# 前々回わかったこと（確認したこと） 4 次の Matrix を使ったら収束の振る舞いが良くなった。ただし、もしかし たら初期値が良いせいかもしれない ,  のアクセプタンスに入っていない部分で収束が悪くなっている。 tuning 後の Matrix で 12LB のピークを再現してみると幅は太い（

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19-Dec-2015

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<ul><li> Slide 1 </li> <li> 4 Matrix , tuning Matrix 12LB ~1MeV 4 Matrix , tuning Matrix 12LB ~1MeV Next Step tuning , </li> <li> Slide 2 </li> <li> S/N Kaon QF Cross Section = 0.19*A 0.86 [ b/sr] Kaon Survival Rate = 0.3 HKS Solid Angle = 8msr * Flux w/ HES = 4*10 -5 [/electron] * Flux (overall) = 1.8*10 -2 [/electron] Kaon QF Cross Section = 0.19*A 0.86 [ b/sr] Kaon Survival Rate = 0.3 HKS Solid Angle = 8msr * Flux w/ HES = 4*10 -5 [/electron] * Flux (overall) = 1.8*10 -2 [/electron] O QF H 2 O brems. Window (SUS ) QF Window brems. O QF H 2 O brems. Window (SUS ) QF Window brems. QF Rate QF [Hz] = (VP Flux [/electron] )*(Beam Intensity [electron/sec] )*(Target Density [/cm 2 ] ) *(QF Cross Section [ b/sr] )*(HKS Solid Angle [sr] )*(Kaon Survival Rate) brems. HES Rate C target @ 30 A, 100mg/cm 2 0.6MHz Z 2 normalize HKS QF Rate Coin. [Hz] = (Time Window [ns] )*(HKS Rate [Hz] )*(HES Rate [Hz] ) 1g/cm 2 Rate [Hz] 16O QF0.4 H2O brems.1.3 1.0 SUS QF0.03 SUS brems.0.08 0.02 Signal0.08 10 A SUS100 m 10 A SUS100 m 0.5g/cm 2 Rate [Hz] 16O QF0.2 H2O brems.0.32 0.25 SUS QF0.03 SUS brems.0.08 0.02 Signal0.04 </li> <li> Slide 3 </li> <li> matrix tuning Contain background event in tuning Contents </li> <li> Slide 4 </li> <li> Matrix element GOD tuned </li> <li> Slide 5 </li> <li> Background study 210.5 20.520.450.49 10.550.480.52 0.50.550.450.49 210.5 20.39 0.49 10.39 0.49 0.50.380.390.49 12 Bgs210.5 20.780.620.70 10.840.660.75 0.50.780.520.61 S/N S/N </li> <li> Slide 6 </li> <li> Angular Resolution effect on tuning 05mrad10mrad (MeV) 0.430.520.72 (MeV) 1115.691115.751115.94 (MeV) 0.370.440.62 (MeV) 1192.641192.741192.93 12 B gs (MeV) 0.610.931.28 (MeV) -11.70-11.89-11.81 5mrad 10mrad mass = 1115.683 mass = 1192.642 12 Bgs binding energy = -11.73 mass = 1115.683 mass = 1192.642 12 Bgs binding energy = -11.73 </li> <li> Slide 7 </li> <li> 12 B-like peak using GOD matrix ~200keV </li> <li> Slide 8 </li> <li> How to make sharp peaks? width ( ) = 0.43 MeV width ( ) = 0.37 MeV gs-like width ( ) = 0.6 MeV tuning GOD 2 tuning S/N=1:1 </li> <li> Slide 9 </li> <li> tilt, offset vs S/N tilt, offsetCollimatorVP (*Enge)Background (MHz) 7.0deg, 5.5cmdefault7.50.5 6.5deg, 5.0cmdefault9.40.7 5.6deg, 4.5cmdefault10.20.8 5.2deg, 4.0cmdefault13.01.2+24.5 5.2deg, 4.0cmEYQ1i&gt;-1.710.80.9 Collimator default EYQ1i&gt;-3cm 12C 100mg/cm, 30uA </li> <li> Slide 10 </li> <li> Sieve Slit ~Hole Size~ EXpt [rad] / EXQ1i [cm] Cut : EDC, 840</li></ul>