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Study of Cosmic Ray Induced Background at RENO Experiment

Study of Cosmic Ray Induced Background at RENO Experiment. The 9 th Collaboration Meeting Oct 11, 2008 Seoul National University. Physics department, POSTECH Youngdo OH. y. x. x. z. Simulation ( music + fluka ). Cosmic muon. Mountain surface. Mountain profile ( far ).

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Study of Cosmic Ray Induced Background at RENO Experiment

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  1. Study of Cosmic Ray Induced Background at RENO Experiment The 9th Collaboration Meeting Oct 11, 2008 Seoul National University Physics department, POSTECH Youngdo OH

  2. y x x z Simulation ( music + fluka ) Cosmic muon Mountain surface Mountain profile ( far ) • Muon generation & propagation : • - music with mountain profile and • flux intensity with Gaisser parameterization • - propagation from mountain surface • to imaginary sphere over the tunnel • Muon propagation & neutron • production • - fluka with neutron generation • - propagation from imaginary sphere • to detector 17.53m R=5.23m 1.55m 10.46m

  3. Muon Energy spectrum ( in veto ) Near site ~ 566Hz Far site ~ 89.7 Hz

  4. Neutron flux spectrum ( in veto ) Near site (all neutron) ~ 71Hz Near site (fast neutron) ~ 8.3 Hz Far site (all neutron) ~ 18.2Hz Far site (fast neutron) ~ 2.2 Hz

  5. Muon Generation muon 이 위치의 x,y,z px, py, pz 를 renosim의 입력값으로 활용 3m 현재까지 만든 샘플 수 Near : 8818 Far : 1959 목표 : Near : 300,000개 Far : 300,000개  20CPU를 활용할 경우, 1개월 소요 예상 현 상황 Reno cluster에 fluka이식중, 32bit  64bit

  6. Plan & to do • reno cluster 에 fluka 이식 • muon, neutron 샘플 생산  public area에 데이터 파일 저장 • neutron 샘플에 대하여 reno simulation 시작 • Li, accidental background

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