GEM Detectors for a CMS Muon Endcap Upgrade & Other Uses

by Marcus Hohlmann (Florida Institute of Technology (US))

Thursday 26 Jul 2012, 14:00 → 15:00 US/Central

Sunrise (Fermilab)

Gas Electron Multiplier (GEM) detectors are now being formally considered by the CMS collaboration for an upgrade of the CMS muon system. A GEM "demonstrator" system with limited scope is under study for installation in the high-eta muon region during the second long LHC shutdown around 2018 with potential full implementation during the third long LHC shutdown. GEMs are Micro-Pattern Gaseous Detectors that feature 50-100 microns spatial resolution, 4-5 ns time resolution, high detection efficiency, and proven high-rate capability and resilience against aging effects. Advances in GEM foil production and assembly techniques in the last years now allow the construction of large-area GEM detectors suitable for muon systems. Expected benefits for muon tracking and triggering, and muon physics with CMS at the high-luminosity LHC are presented. Current uses of GEMs at the LHC are briefly reviewed. I discuss GEM detection principles, beam test result for CMS prototypes of large-area GEM detectors, and Fl. Tech R&D on GEM readout structures with zigzag strips that promises potentially significant reduction of readout channels (and consequently, cost) while maintaining performance. Design plans for GEM stations at 1.6<|eta|<2.4 in the upgraded CMS forward muon system are described including on-detector and off-detector electronics. Finally, an interesting spin off of GEM technology outside of HEP is also briefly presented, i.e. muon tomography with GEMs for the detection of nuclear contraband in cargo for homeland security purposes. Title: LPC Topic of the Week: Marcus Hohlmann Description: Community: CMS Meeting Access Information: - Meeting URL http://evo.caltech.edu/evoNext/koala.jnlp?meeting=MsMiMI2s2MDlDI9l92Dt9s - Phone Bridge ID: 561 4330 Central Daylight Time (-0500) Start 2012-07-26 13:30 End 2012-07-26 16:30 Japan Standard Time (+0900) Start 2012-07-27 03:30 End 2012-07-27 06:30 Central European Summer Time (+0200) Start 2012-07-26 20:30 End 2012-07-26 23:30 Eastern Daylight Time (-0400) Start 2012-07-26 14:30 End 2012-07-26 17:30 Pacific Daylight Time (-0700) Start 2012-07-26 11:30 End 2012-07-26 14:30 EVO Phone Bridge Telephone Numbers: --------------- - USA (Caltech, Pasadena, CA) +1 626 395 2112 - Switzerland (CERN, Geneva) +41 22 76 71400 - Slovakia (UPJS, Kosice) +421 55 234 2420 - Italy (INFN, several cities) http://server10.infn.it/video/index.php?page=telephone_numbers Enter '4000' to access the EVO bridge - Germany (DESY, Hamburg) +49 40 8998 1340 - USA (BNL, Upton, NY) +1 631 344 6100 - United Kingdom (University of Manchester) +44 161 306 6802 - Australia (ARCS) +61 Adelaide 08 8463 1011 Brisbane 07 3139 0705 Canberra 02 6112 8742 Hobart 03 623 70281 Melbourne 03 8685 8362 Perth 08 6461 6718 Sydney 02 8212 4591 - Netherlands (Nikhef, Amsterdam) +31 20 7165293 Dial '2' at the prompt - Canada (TRIUMF, Vancouver) +1 604 222 7700 - Czech Republic (CESNET, Prague) +420 95 007 2386 - France (RAP, Paris) +33 144 27 81 50 - Skype (tm) (World-wide) evo.phone See: http://evo.caltech.edu/evoGate/Documentation/extclient/skype/skype.html