1 / 24

Research & Education Program

Research & Education Program. presented by Bob van Eijk BAC Meeting University of Twente 11 November 1997. Contents. Research at the The experiment at the LHC Other interests... Education Lectures at the University of Twente Opportunities for UT-students at the NIKHEF.

daria-hunter
Télécharger la présentation

Research & Education Program

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. Research & Education Program presented by Bob van Eijk BAC Meeting University of Twente 11 November 1997 Research & Education Program, Bob van Eijk

  2. Contents • Research at the • The experiment at the LHC • Other interests... • Education • Lectures at the University of Twente • Opportunities for UT-students at the NIKHEF Research & Education Program, Bob van Eijk

  3. The Large Hadron Collider • Proton-proton collider (7 Tera (1012) eV per proton beam) • use the current LEP (e+e- collider) infrastructure at CERN • new generation of experiments (start in 2005) • high luminosity in 2007 (Lmax=1034 cm-2 s-1 = 105 pb-1 / year) • Standard Model of electroweak interactions • Higgs (the missing particle of the SM) • Super Symmetry (SUSY) may give hint on SM ‘free’ parameters • Bottom quark physics s( ) = 500 mb  51012 per year @ Lstart=1033  CP-violation, rare decays • Top: s( ) = 1 nb  108 per year @ Lmax=1034 cm-2 s-1 precision measurements of couplings, rare decays • W’, Z’, compositeness, ... Research & Education Program, Bob van Eijk

  4. The CERN accelerator infrastructure Research & Education Program, Bob van Eijk

  5. ATLASA ToroidaL ApparatuS • General purpose detector • lepton,  and hadron energy/momentum measurement • , electron, m,  and hadron identification • transverse missing energy measurement (, SUSY particles, …) • Requires: • excellent charged particle tracking (central tracker: s(pT)/pT = 30 % @ 500 GeV, |h|<2; m-system: s(pT)/pT = 11% @ 1 TeV) • excellent electromagnetic calorimetry (s(E)/E = 10% /E  0.7 %) • good hadronic energy measurement (s(E)/E = 50% /E  3 %, |h|<3), s(E)/E = 100%/E  3 %, 3<|h|<5) • redundancy: excellent alignment between sub-detectors Research & Education Program, Bob van Eijk

  6. This is a placeholder for the big ATLAS transparency from the ATLAS poster page Research & Education Program, Bob van Eijk

  7.  - tracking system design and construction of 96 central ‘outer chambers’ data acquisition and event trigger design and construction of data rooting architecture (140 million channels producing ~ 120 GByte/s) develop algorithms to reduce the first level trigger rate (100 kHz  ~ 10 kHz) event simulation and event reconstruction software engineering; Object Orientation (OO) central tracking system forward silicon disk design and construction design and construction of pixel detector modules responsibilities Research & Education Program, Bob van Eijk

  8. 2T solenoidal B-field 30<R<60 [cm] 60<R<120 [cm] 4<R<16 [cm] Cylindrical volume: 8m3 (2.2m, L=7m) Research & Education Program, Bob van Eijk

  9. 14 kW total heat load 140 million channels 2.3 m2 active silicon Research & Education Program, Bob van Eijk

  10. L=1033 cm-2 s-1 L=5x1033 cm-2 s-1 (mH = 400 GeV) Research & Education Program, Bob van Eijk

  11. Other interests... • High radiation levels inside ATLAS • silicon detectors at small radius do not survive… • search for alternative sensor: diamond • Beam telescope • R&D tool for strip and pixel detector development • Fast microtrack imaging • Training & Mobility of young Researchers (TMR) • collaboration with industries • Physics simulations • QCD calculations: top physics • SUSY modeling Research & Education Program, Bob van Eijk

  12. SCT Radiation Fluence of charged hadrons per cm2/year Fluence of 1 MeV equivalent neutrons per cm2/year Radiation dose (10 yrs LHC-equiv.) 0.8 - 1.3 x 1014 n/cm2 40 - 100 kGray (lethal dose = 1 Gy) Research & Education Program, Bob van Eijk

  13. SCT Modules (Barrel) Research & Education Program, Bob van Eijk

  14. SCTReadout/Electronics • binary front end • noise < 1500 e  noise occupancy < 5x10-4 • e = 99% • radiation hard to 2x1014 n/cm2, 10 Mrad • pipelined (128 long) • optical data transmission and clock/control • LED/PIN (820 nm) • radiation-hard multi-mode fibre (2 out, 1 in) • off-detector ROD and ROB • redundant data paths and f/e chip bypassing • Dtmin(L1) = 2 bunch crossings Research & Education Program, Bob van Eijk

  15. SCTSignal to Noise • n-side strips (simulation) • Cstrip = 1.5 pF/cm @ 0 p/cm2 • Cstrip = 1.2 pF/cm @ type inversion Research & Education Program, Bob van Eijk

  16. SCT-Mechanics(Forward) • 0-CTE, CFRP-support structures (space frame, disks) • space frame carries disks, long services and cooling • de-coupling of space-frame from disk (kin. mount) • disk carries module, local services and cooling • de-coupling of modules from disk (kin. mount) Research & Education Program, Bob van Eijk

  17. Disk layout: front view view Research & Education Program, Bob van Eijk

  18. view Disk Layout: back view Research & Education Program, Bob van Eijk

  19. # tracksavg 250 300 New Physics New Hardware ( why cool a Si-tracker ? ) Ptot = 25 kW #chan. = 6.2*106 Atotal = 60 m2 Lmax=1034 cm-2 s-1 rsi = 70 Wm-2 rel = 350 Wm-2 (3.4 mW/chan.) Ldt = 105 pb-1 Tsi = -7 C Dtbunch= 25 ns Lmax = 7 m max = 1.2 m Astrip = 9 mm2 Bmax = 2 T Pitch = 75 mm Research & Education Program, Bob van Eijk

  20. Research & Education Program, Bob van Eijk

  21. SCT(principle of module cooling connection) FE-chips quartzfan-ins heat spreader silicon detectors BeO hybrid PG-connections blocks disk large flow ectronics cooling channel  4W small flow detector cooling channel  1 W Z PG = Pyrolythic Graphite ltherm 300 -700 W / m K R Research & Education Program, Bob van Eijk

  22. H gg Research & Education Program, Bob van Eijk

  23. Research & Education Program, Bob van Eijk

  24. CP-Violation Research & Education Program, Bob van Eijk

More Related