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G4beamline Investigation of LiH Contaminated with Cu

This study explores the effects of copper (Cu) contamination on lithium hydride (LiH) through a zero-emittance muon beam at 200 MeV/c. We analyze the impact of Cu concentrations of 0 ppm, 140 ppm, and 1000 ppm on the scattering and energy loss properties of LiH using a histogram method. Our findings indicate that 140 ppm of Cu contamination does not significantly affect the multiple scattering or energy loss when compared to pure LiH. The investigation includes 1,000,000 events to ensure robust statistical results.

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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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