFN - Riunione della Commissione 1 Roma 13 Maggio 2003 Franco Bedeschi INFN-Pisa • Stato Tevatron e CDF • Stato di avanzamento dell’analisi • Calcolo (v. presentazione S. Belforte con richiesta sblocco SJ) • Run IIB: • Situazione generale • Stato progetti a partecipazione italiana • Situazione MOF • Sommario richieste finanziarie SOMMARIO

  2. TeV Luminosity(old slide May 14, 2002) • Peak luminosity still low but improving • Best 2x1031 • Delivered/on tape • 40/25 pb-1 2x1031 Delivered Initial instantaneous Luminosity Integrated On tape

  3. TeV Luminosity(current situation) • Peak luminosity still low but improving • Best 4.2x1031 • Delivered/on tape • 230/170 pb-1 4x1031 Initial instantaneous Delivered Luminosity On tape Integrated

  4. Tev luminosity • 5-7 pb-1 /wk typical • Peak 8.3 pb-1

  5. Tev 2003 Luminosity goals • Goals for 2003 (S.Holmes: P5 report 3/26/03) • Base goals: • 200 pb-1 in FY 2003 • 10 pb-1/wk end of 2003 • 5.4x1031 typical • Stretch goals: • 320 pb-1 in FY 2003 • 15 pb-1/wk end of 2003 • 7.6x1031 typical (~max achievable without Recycler) • Currently within these limits ~150 pb-1 As of 5/6/03

  6. Tev goals beyond 2003 • Extended goals are still consistent with plan shown at the October ’02 DOE Accelerator Review • 6 month shutdown in 05 or 06 can decrease total by 1 or 2 fb-1 • Stretch goals max luminosity: 3x1032

  7. Tev goals beyond 2003 • Fermilab long range plan (M.Witherell P5 presentation – March 26, 2003)

  8. Status of CDF • Detector: • All systems commissioned and taking good quality data • ISL: more cooling lines opened during the January shutdown! • Only 1 cooling line (4% of total) remains plugged • Silicon (hardware/trigger) in general much more stable and reliable • ~90 % of all silicon systems currently taking data • L1 accept rate limitation removed • Some unrecoverable damage is piling up • % powered • % good • % bad • % error rate January 03 shutdown

  9. Status of CDF March 2003 Early June 2002 Silicon trigger coverage

  10. Status of CDF • SVX electronics very delicate • Still learning how to protect it from further damage • Understand now much better sources of damage • Some concern about possible continuous degradation over long periods of time

  11. Status of CDF • DAQ and trigger: • ~140 triggers • (e, m, t, n, g, jets, displaced track, many multi-object paths) • SVT very successful and improving • Typical running conditions: • Dynamic prescale  output bandwidth is always saturated! • More b and c phyics at lower luminosity deadtime ~ 3-4 %

  12. SVT maintenance and upgrade • 4 fold increase in number of patterns • Increase efficiency • Improve timing • Increase availability of “spares” • Use new technology (Standard Cell?) for new Chip • Replace only Amboard (12 + spares) • New Amboards are backward compatible • New chips are more powerful and provide more flexibility

  13. Physics Results • Data used for winter conferences 2003 • Data set collected Feb. 02 – Jan. 03 • 130 pb-1 delivered, 100 pb -1 on tape, ~70 pb -1 used for analysis  ~200 pb-1 on tape by summer • Will report highlights only • Preference to Italian group work • Strong impact on hadronic B/Charm physics • Many activities in Hi pt physics: top, EWK, tau, searches

  14. B Physics • J/y mm sample • Better L1 trigger  larger samples/pb-1 than Run 1 • Masses, exclusive lifetimes, signals for CP violation (J/y K0S,J/yf) • Lepton + displaced track samples • Lower lepton pt (>4 GeV) than Run 1 thanks to SVT • Hi stat. lifetimes, signals for Bd and Bs mixing • Hadronic samples with displaced tracks • Charm physics, signals and BR for Bs mixing, signals and BR for CP violation measurements • New for CDF thanks to SVT – Main focus of Italian groups • Padova, Pisa, Roma1 (Had. B convener), Trieste

  15. B Physics • Some examples of lepton samples L0bgJ/yL 385  22 Ds (muon only)

  16. Charm Physics Flavor tag with soft p from D* decay

  17. B Physics • Understand signals for Bs mixing • Measure relative BR

  18. B Physics • B+ f K+: • Prospect for measurement of relative BR and ACP J/y from tracks only

  19. B Physics CDF II simulation • B0 h+h- • Measure relative BR and direct ACP • Prospects for measurement of g —sum BdK BsKK Bd  BsK  BdKp = 0.58 ±0.06 (stat) Bdpp = 0.13 ±0.05 (stat) BsKK = 0.26 ±0.06 (stat) BsKp = 0.03 ±0.04 (stat) s(ACP) = 0.06 ± 0.15 (stat) 301 sig. events Not blessed

