G4beamline Investigation of LiH Contaminated with Cu Tom Roberts Muons, Inc. 3/26/10 TJR1LiH Contaminated with Cu.

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Presentation transcript:

G4beamline Investigation of LiH Contaminated with Cu Tom Roberts Muons, Inc. 3/26/10 TJR1LiH Contaminated with Cu

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 3/26/10 TJRLiH Contaminated with Cu2

Px/Pz – LiH Uncontaminated 3/26/10 TJRLiH Contaminated with Cu3

Ps/Pz – Contaminated 3/26/10 TJRLiH Contaminated with Cu See Previous plot for scales (bug in Root). 4

KEmuon – Contaminated 3/26/10 TJRLiH Contaminated with Cu5

Conclusion 140 ppm of Cu does not appear to significantly affect the multiple scattering or energy loss, compared to pure LiH. 3/26/10 TJRLiH Contaminated with Cu6

Backup – G4beamline input file #Explore Cu contamination in LiH param -unset contam= nEvents= mat1=LITHIUM_HYDRIDE mat2=Cu param frac=1.0-$contam histoFile=$mat1,$contam,$mat2.root physics QGSP_BERT beam gaussian meanMomentum=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= tubs Test outerRadius=500 length=100 material=Material endif place Test z=1 front=1 param Zcl=$Zcl+1 virtualdetector Det radius=500 length=1 color=0,1,0 place Det 3/26/10 TJRLiH Contaminated with Cu7