Charm Research in Heavy Ion Experiment Pusan National Univeristy HIPEx Lab. In-Kwon YOO For the HIM_SRC (Center for Quark Matter)

In-Kwon YOOHIM Research Strategy 1.Computing Infrastructure 2.Warming up  */K* at SPS 3.Charm Production at RHIC D  K -  +  C  pK -  + 4.Charm Production at LHC

In-Kwon YOOHIM Star Asian Computing Center Computing Infrastructure with massive data from STAR –Frontier Research –Maximum Use of IT resources in Korea Data Transfer Cluster Computing with Supercomputer Mass Storage Korean Institute for Science and Technology Informations Daejoen) – Korean HUB for GLORIAD + KREONET – Super Computing Resources – Mass Storage Management  Asian Supercomputing HUB : - BNL – NERSC – KISTI – SSC etc.

In-Kwon YOOHIM STAR Computing

In-Kwon YOOHIM Cluster system Item Cluster system Phase 1Phase 2 Manufacturer & ModelSUN C48SUN Fusion ArchitectureCluster Processor AMD Opteron 2GHz (Barcelona) Intel Xeon 3.3GHz+ (Gainestown) Operating SystemCent OS Nodes1882,688 CPU cores 3,008 (16/node) 21,504 (8/node) Rpeak24TFlops286TFlops Memory6TB64.5TB Disk storage207TB1PB Tape storage422TB2PB Interconnection networkInfiniband 4X DDR CoolingChilled water cooling Delivery dateJan, 20082Q, 2009  Phase 2 system(286TFlops) includes 24TFlops for phase 1 system replacement Dr. SDLee in KISTI

In-Kwon YOOHIM Item SMP system Phase 1Phase 2 Manufacturer & ModelIBM p595IBM p6H ArchitectureSMP ProcessorPOWER5+ 2.3GHzPOWER6 5GHz+ Operating systemAIX 5.3AIX 5.3+ Nodes1024 CPU cores 640 (64/node) 1,536 (64/node) Rpeak5.9TFlops30.7TFlops Memory2.6TB9.2TB Disk storage63TB273TB Tape storage- Interconnection networkHPSInfiniband 4X DDR CoolingAir-cooling Delivery dateSept, 20071Q, 2009 SMP system

In-Kwon YOOHIM Research Networks KREONET

In-Kwon YOOHIM GLORIAD

In-Kwon YOOHIM What-to-Do List at KISTI-PNU in 2008 STAR Software Infrastructure (SofI) Data Location Tools –Resource Monitoring Tools –Web Sanity, Documentation Tools –HPSS Tools & Services Data Transfer (20~50TB) from NERSC/BNL to KISTI Data Locating and Service Setup (Data Carousel) Root4STAR/ STARSim Setup/ConfigurationRoot4STARSTARSim Computing –Code Optimization –Parallel Computing

In-Kwon YOOHIM SACC Working Group PNU –IKYoo / JHKim (PhD st.) / KEChoi (MA st.) BNL (STAR) –Jlauret : STAR S&C Leader / JDunlop : STAR Deputy LBNL (PDSF) –NXu : STAR Spokesperson, MoUs SSC (Tsinghua Univ.) –ZXiao : KR-CN Funding Agency

In-Kwon YOOHIM Plan of STAR Collaboration at KISTI KISTI Resources Plans for STAR Items KISTI's SUN Cluster System 4th Superom 1st phase AMD Opteron 2GHz (Barcelona) 4th Supercom 2nd phase system Intel Xeon 3.3GHz+ (Gainestown) KISTI Resources Plans for STAR minimum #of CPUs32~150150~250about 500about 700 Storage Disk(TB) Tape(TB) NetworkGLORIAD~10G ~20G KISTI Manpower for STAR Network SpecialistDr. Dong Kyun KIM, Computer Scientist System EngineerMr. Jun WOO, Computer Engineering (Master Degree) Storage ManagerMr. Kelvin CHOI, Computer Science (Master Degree) Physics ResearchDr. Hyun Woo KIM, Physicist (Particle Physics)

In-Kwon YOOHIM  */K* Motivation **K* p K  K How many K*,  * at chemical freeze-out? How long do they live? How many are their daughter absorbed in medium? Resonance K(892)  (1520) Decay channel K +  p + K Width [MeV] Life time [fm/c] Comparison of p+p, 158 AGeV

In-Kwon YOOHIM Signal Reconstruction pp PbPb PRELIMINARY

In-Kwon YOOHIM Results peripheralcentral PRELIMINARY

In-Kwon YOOHIM Discussion & Outlook Strangeness Enhancement vs. Suppression Suppressed  *  Medium Effect ? (excited) Baryon Effect ? Lifetime (  ) betw. chemical and kinetic freezeout > 4fm/c (K* lifetime) ? (UrQMD   ~ 5fm/c !) Consistency check System Size dependency check for  * /Lambda1520KISTI.htm

In-Kwon YOOHIM (1) Secondary Vertex Resolution shows Position Resolution of our Detector (2) Secondary Vertex Resolution information can be used as a cut which has short decay length like D-meson(123.0 ) Secondary Vertex Resolution Study at STAR : We can reconstruct secondary vertices which from Conversion Gamma at our material budget and compare with real material budget KEChoi in PNU

In-Kwon YOOHIM STAR Detector & Conversion Gamma Front view Side view What we are looking for is like this...

In-Kwon YOOHIM Dataset & Particle Identification Dataset : Number of event : 30M events [Selected electron track] [All track]

In-Kwon YOOHIM Applied Cuts Part I. V0 definition Part II. Opening Angle Cut : Remove electrons from Dalitz decay

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In-Kwon YOOHIM Outlook (Oct08) STAR –D Analysis with SVT (Nov08) –  C Reconstruction with SVT (Feb09) –  C  Dp Reconstruction (09) NA49 –  * Signal at SPS (Fall 08) ALICE –  C Simulation (Winter 08)