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Analysis report H.Yim (6/22/2006). 2 Table of contents 1. TC cut selection region 2. Spectrum...
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Analysis report H.Yim (6/22/200 6)
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Transcript of Analysis report H.Yim (6/22/2006). 2 Table of contents 1. TC cut selection region 2. Spectrum...
Analysis report
H.Yim(6/22/2006)
2
Table of contents1. TC cut selection region 2. Spectrum comparison after bug fixing on 1/beta - At previous, was used for 1/β. It just gave a worse r
esolution. - Now, is used.
3. E471 neutron momentum spectra for a comparison with present analysis.4. neutron momentum spectra with 7 MeVee5. neutron momentum spectra with 10 MeVee6. neutron momentum spectra with 7 MeVee for L-arm -- L-arm have relatively good resolution than R-arm’s one as previously reported.
7. neutron momentum spectra with 7MeVee for R-arm8. neutron momentum spectra with 10MeVee for L-arm9. neutron momentum spectra with 10MeVee for R-arm10. neutron momentum spectra with VcaVn cut -- VcaVn cut is applied with fast-π selection on TC. Two different region selection of VcaVn is compared on the same figure.11. 1/β quality checking I -- <1/β vs. ADC>, < 1/β for each thresh>,< 1/β vs. Z,X_vertex>
12. 1/β quality checking II -- < 1/β vs. Y_vertex>, < 1/β vs. BLC cos>, < 1/β vs. Y-position on NC>
13. 1/β quality checking III -- < 1/β resolution vs. each layer>, < 1/β vs. ADC for each layer>14. 1/β quality checking IV -- < 1/β vs. L_γ >
*In all neutron momentum spectra, the unit of Y-axis is counts/(10MeV/c) as same as reference figure.
)//()/( 0 cLcLTTT KaonTNC
)//()( 0 cLTTT KaonTNC
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1. TC cut selection region on dE/dx
E471
α – proton selection
δ – slow pion selection
ζ – fast pion selection
E549
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2. Spectrum comparison after
bug fixing on 1/beta
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3. E471 neutron momentum spectra for comparison (from Suzuki-san’s thesis)
Semi-inclusive
proton
Fast-pion
Slow pion
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4. Neutron momentum spectra with 7 MeVee threshol
d
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5. Neutron momentum spectra with 10 MeVee thresh
old
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6. Neutron momentum spectra with 7 MeVee threshol
d (L-arm)
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7. Neutron momentum spectra with 7 MeVee threshol
d (R-arm)
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8. Neutron momentum spectra with 10 MeVee thresh
old (L-arm)
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9. Neutron momentum spectra with 10 MeVee thresh
old (R-arm)
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10. Neutron momentum spectra with VcaVn cut
( black line is for -25<VcaVn<-5 )( red line is for -60<VcaVn<-25 or -5<VcaVn<-2 )
10 MeVee threshold
7 MeVee threshold
7 MeVee threshold
10 MeVee threshold
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11. 1/β quality checking I
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12. 1/β quality checking II
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Typical one in L-armTypical one in R-arm
All counters show bending structure.
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13. 1/β quality checking III
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L-arm
R-arm
Later part of layers should have better resolution, but left figure doesn’t show that tendency. So, performance of each layer has checked. The result is following two figures.
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14. 1/β quality checking IV
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