ALICE Status 2 nd CERNKorea meeting l ALICE

ALICE Status 2 nd CERN-Korea meeting l ALICE l Korean participation October 2007 CERN-Korea J. Schukraft 1

ALICE Physics Program l Physics : study the state of matter in the early Universe ð Collisions with heavy ions (Pb-Pb): 100 x energy of pp µ energy is distributed over nuclei => Temperature ~ 1012 K (100, 000 x TSUN) µ primordial state of matter, ~ 10 -6 s after the Big Bang: Quark-Gluon Plasma ð ALICE will also participate in the pp running at LHC µ comparison data for heavy ion program µ specific topics for which ALICE is particularly well suited (complementary to ATLAS/CMS/LHCb) 2 Oct 07 CERN-Korea J. Schukraft

Detector: Size: 16 x 26 meters Weight: 10, 000 tons HMPID TOF TRD ITS PMD PHOS Muon Arm Collaboration: > 1000 Members > 100 Institutes >3 30 countries TPC ALICE Set-up Oct 07 CERN-Korea J. Schukraft

ITS barrel ready to enter inside TPC 4 Oct 07 CERN-Korea J. Schukraft

Heavy Ion Physics in Korea l Korean involvement in Heavy Ion Physics ð Korea has a number of active and internationally recognized groups in this field µ CERN SPS fixed target (NA 49, now finished): 1 group µ USA RHIC (Star, Phenix): 7 groups µ LHC ALICE : currently 2 groups ð significant theory community µ Andong, Pusan, Chonnam, Sejong, Kangnung, Yonsei, … ð with Prof. Mannque Rho a very distinguished & internationally known Leader µ promoted heavy ion physics in Korea & initiated and supported LHC participation l LHC provides a unified and long term perspective ð THE place to do frontline research ð ALICE has started a number of initiatives & contacts to explore interest in Korea µ visits and workshops in 2000, 2004, 2006, 2007 µ regular meetings (HIM) and contacts between groups in Korea ð goal: broad, lively and coherent local community involved with heavy ions @ LHC 5 Oct 07 CERN-Korea J. Schukraft

Korean participation I: TOF l Time-of-Flight Project (Kangung) ð new technology, developed in ALICE, copied by many experiments worldwide µ as good or better than previous TOF detectors, but 10 times cheaper ! ð funded via Mo. ST-Italy collaboration (2001 -2007) and Mo. ST – ALICE Mo. U (2006) ð Korea participates in R&D (finished), construction, testing & commissioning of TOF µ very important manpower contribution, very satisfactory collaboration µ since 1999, ~10 students & postdocs from Korea involved in R&D, assembly & testing 6 Oct 07 CERN-Korea J. Schukraft

Korean participation II: Computing l Participation in LHC Computing Grid (Sejong) ð funded via EU FP 6 (2004 -2007) and Mo. ST – ALICE Mo. U (2006) ð Korea participates in software development/deployment and provides computing resources µ manpower: installation/tuning of software in Korea; operation support µ resources: in Sejong & KISTI: at (or above) the pledged level; very high availability 7 Oct 07 CERN-Korea J. Schukraft

ALICE Physics Data Challenge 07 Distributed production of Monte-Carlo data for physics studies Integrated CPU time for ALICE October 2006 – October 2007 u u 64 computing centres in Europe, Asia, North and South America, and Africa. ~ 5000 of jobs running in parallel, production and migration of more than 31 M of files, 1. 6 PB of data Korea (Sejong + Kisti) ~ 2% of ALICE resources in PDC 07 8

Korean participation III: Physics l Physics preparations, Theory (Kangung + Sejong) ð very important work to be well prepared for data and physics exploitation ð participate in physics group 2 (soft physics) and 3 (heavy flavour production) µ simulations, background studies, analysis strategy, theory predictions W. W. Jung and S. C. Lee 9 Pink line : all ESD tracks Blue line : after PID check N_lambda_c = 75631 N_lambda_c =58995 Efficiency = 18. 84 % Efficiency = Resolution = 7. 9 Me. V/c^2 Resolution = 7. 8 Me. V/c^2 14. 7 % Oct 07 CERN-Korea J. Schukraft

Near Term Plans (transparency from April ‘ 07) l Gradually increase Korean participation in ALICE ð by a few strong, experienced & recognized groups in the coming years µ currently one group (Yonsei) has expressed strong interest to join ALICE ð centered around physics analysis µ participation in GRID computing infrastructure µ new hardware limited to participation in detector commissioning & operation l Financial implications ð no new construction responsibilities are envisaged µ some increase in GRID computing capacity in Korea could be discussed ð one-time 50 k. CHF contribution to the Common Fund per new Institute ð operation expenses µ M&O A (~13 KCHF/year per Ph. D) µ group operation (travel, students, …. ) l Procedure ð ALICE would like to discuss with and get advice from Korean Funding Agency µ if such a gradual increase in Korean participation may be supported µ how and on which time scale this could be implemented 10 Oct 07 CERN-Korea J. Schukraft

M&O in ALICE l M&O funds the operation of the ALICE experiment ð budget scrutinized & approved yearly by RRB ð cost shared equally by members with Ph. D µ number of people in ALICE increased by 10% since 2005 => cost person decreased by 10% ! l M&O is required from all participating senior scientists ð participating in the physics exploitation requires participation in cost sharing ð M&O list is linked to author list in publications (students however don’t have to pay) l Funding for M&O 11 ð in general by a government Funding Agency, providing some long term perspective ð in special cases by other funding agents (eg University or Institute) µ eg some US Institutes funded by NSF grants, Japanese Universities funded by MEXT grant, GSI via Institute budget, . . µ not ideal, because grants usually lack predictability and long term stability Oct 07 CERN-Korea J. Schukraft

Status October ‘ 07 l Application of Yonsei University ð currently funded via grant by University/Mo. E ð main interest: Physics and Analysis studies µ installation of ALICE software at Yonsei µ Physics: direct photons via mass lepton pairs (experience from PHENIX at RHIC/USA) µ Analysis: advanced software for TRD => factor 4 improvement of TDR performance ð Collaboration with the TPC/TRD projects (GSI/Heidelberg in Germany) µ 1 student for 1 year at GSI, working on Detector Control software µ 2 students working on physics and analysis ð German Institutes applied for grants (DAAD) for German-Korean collaboration l Discussions during summer ALICE-Yonsei-Mo. ST ð further steps concerning formal participation await guidance from Mo. ST 12 25/4/2007 22 nd RRB J. Schukraft

Summary l ALICE detector ð installation & commissioning progressing on schedule ð looking forward to first physics in 2008 l Korean participation in ALICE ð very successful and satisfactory collaboration with Kangung/Sejong µ important contribution to TOF project (R&D, participation in assembly & commissioning) µ GRID computing in Korea well integrated & efficient µ physics preparations ongoing ð secured additional funding via international sources µ Korea-Italy, World Lab, Mo. ST <-> EU FP 6, maybe Germany DAAD in the future l Future Collaboration ALICE - Korea ð ALICE sees the potential and would welcome a gradual increase of basis in Korea µ concentrated on physics analysis and computing µ no additional construction funding requested or implied ! 13 25/4/2007 22 nd RRB J. Schukraft