1. M. Gilchriese ATLAS Upgrade Introduction January 2008

2. M. Gilchriese 2 SLHC Topics Not in This Talk The physics case for the SLHC –See eg. http://arxiv.org/abs/hep-ph/0204087v1http://arxiv.org/abs/hep-ph/0204087v1 –I would find it interesting to have (not so urgent) a local appraisal of the physics case Technical issues related to how LHC luminosity is increased to reach SLHC luminosity of 10 35 Upgrades to –Calorimetry –Muons –Trigger, DAQ or computing Details of tracking upgrade

3. M. Gilchriese 3 10/12/2015 3 Year ? (present schedule) 2008 2009 2009-2010 > 2010  Ldt ? (guess) up to 100 pb -1 1-few fb -1 O(10 fb -1 ) O(100 fb -1 ) ParameterPhase APhase BPhase CNominal k / no. bunches43-1569362808 Bunch spacing (ns)2021-5667525 N (10 11 protons)0.4-0.9 0.51.15 Crossing angle(  rad) 0250280  */  * nom ) 2  11  * (  m, IR1&5) 322216 L (cm -2 s -1 )6x10 30 -10 32 10 32 -10 33 (1-2)x10 33 10 34 LHC Luminosity?? Optimistic…

4. M. Gilchriese 4 Integrated Luminosity vs Time???? L=10 35 ???? Later ???? 300 fb -1 3000 fb -1

5. M. Gilchriese 5 Monetary Scope – ATLAS/CMS Pixel Cost:32.5 – 34.0 MCHF SS+LS: 105 MCHF (20 MCHF Assembly) Installation: 10 MCHF (Mostly ID) Shielding Upgrade: 5 MCHF LAr Calorimeter:25.5 MCHF Tile Calorimeter: 10 MCHF Muons:2 MCHF Trigger/DAQ: 10 MCHF Electronics: (in the systems) Total Cost: 175-210 MCHF ATLAS CMS EU accounting….

6. M. Gilchriese 6 US Costs Estimate made for P5/DoE some time ago. All US SLHC costs. This is being updated for new P5 panel now. A useful exercise is to compare to the ATLAS silicon tracking cost for the current detector. These are project costs only. Guess SLHC. –Shift by 10 years. Inflate(4%/yr). Scale(factor 2?) FY97/07 FY07/17 ATLAS silicon tracking only

7. M. Gilchriese 7 R LS2 = 950 cm R LS1 = 750 cm R SS3 = 600 cm R SS2 = 490 cm R SS1 = 380 cm Baseline June 07 4 Pixel Layers (Incl. B) 3 Short Strip Layers 2 Long Strip Layers SLHC ID “Strawman” Layout Alternative layouts under study

8. M. Gilchriese 8 ATLAS SLHC Inner Detector Milestones ATLAS Ready for Beam SLHC31/12/2015 ATLAS Upgrade Installation 1/6/2014  31/12/2015 –Prepare for installation 3 month –Installation 10 month –Commissioning 3 month –Closing2 month ID Assembly on the Surface1/1/2013  1/9/2014 –Barrel assembly1/1/2013  1/4/2014 –EC assembly 1/6/2013  1/9/2014 –Pixel /beam Pipe Assembly 1/9/2013  1/1/2015 ID Construction PRR Dates 1/4/2010  1/10/2013 –Thermal Components (PRR)25 /04/2010 –Support structures (PRR) 25/11/2010 –Modules integration (PRR) 21/1/2011 –Sensors (PRR) 12/7/2010 –Readout electronics (PRR) 9/06/2010 TDR 1/2/2010 B-layer replacements: –Ready for beam:1/1/2013 –Beam off – decommissioning7/1/2012 As set by ATLAS Upgrade management December 2007 Very, very aggressive CMS said to be less aggressive…. PRR= Production Readiness Review Note dates in European format! Note ATLAS ID TDR Was April 1997….

9. M. Gilchriese 9 Last Slide Comments –2010ish is seen the as time to make a decision to proceed to full-scale construction ie. know about what to build by roughly when.. –LBL led the US work on silicon tracking for the present detector –Number of US institutions involved in SLHC silicon tracking is expected to increase significantly eg. SLAC, BNL, Penn, many others that were not involved in current silicon detector –SLHC upgrades are very challenging technically and, if current milestones are to be met, also schedule/cost. –“Continuous mode” for LHC/SLHC detector design or fabrication or installation from early 1990s through SLHC detector completion 2016 or later. –Obvious difference between LHC and SLHC will be concurrent data analysis and SLHC detector design/fabrication => expand number of groups involved in ID upgrade. Short presentations this week on current status of local R&D and plans for forthcoming year. Issue; our future roles.