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Particle Physics Experiment

Particle Physics Experiment. 9 Academics + 1 retired + 1 visiting Professor Includes Doyle (80% GridPP/Senior Fellow), Parkes (PPARC PD Fellow), Rahman (50% Solid State), Soler (joint appointment with CCLRC) 20 Research Staff

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Particle Physics Experiment

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  1. Particle Physics Experiment • 9 Academics + 1 retired + 1 visiting Professor • Includes Doyle (80% GridPP/Senior Fellow), Parkes (PPARC PD Fellow), Rahman (50% Solid State), Soler (joint appointment with CCLRC) • 20 Research Staff • 15 PPARC (inc 4 grid) + 5 (Scottish Enterprise, EPSRC, SHEFC/JREI, EU) • 17 Ph D students • 6 PPARC quota + 4 PPARC Case/E-science + 3 University + 4 other •  PPARC CASE bidding is wonderful opportunity. Keep it! • 6 Support: • 5 PPARC Technicians, 0.5 University Secretaries, 0.5 PPARC Secretary (GridPP) • Long-term programme • Core is the academics plus long-term PPARC RAs • Hardware (RA3 + 2 RA2s) Software (3 RA2s)

  2. Particle Physics Experiment • Experiments producing physics results (run until 2006) • ZEUS, CDF • Preparations for the LHC (run from 2007) • ATLAS, LHCb • e-science: the Grid • ScotGRID, CDF grid, ATLAS, LHCb • Detector development • Radiation hard detectors for PP; spin-out applications • Long term future • HARP, MARS, linear collider • Finishing: ALEPH, DELPHI, NOMAD

  3. PPE: new funding and support (Jan 2000/Dec 2001) • University • Facilities (clean room, computer room, 10 new offices, more lab space): value added to PPE research £492K • Operating budget (2 years) £90K • PPARC • Rolling grant (4 year spend limit quoted) £2728K • 16 other awards £1396K • plus share in value of CDF-JIF • Other funders • 19 awards £1450K • Total (9 P.I.’s) £6156K • excluded: RAL line, quota students, University PGs, staff salaries, existing buildings, CERN sub

  4. ZEUS: our main science engine • FTEs (1.4 acad [4 people], 2 RA, 3 PG). Glasgow physics: • Prompt g in photoproduction. 1st measurements at HERA. led by us • Prompt g + jets in photoproduction  intrinsic kT. All Glasgow • Angular and current-target correlations in DIS • Azimuthal asymmetries • Dijet cross sections using real and virtual g (unique Q2 region) • High dijet masses in photoproduction g structure • Analyses in progress • Single top production • g + jet in DIS • Virtual photon structure via dijet production • Scaling violations in gp interactions • DIS event shapes as • Jet substructure as • Charged current events at high ET W-mass and QCD tests • Papers on MLLA phenomenology (2 with Bristol) + review

  5. ZEUS results gp  g + jet study pT balance: QCD event shape study: as and a0 (non-perturb.) Quark intrinsic kT in proton

  6. ZEUS: upgrade (2002-6) • Benefits: • More Lumi, heavy flavours, tracking acceptance, polarisation • Glasgow aims: • prompt photon studies. Need higher statistics: • to probe QCD effects. • to study diffractive events • Prompt photons with charm - using Microvertex detector • Jets and event shape studies: • higher Q2 to compare to MLLA, • charm azimuthal asymmetries in boson-gluon fusion using charm tag • jet cross sections to higher Q2 and ET • More sensitivity in top search (FCNC limits, already much better than LEP, TeVatron) • Work on background reduction

  7. CDF: our new science engine • FTEs (1.2 acad [2 people], 1.6 RA, 5 PG) • [PG funding from Fermilab and Argonne] • Hardware and analysis tools: • Big involvement in SVX development, testing, calibration • We lead data-bases (calibrations etc), CDF Grid activity • Accelerator development (antiproton collection, backgrounds {PG student}, technicians) • CDF-JIF analysis server in Glasgow • Physics has started: • search for Bs J/y h • paper on double diffraction dissociation • Main thrust: physics of b-quarks.