  20. High Pt physics (1) • Re-discover top! • Measure x-section in various channels • Low precision mass measurement • Italian contributions to study of backgrounds, b-tagging, jet energy corrections, fully hadronic final state (Bologna, Padova (top convener), Pisa, Roma1) • W and Z’s: • Measure x-sections in various channels • Including channels with tau’s! • Forward-backward asymmetries • Italian contribution on extension of electron ID to plug calorimeter region and on tau ID (Pisa)

  21. Top physics Use excess events in > 3 jets bins to measure the top cross section W events with b tagged jets from 57.5 pb-1 of data Data = 15 events Background =3.8 + 0.5 s (t t) = 5.3 + 1.9stat+ 0.8sys+ 0.8lum

  22. EWK Physics • Tau’s are much improved in Run 2 • Use W -> t n to test universality and optimize selection Charged particle multiplicity from W -> t n candidates Compares(W)*BR(W->t n) to s(W)*BR(W->e n) gt / ge = 0.99 + 0.04 Zt t in progress

  23. High Pt Physics (2) • Extensive study of jet properties and x-sections in process • Italian contributions on understanding of energy scales and jet resolution (Frascati, Pisa) • Searches for Physics Beyond the SM in progress • First results often improve run 1 results due to high CM energy • Italian contributions on Higgs search to multi-jets, LFV Higgs decays involving taus (Bologna, Pisa, Padova)

  24. Searches with jets More events at high masses than run 1 X10 s Mjj These limits already improve run 1 results Mjj

  25. The current detector was designed/built based on Run IIa specifications: Maximum instantaneous luminosity of 2×1032cm-2s-1. Integrated luminosity of 2 fb-1 ~ few years of operation CDF for Run IIB

  26. The Run IIb • Operating conditions for Run IIb: • Maximum instantaneous luminosity of 3 – 4 × 1032cm-2s-1. • No change in bunch spacing  more interactions/crossing • Total luminosity of up to 15 fb-1 integrated over many years of running • The Tevatron experiments have been preparing an upgrade to deal with these problems since 2001 • After many reviews (all favorable!) in 2001 and 2002 received from DOE CD-3a approval for equipment spending in FY 03 • Sensor and SVX4 orders have gone out in March 03 • Expect new decision from DOE on FY 04 on the time scale of late July 03 after DOE Accelerator Review • In May 02 agreed with INFN on envelope for Italian contributions • Some funds and SJ on 2003 INFN budget

  27. Run IIB reviews From M. Witherell P5 presentation

  28. Summary run IIB projects • Calorimetry upgrades • New central preradiator (CPR) (*) • Add timing to EM calorimeters (*) • Tracking upgrades • Full replacement of all silicon systems inside ISL (*) • Trigger upgrades • Improve resolution of L1 track trigger • Rebuild global L2 • Increase event builder throughput (*) Activities with contributions from Italian group

  29. Run IIB: Italian contributions • CPR: • CPR is an important device to identify electrons and understand their backgrounds • CPR is used to improve jet energy resolution • Old CPR is a slow wire chamber that cannot sustain the higher luminosity and rate of run II • New CPR: • Scintillator based  faster • Finer segmentation in h-f space • Should have planned it already for Run IIA ! • Installation requires substantial shut-down Run I hi-pt electrons p electrons MIPS

  30. Run IIB: Italian Contributions • Italy R&D summary: • Detailed study of tile performance in various configurations • Bicron, Dubna scintillator • Kurarai, PolHiTech fibers/mirroring • Grove shape (uniformity) • Choose Dubna/PolHiTech • Definition of production model with US and Dubna colleagues: • Scintillator cut and grooved in Dubna • Assembly partly in Italy and partly US Test tile

  31. Run IIB: Italian Contributions • CPR organization and responsibilities: • Steve Kuhlman (ANL) calorimeter project leader • Joey Huston: CPR project leader • Nicola Turini responsible for Italian contribution • Collaboration: • ANL, Fermilab, Michigan, Rockefeller: Design, assembly and test • Italy: Design, assembly and test/PS • Russia: Scintillator/grooved tiles • Japan (Tsukuba): Multianode Phototubes • Italian groups involved: • Pisa [Siena], Pavia, Roma1, Trieste, (Udine)

