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Forward Physics at the LHC - A Project Review

Forward Physics at the LHC - A Project Review. Risto Orava Helsinki Institute of Physics and Department of Physical Sciences University of Helsinki. Physics Goals & Bench Mark Processes Forward Spectrometer at the LHC Project activities at CDF/Tevatron

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Forward Physics at the LHC - A Project Review

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  1. Forward Physics at the LHC - A Project Review Risto Orava Helsinki Institute of Physics and Department of Physical Sciences University of Helsinki • Physics Goals & Bench Mark Processes • Forward Spectrometer at the LHC • Project activities at CDF/Tevatron • The Helsinki Group: Resource basis, Plans • Impact: Education, R&D • Summary 0.1 R-ECFA Meeting in Helsinki R.Orava 26. September 2003

  2. Important part of the phase space is not covered by the baseline designs at LHC. Much of the large energy, small transverse energy particles are missed. Charge flow MH2 = Mmissing2 = (p1+p2-p1’-p2’)2 = Mbb2 information value low: - bulk of the particles created late in space-time -jet MSSM with large tanb => 10 x sSM! gap gap Energy flow H h information value high: - leading particles created early in space-time P1’ P2’ DMmissing = O(1 GeV) DMbb = O(10GeV) -jet In the forward region (|h > 5): few particles with large energies/ small transverse momenta. Missing Mass: accurate scan in pp  p + X + p using leading p’s 1.1 R-ECFA 26. September 2003 Risto Orava

  3. Upgrade scenarios and Forward detectors - CMS & TOTEM • Technical Proposal submitted in 1999 • Technical Design Report (TDR) to be completed by End 2003 • Designed to co-exist with CMS and to run with large, • intermediate and low b* (1500m & 18m & 0.5m) • Aims at: • Precision measurement of stot (Dstot ~ 1mb) • Elastic scattering down to -tmin ~ 10-3 • Diffractive scattering • Forward spectrometer: • T1 & T2 for inelastics (3 < |h| < 7) • New collaborators: ILK Dresden, Helsinki, • Brunel, Warsaw, Prague, INFN-Genova. 2.1 R-ECFA 26. September 2003 Risto Orava

  4. Experimental Apparatus at the LHC Inelastic Detector T1-T2 T1-T2 RP1 RP2 RP3 RP4 Roman Pots/Microstationsto measure elastic and diffractive protons TOTEM integrated with the machine Inelastic Detector TOTEM integrated with CMS in out Roman Pot/Microstation -concept 2.2

  5. New layout of T2 - CMS/TOTEM Working Group on Diffraction A Optimized Conical Vacuum Chamber Absorber Electromagnetic Calorimeter (Castor) 5.0<h<7.5 Silicon Pixel or GEM Tracker 5.0<h<7.5 A 2.3

  6. Diffraction Dissociation (High Luminosity) b* = 0.5 m RP4 (215 m) RP5 (300 m) RP6 (340 m) RP7 (420 m) acceptance x = Dp/p 2.4

  7. A novel detector for measuring the leading protons - the Microstation - is designed to comply with the LHC requirements. • A compact and light detector system • Integrated with the beam vacuum chamber • Geometry and materials compatible with the • machine requirements • mm accuracy in sensor movements • Si strip or pixel detector technology • Robust / reliable operation Microstation - initial design Development in cooperation with the LHC machine groups. 2.5

  8. Microstation: initial design Inch worm motor Emergency actuator 6cm Inner tube for rf fitting Space for cables and cooling link Detector Space for encoder Note: A secondary vacuum is an option. 2.10 Helsinki group

  9. Microstation: design with secondary vacuum μstation, Secondary Vacuum Implementation Detector Secondary vacuum Beam vacuum 2.11

  10. Research and Development:stations • Beam impedance, electromagnetic pick-up bench measurements, shielding. • Alignment, mechanical stability and reliability, emergency detector retraction from the beam. • Cooling and cryogenic system studies. • Bake-out tests, out-gassing and vacuum tests. • Study of radiation hardness of the critical components: • motors, • connectors and feed-throughs, • flexible connections at cryogenic temperatures in vacuum. • Detector integration, position encoders, rad hardness, r-o cables. Validation in collaboration with the LHC machine groups (as in the case of the Velo detector/LHC-b). New collaborators from Orsay & Saclay(1st meeting 29.-30.9.-03) 2.12 R-ECFA 26. September 2003 Risto Orava

