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ATLAS@LHC

Exp High Energy Physics in Lund fusion in 2003 between Particle Physics and the High Energy Heavy Ion group Div head: Paula Eerola. ALICE@LHC. Electronics. Overview of div. Human interations. p+p. e + e. Pb+Pb. e + p. M Curie EST @Lund. PHENIX@RHIC. H1@HERA. TPC@ILC. ATLAS@LHC.

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ATLAS@LHC

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  1. Exp High Energy Physics in Lundfusion in 2003 between Particle Physics and the High Energy Heavy Ion groupDiv head: Paula Eerola

  2. ALICE@LHC Electronics Overview of div. Human interations p+p e + e Pb+Pb e + p M Curie EST @Lund PHENIX@RHIC H1@HERA TPC@ILC ATLAS@LHC SUSY, Higgs,... CP-violation Detector developm Problem Based Learning Proton structure,... Quark-gluon plasma,... Grid

  3. People and projects • ATLAS (pp @LHC) • P. Eerola, V. Hedberg, G. Jarlskog (emeritus), O. Smirnova, T. Åkesson. • PhD students N.Boelert, J.Groth-Jensen, J. Weina • Guests: S.Seidel, E.Gazis • GRID (distributed data handling) • P. Eerola, B. Kónya, O. Smirnova, J. Jönemo, PhD student: P. Gros (50%) • ALICE (Heavy ions @LHC) • P. Christiansen (fo.ass), H.-Å. Gustafsson, A. Oskarsson, I. Otterlund (emeritus), E. Stenlund PhD students: P. Gros (50%), A. Dobrin • PHENIX (Heavy Ions @ RHIC) • P. Christiansen, H.-Å. Gustafsson, A. Oskarsson, E. Stenlund. • PhD students: E. Haslum, S. Rosendahl • H1 (ep @ HERA) • L. Jönsson. • PhD students: M. Hansson, S. Osman. • ILC-TPC (detector development) • L. Jönsson, V. Hedberg, A. Oskarsson, E.Stenlund. Engineers: B.Lundberg,U.Mjörnmark, L. Österman

  4. The ATLAS experiment ATLAS Lund Status by Vincent Hedberg tomorrow

  5. HEP EST, teachers view --7EU+1LU students started october 2006 --4 exp, 3+1 theory --7 countries: Belgium,China 2, Denmark, England, Italy, Romania, Sweden --40p courses, finish in november --all courses use PBL methodology Exp Methods in HEP, Statistics and data analysis, QFT, numerical methods, particle phenomenology, SM and extension --a lot of work --teachers think PBL was fun --8 PhD students will visit for 6 months --Alex Dobrin gives students view tomorrow

  6. PHENIX at RHIC • Au+Au at 100 + 100 GeV per nucleon • Polarised pp at 100 + 100 GeV (250+250 ) • Taking data since 2001

  7. Total Data Volumes RHIC • Plot courtesy of Tom Throwe (RCF) 3 months exp

  8. Publication Summary RHIC • Since 2001: • 44 PRL’s • 15 Phys. Rev. C • 4 Phys. Rev. D • 2 Phys. Lett. B • 1 Nucl. Phys. A (White Paper) • ~ 3500 citations • Most-cited paper from RHIC: • “Suppression of hadrons with large transverse momentum in central Au+Au collisions at √sNN= 130 GeV ”,K. Adcox et al. , Phys.Rev.Lett. 88:022301 (2002), nucl-ex/0109003 • 12 other papers with > 100 citations 5 PHENIX PhDs from Lund David Silvermyr, staff pos @ ORNL, PHENIX/ALICE Pål Nilsson, staff pos @ Texas U., ATLAS Henric Tydesjö, CERN Fellow, ALICE Still in business Up to 2006

  9. RHIC, Jet quenching

  10. ALICE at LHCPb+Pb 5500GeV per NN coll

  11. 5000 cards made in Lund TPC before placed in magnet

  12. First Cosmic Ray Data OROC IROC Side view 3-dimensional view of a shower induced by cosmic rays

  13. Startup plan(quite tentative) December 07: 1 month Cosmic running January 08: further Cosmics <1 month Feb-March 08: Install remaining detectors 1May 08: Close magnet doors, wait for pp collisions full energy. Alice best for low Pt data complementary to ATLAS/CMS End of 08: Possibly short PbPb, But may depend on pp status April 09: long pp Nov-dec 09: month PbPb