  8. CDF: b-physics • Production mechanisms poorly understood • need to establish QCD mechanisms • pre-requisite for Higgs search • needed for accurate CKM measurements (sin 2b +..) • Build on J/y h study and b-jet tagging (ex-ALEPH): • Bs lifetime using Bs J/y f • Bd mixing • Lb lifetime • Bs lifetime using semileptonic decays • Bid for new RA • use b-tagging to study top physics

  9. CDF Hardware and analysis Run 1: B+ J/yK+ Run 2: J/y decay length Vertex detector

  10. ATLAS: our main future • FTEs: 2.3 academics [6 people], 4 RA, 1 PG • Smith is chairman of ATLAS collaboration board • Forward Semiconductor Tracker (SCT) • Commission test system for modules • Systems test lab at CERN • Prototype thermal shield • Disk mock up. Services • Module irradiations and subsequent tests • ‘3D’ technology - continues as R&D project • Preparations for physics • WH signal/background studies • Interface to EU data-grid management

  11. ATLAS- Forward semiconductor tracker tests System test at CERN Laser-scanning tests in Glasgow (above) Forward SCT module (2 layers) showing services (left)

  12. ATLAS: low-mass Higgs via WH, H b,bbar Kinematic cuts to suppress WZ & continuum background with high efficiency for WH.

  13. ATLAS plans • Forward SCT modules • 300 modules to be bonded, tested QA’d in Glasgow • Services layout work • Irradiation and tests • System test facility at CERN • Assembly, testing, commissioning, integration (part of UK team) • Physics preparations • Interface to grid • Data challenges. Use of ScotGRID facility

  14. LHCb: our new future • FTEs building up: • 2 new academics (Soler, Parkes), 1 RA, 1 PG rising to 2 • LHCb RICH project (Ring Imaging CHerenkov) • Photon detector technology  pixel HPD as baseline • ASIC design for ALICE/LHCb (with CERN) • RICH2 Mechanical design and assembly project (CCLRC based) • Development lab in Glasgow • LHCb VELO project (VErtex LOcator) • n-in-n technology  EU funded development • Irradiated detector tests to very high fluences

  15. LHCb - RICH and VELO R and f layers Single photoelectron spectra visible Flux > 3.1014 n cm-2

  16. LHCb: plans • RICH • Full scale test facility in Glasgow (250 HPDs = 250k pixels) • Laser alignment • Gas monitoring • Simulation • Mechanics • VELO (following Parkes’s transfer from Liverpool) • Software coordination, algorithms • Sensor R&D • Test beam analysis, irradiations • ScotGRID • Monte Carlo Facility and studies (experience on MAPs) • Bid for RA: Parkes’s transfer brings responsibilities

  17. Developments for future detectors and facilities • Detector development + involvement in future linear collider (ECFA study, MAPS) & HARP • 4 academics, 6 RA, 5 PG. Lots of external funding • Radiation-hard detectors: • Lazarus effect • 3D-technology - €2.2M project • Charge carrier transport studies (builds on IMPACT project) • GaAs/AlGaAs detectors needing no bias • SiC as detector material • Pixel detector testing (with RAL, LAD1 and Dash-E projects) • MEDIPIX2 collaboration - bump bonding • Test our prototype ion-beam profiler • Electrode arrays for retinal imaging

  18. 3D radiation-hard detectors for PPE Collection: distance /10, time /10, volts /100 • Contacts: • Schottky-Schottky • n-Schottky • p-n junction Dry Etching Laser Drilling Photoelectro- chemical etching Si & GaAs a & X-rays

  19. New detector materials for high radiation environments a particle pulse height spectra from pad diodes as bias voltage is varied GaN SiC

  20. Detector R&D plans • CERN R&D collaborations • RD39,48, INTAS (Glasgow coordinates): ongoing development • EU-projects • 3D RID (Glasgow coordinates) • Closely-spaced matrix of electrodes through the material • CANDID • Pixel detector for angiography • Technology transfer • MEDIPIX2  Philips (Director for strategy is Honorary Professor here) • New materials • SiC, GaN (wide gap) • Retinal imaging microarrays (with SCPP Santa Cruz + others) • Ion beam profiler (Scottish Enterprise)

  21. Future accelerators • e+e- linear collider: • MAPS (Monolithic Active Pixel Sensors) (PPARC grant) • approved R&D project at DESY. Intelligent alternative to CCDs • partners in PRIMA bid (Basic Technology - resurrect??) • Fermilab accelerator know-how (MARS)  machine/detector interface • Neutrino Factory • HARP (study muon neutrino source) • NOMAD know-how • alignment and tracking (like LHCb methods) • Compare to MARS simulations

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