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Explore the impact of solenoid parameters in particle detectors, calculate bending effects, and model field variations for accurate results.
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ϕ-bending in an infinite solenoid • ρ = pT /.3 B • α = Rc/ρ • Δϕ1 = α/2 • Δϕ = Δϕ1Rc/Rd • Δϕ= (.3 B/ pT) . Rc2/Rd/2 • pT=20 GeV/c • B=2T • Rc=1m • D1 : Rd>1.3 m, Δϕ< 11mrad • D2 : Rd>2.2 m, Δϕ< 7 mrad • D3 : Rd>3.4 m, Δϕ< 4 mrad Δϕ Detector (Rd) Δϕ1 α ρ Solenoid (Rc)
Field model of the real solenoid B=2T z2=4m z1=2m
Computing ∫BzdR 1 2 Rc • Case 1: ∫BzdR = B Rc • Case 2: ∫BzdR= B (Rt + (Rc-Rt)(2*Z2-Z1-Ze)/(Z2-Z1)/2) • Case 3: ∫BzdR=B (Rt+Re)/2 3 Re Rt Rt Ze Z1 Z2