  14. H1 at HERA • H1 dismantled this summer. 15 years of data • Albert Knutsson, PhD march 07. Now postdoc at DESY • Forward jet production in deep inelastic scattering at HERA • Conclusions: First evidence for new parton dynamics, that can not be described by the resolved photon model. • Magnus Hansson, PhD defence sept 28-07. • Azimuthal correlations in dijet events from deep inelastic positron-proton scattering at HERA • Conclusions: Measurement directly sensitive to the amount of transverse momentum emitted in the parton cascade. Deviations to predictions by NLO calculations and QCD models are observed. A fit of the unintegrated gluon density has been performed, which for the first time gives a constraint of the intrinsic transverse momentum of the gluon propagator. • Data analysis continues by Sakar Osman. PhD mid next year • A study of minijets in deep inelastic electron proton scattering at HERA

  15. Grid activities in Lund Projects: EU KnowARC: develops new Grid middleware; Lund provides the Project Leader (B.Kónya) Design and early working prototypes are ready NDGF: NOS-N funded, Nordic Grid Infrastructure, Tier1 for LHC computing; Lund provides the CERN Coordinator (O.Smirnova) Tier1 is set up and running, participates in ALICE and ATLAS production and tests NGIn: Nordunet3 project; focus on grid education and applications 4 PhD students in Nordic countries (P.Gros in Lund) NorduGrid: a collaboration that initiated the projects above People: Paula Eerola – NorduGrid, KnowARC, NDGF Philippe Gros – Ph.D. student (NGIn – ALICE applications) Johan Jönemo – KnowARC Balázs Kónya – NorduGrid, KnowARC Ulf Mjörnmark – NorduGrid, KnowARC Оxana Smirnova – NDGF, NorduGrid, KnowARC Short-term visitors, master students 9/18/2014 16

  16. Detector development for ILC (international linear collider) Joint effort of Lund HEP division L. Jönsson, V. Hedberg, B. Lundberg, U.Mjörnmark, A.Oskarsson, E. Stenlund, L. Österman EUDET, FP6 III project to position Europé in detector for ILC + VR counterfinancing EUDET partners: CERN, DESY, NIKHEF, CEA, CNRS,CSIC,MPI,INFN + universities EUDET: test beamline at DESY high resolution tracking High resolution calorimetry

  17. 2012 start constr 2019 end constr 2005 2006 2007 2008 2009 2010 ILC Timeline Global Design Effort Project Baseline configuration Reference Design Technical Design ILC R&D Program Expression of Interest to Host International Mgmt

  18. 500 GeV CM Baseline Configuration - Schematic • 1 TeV CM ~30km, 31.5MV/m 2820 bunches, spaced 300ns 5 times per second Luminosity 2 1034

  19. The detector. Order of magnitude better resolution. TPC with GEM readout chambers 1*6mm pads, 5M channels

  20. Lund/CERN readout electronics and DAQ task Within half a year: -10000 channel system based on ALICE readout electronics -new amplifier (Nov 2007) programmable: polarity, gain, shaping -ALTRO digitizer chip with 40MHz sampling Longer term: Full integration of amplifier and digitizer for final TPC

  21. Backup slides

  22. Digital Circuit Need new preamp-shaper chip, Programmable pol. Gain, shaping time 190nm process ALICE front end card FEC (Front End Card) - 128 CHANNELS (CLOSE TO THE READOUT PLANE) DETECTOR Power consumption: < 40 mW / channel L1: 6.5ms 1 KHz 8 CHIPS x 16 CH / CHIP 8 CHIPS x 16 CH / CHIP drift region 88ms L2: < 100 ms 200 Hz ALTRO gating grid PASA ADC RAM anode wire DDL (3200 CH / DDL) CUSTOM IC (CMOS 0.35mm) pad plane 570132 PADS CUSTOM IC (CMOS 0.25mm ) • GAIN EQUALIZ. • LINEARIZATION • BASELINE CORR. • TAIL CANCELL. • ZERO SUPPR. CSA SEMI-GAUSS. SHAPER 1 MIP = 4.8 fC S/N = 30 : 1 DYNAMIC = 30 MIP 10 BIT < 12 MHz MULTI-EVENT MEMORY GAIN = 12 mV / fC FWHM = 190 ns FEE FOR THE NA49 AND STAR TPCs