  11. Microstation – impedance measurements The Helsinki Group rf damping in the end of the tube Measurements at the Pohjois-Savo Polytechnical Institute – Microelectronics Laboratory simulation tube signal input (1.9 mm Cu-wire) reference tube tube ends with N-connectors simulation tube steel springs 60mm damping arrangement 2.13

  12. APV25 Hybrid PitchAdapter Support Cooling Pipe Detector Spacer 4.11 A Silicon Detector Module/Totem 2.14

  13. Edgeless Si-Detectors • Normal strip or pad detector (with or without gr) scribed into or near active region gr = guard ring Active strips Scribe line S. Eränen, J. Kalliopuska & T. Schulman – test structures to be manufactured at VTT/Finland 2.15

  14. Proton Acceptance at 215, 308 and 420 m’s all stations together stations at 215 and 420m 100% Acceptance station at 215m alone 50% station at 420m alone 0% 200 400 600 800 1000 MM (GeV) Conclusions: Acceptance from 40 GeV on, stations at 308m & 420m give 50% acceptance for 130 GeV Higgs Helsinki Group/T. Mäki & K. Österberg 2.17

  15. Missing Mass Resolution at 215, 308 and 420m’s 3% DM/M 1% 100 300 500 700 4% DM/M 1% 60 100 140 180 M(GeV) Conclusions: Stations at 308-420 m alone yield 1% DM/M, All stations combined give 2% DM/M for mH = 120 GeV Helsinki Group/T. Mäki & K. Österbeg 2.18

  16. Project Activities: Tevatron CDF/Tevatron represents the only active – data producing – high energy physics experiment in Finland • An initial phase at Tevatron (CDF Upgrade): • invaluable training ground for students • hands-on preparation for a contribution to LHC • learn about the challenges of forward physics by using real data • provide Ph.D. students and young post-docs opportunity to gain visibility in the high-energy physics community • The first steps : • planned participation in design and construction of hybrids/fine • pitch cabels for thereadout of the silicon strip detectors (run • IIb) - Pohjois-Savo Polytechnic • trigger development for L2 - Pohjois-Savo Polytechnic • detector performance studies (tracking and b-tagging) • physics analyses (QCD, top quark studies, …) 3.1 R-ECFA 26. September 2003R.Orava

  17. Project Activities: Tevatron Prototype fine pitch cables of 64cm length for the innermost layer (L0) of the CDF silicon upgrade for RunIIb • First trial : convential PCB production technology (not adequate !!) • Second&thirdtrials : design/re-design on glass mask (Terapixel/Finland) and production of short cables using glass mask (Hpetch/Sweden) • significant improvements (especially with design changes adapted to process) (12 + 2)mm tracks tracks too wide/pads too wide • Next step : Full length cable produced with glass mask. design re-iterated 3.2 R-ECFA 26. September 2003R.Orava

  18. Project Activities: LHC LHC: gluon factory with a factor ~40 enhancement in gluon-gluon luminosity (compared to Tevatron)  forward physics offers clean environment for new physics, complementary to base line program • a wide range of physics and detector related aspects • intensive study on physics performance simulations continue • define the optimal layout of the detector locations / geometry • assess physics potential (together with phenomenology groups in Durham (Khoze) & Helsinki (Chaichian & Huitu) • R&D on the microstation concept to converge • design and construction of a fully functional prototype to validate the microstation concept (Spring 2004) • to be carried out in collaboration with: • CMS (A. DeRoeck) on Forward Spectrometer designs • TOTEM (K. Eggert) on Roman Pots/microstations, on Cryogenic • Si-detectors (V.Palmieri), on edgeless Si-detectors • (S. Parker, C. DaVia, VTT, Polytechnics) 3.3 R-ECFA 26. September 2003R.Orava

