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G4beamline Investigation of LiH Contaminated with Cu

G4beamline Investigation of LiH Contaminated with Cu. Tom Roberts Muons, Inc. Background. 100 mm LiH, 500 mm radius Zero-emittance μ + beam, 200 MeV/ c (=120 MeV) Histograms immediately downstream of LiH Contamination: 0 ppm, 140 ppm, 1000 ppm 1,000,000 events

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G4beamline Investigation of LiH Contaminated with Cu

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  1. G4beamline Investigationof LiH Contaminated with Cu Tom Roberts Muons, Inc. LiH Contaminated with Cu

  2. Background • 100 mm LiH, 500 mm radius • Zero-emittance μ+ beam, 200 MeV/c(=120 MeV) • Histograms immediately downstream of LiH • Contamination: 0 ppm, 140 ppm, 1000 ppm • 1,000,000 events • Pure LiH is a line plot, points with errorbars are contaminated: 140 ppm is red, 1000 ppm is blue LiH Contaminated with Cu

  3. Px/Pz – LiH Uncontaminated LiH Contaminated with Cu

  4. Ps/Pz – Contaminated See Previous plot for scales (bug in Root). LiH Contaminated with Cu

  5. KEmuon – Contaminated LiH Contaminated with Cu

  6. Conclusion • 140 ppm of Cu does not appear to significantly affect the multiple scattering or energy loss, compared to pure LiH. LiH Contaminated with Cu

  7. Backup – G4beamline input file # Explore Cu contamination in LiH param -unset contam=0.000000 nEvents=1000000 mat1=LITHIUM_HYDRIDE mat2=Cu paramfrac=1.0-$contam histoFile=$mat1,$contam,$mat2.root physics QGSP_BERT beam gaussianmeanMomentum=200 particle=mu+ nEvents=$nEvents trackcuts keep=mu+ if $contam<0.0 tubs Test outerRadius=500 length=100 material=$mat1 else material Material $mat1,$frac $mat2,$contam density=0.820000 tubs Test outerRadius=500 length=100 material=Material endif place Test z=1 front=1 paramZcl=$Zcl+1 virtualdetectorDet radius=500 length=1 color=0,1,0 place Det LiH Contaminated with Cu

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