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A High Eta Forward Muon Trigger & Tracking detector for CMS

A High Eta Forward Muon Trigger & Tracking detector for CMS. Archana Sharma for

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A High Eta Forward Muon Trigger & Tracking detector for CMS

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  1. A High Eta Forward Muon Trigger & Tracking detector for CMS Archana Sharma for DuccioAbbaneo, Stephane Bally, Hans Postema, Antonio Conde Garcia, Jean Paul Chatelain, Gerard Faber, LeszekRopelewski, Serge Duarte Pinto, Marco Villa, Gabriel Croci, MatteoAlfonsi, Miranda Van Stenis, Sunil Kumar, Krishna P, Archana Sharma CERN Geneva Switzerland Stefano Bianco, Stefano Colafranceschi, Luigi Benussi, Franco Fabbri, Davide Piccolo, Giovanna Saviano LNF Frascati, Italy Nicola Turini, Eraldo Oliveri, Guido Magazzu Universita' Degli Studi di Siena INFN, Sezione di Pisa, ItalyAndreyMarinov, Michael Tytgat, Nicolas Zaganidis Gent University, Gent, Belgium Marcus Hohlmann and Kondo Gnanve Dept. of Physics and Space Sciences Florida Institute of Technology Melbourne, FL 32901  USA Yong Ban, HaiyunTeng, JingxinCai Peking University Beijing China Archana.Sharma@cern.ch 12th Topical Seminar on Innovative Particle and Radiation Detectors (IPRD10) 7 - 10 June 2010   Siena, Italy

  2. CONSTRUCTION OF LARGE PROTOTYPE

  3. Velocity field PROBLEMS.. Field is asymmetric… Reducing inlets diameters (1mm) the velocity field is more uniform but slower in the sector 3 and 4

  4. CMS Prototype GEM - Stack

  5. CMS Prototype GEM - Stack

  6. CMS Prototype GEM - Test BoxLarge Drift Electrode Sample under test Jean-Paul Chatelain

  7. Ongoing Drift Electrode Tests

  8. All I/V scans

  9. Honeycomb GEM studies without the honeycomb between drift and first gem

  10. Analysis of GEM spectrum ‘X displacement’ counts <adc channel> mm

  11. Moving the GEM (under x rays) along x,y direction with 0,25mm steps

  12. CMS single mask GEM1 Marco Villa

  13. Single GEM Electrodes TOP Top – Left Bottom - Right GEM 1 GEM 2 GEM 3 BOTTOM

  14. …and cross section pictures (1) TOP Sample 1 Sample 2 BOTTOM

  15. …and cross section pictures (2) TOP Sample 3 Sample 4 BOTTOM

  16. Preparing the experimental setup Drift • GEM active area: 10 x 10 cm2 • Gas mixture: Ar/CO2 70/30 • Gas flow: ~ 5 l/h • Water content: ~ 100 ppm H2O • Radiation source: Cu X–ray tube 3.05 mm GEM1 2.15 mm Anode

  17. Taking spectra • Ed = 2 kV/cm • Ei = 3 kV/cm • DV GEM = 480 V • Rate ~ 32 Hz/mm2 • Energy resolution @ 8.04 keV ~ 19.6 % FWHM/peak

  18. Measuring the gain curve • Ed = 2 kV/cm • Ei = 3 kV/cm • Rate ~ 180 kHz/mm2 • Spark voltage ~ 530 V • Max gain ~ 1080

  19. 42cm x 990 cm

  20. Serge FERRY-4/06/2010 1 Base material 50 µm polyimide foil copperclad LGEM PROCESS by single maskmethod Photoresistlamination, masking, exposure, development 2 3 Chemicaletching of copper Top 4 Polyimideetching in 2 steps Electrochemicaletching of copper Bot + over-etched 5 6 Polyimideetching to transformholegeometry Photoresistlamination, masking, exposure, development to defineelectrodes 7 Chemicaletching of copper Top and Bot, Cleaning and electrical test 8 -The LGEM are actually in step 5.

  21. CMS High Eta Upgrade Studies Test Beam Plan 2010 Chambers for June: (SEE Stefano’s talk tomorrow) CMS Triple GEM prototype 10 x 10 cm Honeycomb Triple GEM Single Mask GEM Measure Efficiency for perpendicular tracks Measure Efficiency for inclined tracks with tracking Optimization of time resolution Tests with Front End electronics for mips Space and time resolution October Gas Studies Magnetic Field Operation Large Prototype test

  22. The setup • Tracking: Standard GEMs chambers: T1, T2, T3 • Data-taking: GEMs chambers have been  tested: • “Timing chamber” • “Honeycomb chamber ” • “Single mask chamber” • Gas mixtures used:1. Ar(70%) + CO2(30%) 2. Ar(45%) + CO2(15%) + CF4(40%) [LHCb Mixture] PRELIMINARY See Stefano’s talk for details

  23. Beam Test June 2010 –Preliminary Online Results Summary

  24. Summary Results for Ar-CO2 70-30Efficiency scan Eff./Gain PRELIMINARY Timing GEM

  25. Summary Results for Ar-CO2 70-30RMS of the arriving time vs Gain PRELIMINARY Timing GEM

  26. Summary Results for Ar-CO2-CF4 15-45-40 and gaps 3/2/2/2mmEfficiency scan vs Gain PRELIMINARY Timing GEM

  27. Summary for the last Eff scan with new spacers 3/1/2/1mm and LHCb gas PRELIMINARY Timing GEM

  28. Honeycomb GEM Data analysis continues PRELIMINARY

  29. STATUS AND OUTLOOK 1. Prototype (standard, honeycomb, single mask) tests in lab, beam - continue 2. Beam tests and analysis 2010 – continue 3. Detail mechanical design for mock up and proto ~ final 4. Definition of readout, electronics and its mechanical support - ongoing Services and routing HV, Gas, LV, cooling - ongoing 5. Mockup realization of detector Done, some details missing 6. Production of prototype – expected to be completed by end of June Tests of prototype Feasibility / simulation studies of integration with CMS trigger and tracking – to be done (not yet started)

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