  23. Experience from ALICE, 500 000 channel system

  24. Higgs - The Standard Model Higgs - SUSY Higgs Non-SUSY extensions of SM SUSY - Minimal Supersymmetric Standard Model (MSSM) - The Minimal Supergravity model (mSUGRA) - Gauge-Mediated SUSY Breaking (GSMB) - Anomaly-Mediated SUSY Breaking (AMSB) Alternative theories - Extra Dimensions - Strong electroweak symmetry breaking - Compositness Precision measurements - Electroweak Gauge bosons - Extended Gauge theories - Top quark physics - Quantum Chromodynamics The physics agenda for the ILC  J.A. Aguilar-Saavedra et al., hep- ph/0106315  T. Abe et al., hep-ex/0106055  K. Abe et al., hep-ph/0109166  G. Weiglein et al., hep-ph/0410364 Very much the same as LHC Why ILC? Complementarity to LHC • Clean entrance channel • Matched by precision measurements

  25. 5.6 m TPC ALICE GAS VOLUME 88 m3 DRIFT GAS 90% Ne - 10%CO2 Co2 insulation E E E E Drift volume E 88ms 400 V / cm 1.6 P b P NE / CO2 88ms 510 cm E Central electrode Readout plane segmentation 18 trapezoidal sectors each covering 20 degrees in azimuth End plate 5 m

  26. The Baseline Machine (500GeV) ~30 km ML ~11.2km (G = 31.5MV/m) 20mr RTML ~1.6km BDS 5km 2mr e+ undulator @ 150 GeV (~1.2km) R = 955m E = 5 GeV x2 not to scale

  27. The ILC Accelerator • 2nd generation electron-positron Linear Collider • Parameter specification • Ecms adjustable from 200 – 500 GeV • Luminosity ∫Ldt = 500 fb-1 in 4 years • Ability to scan between 200 and 500 GeV • Energy stability and precision below 0.1% • Electron polarization of at least 80% • Options for electron-electron and g-g collisions • The machine must be upgradeable to 1 TeV • Three big challenges: energy, luminosity, and cost

  28. Scope of the 500 GeV machine Main linacs length ~ 21 km, 16,000 RF cavities (total) RF power ~ 640 10-MW klystrons and modulators (total) Cryoplants ~ 11 plants, cooling power 24 kW (@4K) each Beam delivery length ~ 5 km, ~ 500 magnets (per IR) Damping ring circumference ~ 6.6 km, ~400 magnets each Beam power ~ 22 MW total Site power ~ 200 MW total Site footprint length ~ 47 km (for future upgrade > 1 TeV) Bunch profile at IP ~ 500 x 6 nm, 300 microns long

  29. Elements of the BCD • Parameter plane established • TESLA designed for 3.4e34 but had a very narrow operating range • ILC luminosity of 2e34 over a wide range of operating parameters • Bunch length between 500 and 150 um • Bunch charge between 2e10 and 1e10 • Number of bunches between ~1000 and ~6000 • Beam power between ~5 and 11 MW • Superconducting linac at 31.5 MV/m • Cavities qualified at 35 MV/m in vertical tests • Expect an average gradient of 31.5 MV/m to be achieved • Rf system must be able to support 35 MV/m cryomodules • This still requires extensive R&D on cavities and rf sources

  30. 5GeV Final ILC design? ~ 1 TeV 8-10 years away, somewhere

  31. GAS VOLUME 88 m3 DRIFT GAS 90% Ne - 10%CO2 400 V / cm E E E E 5.6 m 88ms NE / CO2 510 cm 500 000 readout channels fabricated, delivered and tested in Lund, now under comissioning in the ALICE magnet 5 m

  32. Commissioning – starting well before first beams arrive pre-alignment and pre-calibration with cosmic rays Commissioning with pp events – two stages. ~20k events – used for alignment first measurements: multiplicity, charges particle spectra ~70M events – used for calibration (TPC, SDD, TOF) strangeness production, identified particle spectra, particle correlation First pp runs ~few 109 events heavy-flavour production, high pT physics, comparison data ALICE merit, low PT Pilot heavy-ion run (2008) ~106 events – cover most of the soft physics programme Full-scale heavy-ion run (2009) ~107 events – first results on hard processes in heavy-ion collisions Alice expectations first runs

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