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HES Simulation Log ～ VP Flux について～

HES Simulation Log ～ VP Flux について～. VP Flux とは E01-011 における VP Flux E05-115 における VP Flux. About VP Flux. The definition of VP Flux (Γ). (e,e’K + ) reaction. VP absorption Cross Section. (e,e ’ K + ) diff. Cross Section Ω, ω : Angle and Momentum of e ’. 要するにどれだけの数の vp を生成したか、という量.

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HES Simulation Log ～ VP Flux について～

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  1. HES Simulation Log～VP Fluxについて～ VP Fluxとは E01-011におけるVP Flux E05-115におけるVP Flux

  2. About VP Flux The definition of VP Flux (Γ) (e,e’K+) reaction VP absorption Cross Section (e,e’K+) diff. Cross Section Ω, ω : Angle and Momentum of e’ 要するにどれだけの数のvpを生成したか、という量 Γ Formula Reference: T.DEForest, Jr and J.D.Walecka, ”Electron Scattering and Nuclear Structure”, Advances In Physics 15 (1966) 1.

  3. VP Flux and its integration NoVP : Number of Virtual Photon NoE : Number of Electron Total VP Yield → Integration of Γ(Ω,ω) represent the Acceptance of Spectrometer (Integrated) VP Flux (unit : [NoVP/NoE]) Independent on the target and beam intensity Ntotal → depend on the target and beam intensity VP Rate [NoVP/sec]

  4. VP Flux @ E01-011 Assumption : 100mg/cm212C target, 20uA beam, σγ=100 [nb/sr] HKS Solid Angle = 0.015 [rad] , Kaon Decay Rate = 0.3 Conditions on Rough Estimation : -120<x’<120[mrad], 70<y’<90[mrad], p=300[MeV], dp=±30% inconsistent

  5. VP Flux @ E05-115 (HES) Assumption : 100mg/cm212C target, 20uA beam, σγ=100 [nb/sr] HKS Solid Angle = 0.008 [rad] , Kaon Decay Rate = 0.3

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