  32. Run IIB: Italian Contributions • Financial summary: • Total according to May02 plan: 202 k€ • Prototyping 20k€ (funded in 2002/03) • Scintillator 80k€ (funding in 2003/04) • Fibers & Connectors 45k€ (funding in 2003/04) • PS & Cables 57k € (funding in 2003/04) • Total SJ for 2003: 100 k€ • SJ adequate to cover 2003 needs • No urgency for release now • Will request release in September after final DOE approval

  33. Run IIB: Italian contributions • EM calorimeter timing: • Key to improve cosmic background rejection in g+MET events • Increase efficiency at low g momentum (no need to leak into Hadron Calorimeter) • X 30 yield of Zg • X 2-5 GSMB SUSY processes with N2g G final states Run II x30 run 1 acceptance ~ ~ Run 1

  34. Run IIB: Italian Contributions • R&D summary: • 3 each transition boards and discriminators prototypes made • After some iteration found cable with satisfactory properties • Now ready for production and installation • Cable installation is time consuming and needs long shut-down (summer 2003!) • Board installation can be done during short accesses

  35. Run IIB: Italian Contributions • EM timing organization and responsibilities: • Steve Kuhlman (ANL): calorimeter project leader • Dave Tobak: EM timing project leader • Marco Cordelli responsible for Italian contribution • Collaboration: • US (Texas, Chicago, Michigan, ANL, FNAL): TDC, splitters, infrastructure • Italy: transition boards and discriminators, cables • Italian groups involved: • LNF

  36. Run IIB: Italian Contributions • Financial summary: • Total according to May02 plan: 144 k€ • ASD 74 k€ (May02) 65 k€ (quote) • Transition boards 25 k€ (May02) 35 k€ (quote) • ASD  TDC cables 25 k€ (May02) 25 k€ (quote) • Prototyping 10 k€ (funded in 2002) • Total assignments for 2003: 60 k€ + 60 k€ SJ • Request release of SJ now to allow for full installation this summer during extended shut-down • All components provided by US groups already available • Delaying funding to September can imply many months of delay in the installation

  37. Run IIB: Italian contributions • Silicon Tracker: • Need replacement for radiation (and other) damage • Limit 4.3 fb-1 for L0 • 5.7 fb-1 for port cards • Other inner layers fail around 7 fb-1 • 4% f-chips and 8 % of z-chips already lost due to various accidents

  38. Run IIB: Italian Contributions CDF stave electrical prototype • R&D summary • 12 working modules and 3 electrical staves made • No problems found • Mechanical fixtures OK • Chip pre-production in progress. Back any moment • Sensors being produced: • Delivery starts June 03 and ends March 04 • Test on CAEN PS prototypes satisfactory • Working on simplifying system Fixtures made in Bologna

  39. Run IIB: Italian Contributions • Silicon organization and responsibilities: • N. Bacchetta, B. Flaugher: Project Leaders • Nicola Bacchetta: responsible for Italian contribution • Collaboration: • US: Infrastructure, SVX4, hybrids, assembly, DAQ • Japan: sensors • Italy: management, chip, power supplies, assembly fixtures, SVT mods • Italian groups: • Padova, Bologna, Roma1, (Pisa, Trieste for new mergers)

  40. Run IIB: Italian Contributions • Financial summary: • Total according to May02 plan: 473 k€ • Prototyping 55k€ (35k€ funded in 2002) • Chip 130k€ (funding in 2003) • Mechanical 38k€ (11 funded in 2003) • PS 150k€ (funding in 2004/5) • Total assignment for 2003: 11 k€ + 21 k€ SJ mechanical +130 k€ SJ for chip • SJ adequate to cover 2003 needs • No urgency for release now • Will request release in September after final DOE approval

  41. Status of MOF • Last IFC meeting inconclusive, but: • Scrutiny group should produce appropriate documentation by mid-June • Overall Operations budget to share defined to be ~3 M$ • Implies for Italy ~ 350 – 400 k$/yr, but: • Partial credit for computing contributions with penalty factors still under discussion • New rules will apply to 2004 if agreement is found at next IFC meeting in September

  42. Financial summary • Richieste di sblocco immediato: • 60 k€ per completamento EM timing per run 2B • ~122 k€ per upgrade FARM al CNAF (vedi prossima presentazione di Stefano Belforte) • Previsioni per Settembre: • Trasferte: • Sblocco attuale SJ + 10 MU finanziamento aggiuntivo per crescita gruppo in corso d’anno (+4 persone) • Run 2B: • Sblocco 130 k€ (chip) + 100 k€ (CPR)

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