12 Dec 2005 J. Schukraft 1

ALICE USAALICE USAALICE USAALICE USA

ALICE position towards US participation

EU participation in emcal Requirements Formal steps & schedule

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ALICE position towards US ALICE position towards US participationparticipation

ALICE = heavy ion community active at CERN one dedicated, general purpose heavy ion experiment ~ 90% of community, 100% EU funding (~ 5% ‘only’ SPS, ~ few % CMS/Atlas)

ALICE is very supportive of a significant US participation Physics of US project:

jet physics is definitely one of the (the ?) hottest topic at LHC calorimeter instrumental for sensible & sensitive jet measurements

Know-how transfer: physics & experience from RHIC (first HI collider) VERY relevant at LHC

Science Policy: continue tradition of inter-regional collaboration in HI: AGS-SPS-RHIC -> LHC ?

> 25 Institutes, > 10M$ investment of ALICE members at RHIC was instrumental to coordination and success of the field recognized & explicitly supported by eg by NuPecc, OECD-megascience forum, NSAC

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Non-US participation in emcalNon-US participation in emcal expressed intention to participate

France: Nantes, Strasbourg, Grenoble (new Institute)

Italy: Catania (2 groups), Frascati (new Institute, Hermes)

Other: IHEP Protvino, CERN (Infrastructure & Installation)

manpower: 30 physicists, > 15 tech+eng considerable technical & infrastructure support in several labs

participation has already started manufacturing & installation of emcal support rails

done in 2004 (early, for technical reasons) FEE (PHOS) and ALICE-DAQ system for emcal test beam

material & support (CERN) mechanical design & engineering for support structures etc..

ongoing (Nantes) several US-EU meetings to coordinate efforts

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Scope & TimelineScope & Timeline scope of non-US participation

France & Italy expect to provide the equivalent of 3 Supermodules assuming current US costing, as applicable to EU funding

ALICE-CERN will provide general infrastructure, integration and DAQ support at the same level as for all other ALICE subsystems

timeline National (F+I) ALICE institutes have discussed and agreed emcal participation first contacts with INFN/IN2P3; very positive response funding application in 2006; first construction money could be available early 2007

envisage 3 year funding and construction period (’07-’09) R&D + travel funds already in 2006 increased eng/tech manpower will be available already in 2006

formal requirements @ CERN emcal project has been regularly, but informally, discussed with CERN/LHCC/RRB submit ‘Technical Proposal’ to LHCC by 19 April 2006, approval ~ Sept.

required for EU funding early 2007 ! submit ‘Technical Design Report’ by end 2006 or early 2007

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emcal emcal ScheduleSchedule driven by physics priority & LHC HI schedule

jet quenching is one of the most promising, highest priority topics at LHC it can and will be addressed in the initial part of the program (first ~ 5 years) needs substantial Luminosity (~ 0.5 nb-1) and pA comparison data (= RHIC)

LHC schedule detector & machine commissioning with pp (≠ RHIC)

even being conservative, reasonable pp lumi before end 2008 first Pb-Pb run end 2008 should give >> 106 central events

=> few 103 jets > 100 GeV in ||<0.5 for 106 untriggered events !

2009 + 2010: accumulate Pb-Pb Lumi to about 1 nb-1

2011 (or 2010, like RHIC, depending on physics priority) : pA comparison 2012 and after: systematic scans (E, beam type), new physics topics, …

High pt and jet physics will start in 2008 !

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EMCAEMCALL LHC schedule

emcal needs substantial Luminosity (~ 0.5 nb-1) and pA comparison data (= RHIC) 2009 + 2010: accumulate Pb-Pb Lumi to about 1 nb-1

2011 (or 2010, like RHIC, depending on physics priority) : pA comparison 2012 and after: systematic scans (E, beam type), new physics topics, …

emcal schedule for guaranteed minimum physics program in the ‘foreseeable LHC future’

emcal needs to be complete and commissioned by October 2010 (Run 3) latest installation window: winter 2009/2010 (=> ready for Nov 2009)

have reasonable fraction (~ 50%) for 2009 run (Nov 2008) use untriggered data for trigger bias studies commission trigger start of physics

1 module in 2008 (Nov 2007) highly desirable test & commission hardware & software ‘participate in the most exciting first data taking’

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Joining ALICEJoining ALICE General requirements (~ identical for all LHC experiments)

documented in Memoranda of Understanding construction MoU, M&O MoU, 2 Computing MoU’s (1/expt, 1 for LCG)

contribute to the Collaboration commensurate with their strength project specific hardware (i.e. emcal)

take fair share in ‘common tasks’ Common Fund, M&O, computing

Common Fund (CF) ALICE = 10% of capital investment Atlas=44%/CMS=33%/LHCb=26%

common elements (local infrastructure, magnet, vacuum chamber, …) cash: 45 kCHF/Institute (5 kCHF/Institute/year 1998 –> 2006)

newcomers: payment schedule to be agreed

remaining: cash or ‘in kind’ (delivery of items included in the CF)

ALICE agrees to account emcal support structure to complete remaining CF

Computing Grid computing: shared resources (T0/T1/T2 centers) + local resources (T3) ALICE agrees that the ‘fair share’ amounts to 6% of the ALICE T1+T2 requests

based on our current understanding of the scope of the US contribution (30 PhD)

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M&OM&O Maintenance & Operation (of ALICE)

include ALICE specific items & CERN general services (new since 2002) ‘pro rata’ accounting, based on ‘PhD or equivalent’ (i.e. students are free)

reviewed and agreed by the Funding Agencies yearly (‘RRB’) approx cost/PhD: ~ 10 kCHF(2007), ~ 14 kCHF( 2008 and beyond)