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Belle Data Analysis using GRID

Belle Data Analysis using GRID. Youngjoon Kwon (Yonsei Univ.) & Hyoungwoo Park (KISTI). I give thanks to Jung-hyun Kim & Sun-min Kim for the actual hard work. CP Violation & electro-weak interaction of elementary particles Testing CKM mechanism of CP violation KEK Accelerator

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Belle Data Analysis using GRID

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  1. Belle Data Analysisusing GRID Youngjoon Kwon (Yonsei Univ.) & Hyoungwoo Park (KISTI) I give thanks to Jung-hyun Kim & Sun-min Kim for the actual hard work.

  2. CP Violation & electro-weak interaction of elementary particles Testing CKM mechanism of CP violation KEK Accelerator Circumfirence ~ 3 km Asymmetric e+e- collision Clean environment of B meson production KEK Belle 실험 소개 전자-양전자 충돌

  3. SVD : vertex point CDC momentum and dE/dx of charged particle ACC : Kaon and pion separation TOF : Kaon and pion separation ECL : energy measurement KLM : measurement the direction of K(long) and to identify muon BELLE detector BELLE detector

  4. 2004년 6/1 현재 260/fb (1/fb = 약 100만 이벤트 = 100GB) 분석시간 (P4 2GHz) 1만 이벤트당 2분 소요시 260/fb = 36.5일 소요 Why Belle needs GRID?

  5. KBDG (Korea Belle Data Grid) • 정보통신부 & KISTI – 국가 그리드 사업 • 경북대학교에서 Data Grid 추진 • 성균관대학교 KBDG 추진 • 현재 BELLE 에서의 그리드 연구 그룹 • 일본 – KEK • 호주 – Melbourne Univ. • 한국 – 성균관대, 경북대, 연세대

  6. KBDG 전체 시스템 소개

  7. KorBELLE PC cluster V2.0 QQ (EvtGen) GEANT (DetSim) Skim Analysis QQConfig RUNConfig QQProcess RUNProcess Belle-lib server (BASF) Batch Job System Node03 Node01 Node02 Node04 KNU Data Storage (Real/MC data)

  8. UI RB CE virtual users SE Node01 Node02 Node03 Node04 NodeN SE structure plan 1) SE : dividing virtual users and Central Data SE 2) virtual users SE always is not mounted NFS or AFS 3) Central Data SE is always mounted NFS or AFS 4) Grid-ftp transfers the data between SE and UI Central Data SE

  9. users job Job Distribution System Globus Toolkit Belle-lib(BASF) server Batch Job System NODES SC2003 • 글로버스 툴킷 2.4 사용 • Belle-lib(BASF) 설치. • Gsim 이벤트 디스플레이 성공. • CA (Certification Authority) • 인증서 방식의 접속.

  10. UI (User Interface)

  11. KISTI 장비 소개

  12. 준비작업 • 경북대 chep19 에 DB 설치 • 인증서 발급 및 설치 설정 • KISTI 에 Belle library 설치 및 설정 • MDST 파일전송 (4/fb data)

  13. J/ψ reconstruction • 전자, 양전자 • eid e.prob(3,-1,3) > 0.01 : electron identification • E over P(E/p) > 0.5 : 에너지/운동량 • dE/dx > 0.5 : 단위길이당 에너지 • 광자보정 : bremsstrahlung 광자(photon) 보정 • Muon+, Muon- • Muid > 0.1 : Muon identification • 0.1 < Ecl < 0.3 : CsI Calorimeter 에서의 하전입자의 위치에너지

  14. J/ψ <BELLE> <KISTI>

  15. Korean Belle Grid Performance * Belle-Cluster1.0 Result Test: MC( 101000 # of events) Belle Lib:b20020424_1007 B->J/Psi + Ks decay J/Psi mass distribution 1. The cluster’s run time speed is N times faster than single Linux Machine. 2. We trust the System for Belle analysis

  16. 요약 • Belle 의 결과와 오차범위 내에서 일치 (4/1.145) X 17 = 59 • 그리드 시스템에 대한 data 검증 Belle 1node 와 KISTI 30node 작업시간결과

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