  19. The Helsinki Group - Composition Member Position Experience Task Funding(-03) Avati V. PhD student Totem beam simulation HIP2 Bergholm V.1 PhD student summer student simulaton/tests grad.school2 Cwetanski P. PhD student ATLAS TRT detector tests CERN tech.student Kalliopuska J.1 PhD student summer student Si-detector simul. HIP2 Kiiskinen A. post doc LHC R&D, Delphi simulation/tests HIP2 Kurvinen K. detector phys. LHC R&D, Delphi detector tests HIP Lauhakangas R. DAQ eng. LHC R&D, Delphi,... DAQ HIP Mäki T. PhD student summer student simulation/tests grad.school2 Noschis E. PhD student LHC R&D detector tests CERN tech.student Oljemark F.1 PhD student summer student beam tests HIP2 Orava R. prof. LHC R&D, Delphi,E605 project leader HIP & UH Palmieri V. post doc RD39, NA50... Si-detectors CERN project ass.2 Saarikko H. prof. Delphi, NA22, UA5 diffraction UH&HIP Tapprogge S. post doc Atlas, H1, NA45 performance HIP Österberg K. ass.prof. LHCb, Delphi detector syst UH&HIP EU-RTN post doc CDF/SVX physics analysis EU-RTN + technical trainees elec., software testing Polytechnics + student trainees high energy phys. MoE 1 Currently working on their MSc thesis 2 Foreseen source of funding - From 1984 on, the group has been responsible for the physics driven detector contributions, detector operation, data & physics analysis in DELPHI - and produced 20 PhD’s - The fwd physics project follows this tradition 3.4

  20. The Helsinki Group - Collaboration Institute/ Coordinator Responsibility Helsinki Institute of Physics Physics and detector simulation, (hip.fi) R. Orava integration&testing, project coordination Division of High Energy Physics, Physics and detector simulation, University of Helsinki project coordination (physics.helsinki.fi/~www_sefo/sefo.html) R. Orava Durham University Phenomenology of Forward Physics V. Khoze Iowa State University Simulation J. Lamsa Espoo-Vantaa Institute Software & firmware development of Technology (evitech.fi) T. Leinonen Pohjois-Savo Polytechnic Hybrid development/RF testing/ (pspt.fi) slow controls/tests A.Toppinen Rovaniemi Polytechnic Data base/GRID (ramk.fi) J. Leino VTT Technical Research Edgeless Si-detectors for microstation Center of Finland (vtt.fi) S. Eränen 3.5 R-ECFA 26. September 2003R.Orava

  21. HIP Resource Needs in 2003 - 2005 • Manpower (need vs. nowavailable by UH/HIP funding): • FNAL based 1 (0) post-doc (EU-RTN), 2 (0) Ph.D. students • CERN based 2 (1) post-docs, 2 (0) Ph.D. students • Helsinki based 1 (1) professor 50% at CERN, 1 (1) assistant professor, 1 (0) post-docs, 4 (1) PhD students, 3 (2) laboratory staff • Instrumentation (test set-ups, prototypes) • Travel funds • TOTEM collaboration fee, construction funds 3.6 R-ECFA 26. September 2003R.Orava

  22. Impact in Finland Enthusiasm for the physics potential ! • Forward physics project is small and compact, fully integrated to • the hep resource basis at home created through participation in • DELPHI • The High Energy Physics Laboratory • Training programs • Polytechnics • VTT • Forward physics project is well integrated to the international • efforts • ATLAS (Rijsenbeck et al.) - CMS (A. DeRoeck) - TOTEM (K.Eggert) • CERN R&D Project on radiation hard detectors • European Commission Research Training Network “Probe for • New Physics” (A. Savoy-Navarro) & “Strongnet” proposal • CDF is currently the only physics producing hep experiment in • Finland • training students and staff for the LHC • test ground for forward physics & spectrometer 4.1 R-ECFA 26. September 2003R.Orava

  23. CERN & International Networks Forward Physics Project: Tevatron & LHC Basic Research Education, Training Applied Research Technology Transfer HIP & University of Helsinki Polytechnics VTT & Industries

  24. Summary • Forward Physics project offers: • Frontline physics contributions CDF & LHC program (QCD, Top, Higgs, supersymmetry...) • Physics Problem - Simulation - Detector Development - Detector Construction - Physics Analysis  Fundamental Discoveries in Physics? • Ideal Training Ground for Students & Technical Trainees • Forward Physics projects needs: • PostDoc & PhD Positions for young & brilliant experimentalists; several excellent candidates • available • Long term & stable funding for detector R&D (DetLab!), • tests, construction & operation 5.1 R-ECFA 26. September 2003R.Orava

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