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7/10/2004Erika Garutti1 The FLC Group (Future Linear Collider) oder ( Forschung an Lepton Collidern) Erika Garutti.

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Presentation on theme: "7/10/2004Erika Garutti1 The FLC Group (Future Linear Collider) oder ( Forschung an Lepton Collidern) Erika Garutti."— Presentation transcript:

1 7/10/2004Erika Garutti1 The FLC Group (Future Linear Collider) oder ( Forschung an Lepton Collidern) Erika Garutti

2 7/10/2004Erika Garutti2 Hardware  development/construction and test of advanced high tech. detectors Software  development of analysis programs and detector simulations Analysis  analysis of experimental data What does a physicist do the whole day long?

3 7/10/2004Erika Garutti3 Hardware  development/construction and test of advanced high tech. detectors Software  development of analysis programs and detector simulations Analysis  analysis of experimental data What does a physicist do the whole day long? need to understand simulation and hardware need to understand the physics to address need to understand the detector to simulate

4 7/10/2004Erika Garutti4 Hardware Build a detector for the ILC : the facility for the physics of the next 50 years max. Energy 500 – 800 GeV superconductive cavities High Luminosity 33 km long The ILC will be COLD!!!

5 7/10/2004Erika Garutti5 The TESLA detector

6 7/10/2004Erika Garutti6 Hardware New Physics implies:  New requirements  New technology  New materials Tracking: Time Projection Chamber (TPC) Calorimetry: Hadronic Calorimeter (HCAL) TPC ECAL HCAL

7 7/10/2004Erika Garutti7 Time Projection Chamber Gas Electron Multiplier read out - large volume: 3.5m diameter - simpler mechanics compared to wire chamber - distance between holes ~ resolution (100  m) - easy 3D track reconstruction - low cost

8 7/10/2004Erika Garutti8 Time Projection Chamber -built and DESY -Next steps: resolution and tracking studies in 5T magnetic field with e- beam with laser system TPC DESY

9 7/10/2004Erika Garutti9 Hadronic Calorimeter First prototype already in DESY - high granularity: small tile size multiple layers -high number of channels -need of small and cheap photo-detectors for independent fiber read out new technology development

10 7/10/2004Erika Garutti10 Technology to the limit 1 mm 2 photo-detectors/1024 pixels Single photon signal High granularity  small tiles channels read out for TESLA Pixels of the SiPM SiPM Silicon PhotoMultiplier (SiPM) MEPhI&PULSAR

11 7/10/2004Erika Garutti11 Software - Development of tracking software for TPC  detector simulation - Development of energy reconstruction software for HCAL  detector simulation - MC simulation of ILC detector:  geometry  detectors property  detector studies

12 7/10/2004Erika Garutti12 If there is a Higgs: the main production mechanisms are: High energy  WW fusion Low energy  Higgs-strahlung In the channel: ZH → ZWW → 4jets ℓ ν Higgs physics at the ILC  Understanding of mass generation  Higgs couplings to bosons and fermions

13 7/10/2004Erika Garutti13 H Z e + e - Z * Higgs main production mechanism at the ILC: Higgs-strahlung process ZH  X ZH qqbb ZH WW qq

14 7/10/2004Erika Garutti14 After the Higgs discovery (LHC?), the ILC will study: Cross section Quantum numbers Couplings CP violating conrib. to SM  M=M ZH +i  M ZA H  WW  bb  BG: HZ  bb  g Hbb vs g HWW

15 7/10/2004Erika Garutti15 The Higgs potential ee  ZHH  6 jets Is the Higgs the Higgs? Check  = M 2 H /2v 2 few tens of events reconstruct observable from 3 dijet masses  with LEP-like detector significance < 3 

16 7/10/2004Erika Garutti16 WW/ZZ separation Dilution factor vs cut: integrated luminosity equivalent No Higgs scenario: WW scattering violates unitarity at ~1.2TeV, or new forces show up access EWSB mechanism from WW scattering analyze ee  WW and ee  ZZ channels need to separate ZZ background no kinematic fit possible due to the neutrinos  We need a high resolution detector (a factor 2 better than LEP) OR we pay with luminosity (~40% more needed) ~(s/M W 2 ) 2 TESLA LEP

17 7/10/2004Erika Garutti17 Challenge: separate W and Z in their hadronic decay mode Dijet masses in WW, ZZ events (no kinematic fit possible):  40% more lumi is required for same resolution if  =60% Jet energy resolution LEP-like detector LC design goal

18 7/10/2004Erika Garutti18 Super Symmetry (SUSY) Fundamental symmetry between Fermions and Bosons Doubles the number of existing particles Symmetry breaking  no super-symmetric particle observed by now

19 7/10/2004Erika Garutti19 Start from the past to understand the future The OPAL experiment at LEP (CERN)  Precision measurement of Z 0 / W  Higgs search  SUSY, search for new physics Topics covered at FLC: - heavy Quarks: backward-forward asymmetry b-fragmentation - Triple-gauge-boson coupling - Higgs search: double-charge Higgs bosons production - SUSY search: heavy stable charge particles - Technicolor search

20 7/10/2004Erika Garutti20 Start from the past to understand the future The H1 experiment at DESY  Understand QCD and the proton structure Topics covered at FLC: - heavy Quarks production: b-fragmentation

21 7/10/2004Erika Garutti21 : a large & international group Group leader Prof. Dr. Rolf-Dieter Heuer (Uni HH) Dr. Ties Behnke (DESY) 8 wissenschaftliche Mitarbeiter (promoviert) 1 Hochschulassistent: Klaus Desch 1 DESY-Wissenschaftler: Felix Sefkow 8 DESY-Fellows: Steve Aplin, Karsten Buesser, E.G., Markus Hamann, Thorsten Kuhl, Roman Poeschl, Alexei Raspereza, Peter Wienemann 1 Gastwissenschaftler: Vasiliy Morgunov 10 Doktoranden Philip Bechtle, Filip Franco-Sollova, Marius Groll, Andreas Imhof, Tatsiana Klimkovich, Thomas Krämer, Thorsten Lux, Niels Meyer, Jorgen Samson, Blanka Sobloher 4 Diplomanden Markus Ball, Matthias Enno Janssen, Hendrik Meyer, Oliver Wendt

22 7/10/2004Erika Garutti22 ?!?! To know more about what YOU could FLC:  Contact: Klaus Desch, Ties Behnke, Rolf Heuer, Felix Sefkow  Surf: www-flc.desy.de  in DESY-Telephone book (www.desy.de)  Pass by: Building 1d There is a lot to be done for the physics of the future !!!


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