- 50/50 mixed Ar, CO2
- Recalibrated MFCs
- Outer plenum added to CDC prototype to prevent leaks
- New preamp
- New HVB
Below: Cosmics, 2050V, max amplitude histograms, new fADC with unmodified HVB (left), with modified HVB (center) and Struck fADCs with modified HVB (right), same straw for each.
NB different x axis scale, full scale is 4096 for both ADCs.
Max amplitude histo for cosmics, new fADC, unmodified HVB, mixed 50/50 at 60 sccm 2050V
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Max amplitude histo for cosmics, new fADC, modified HVB, mixed 50/50 at 60 sccm 2050V
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Max amplitude histo for cosmics, Struck fADCs, modified HVB, mixed 50/50 at 60 sccm, 2050V
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Below: Cosmics, 2050V, drift time - untracked, new fADC (left) and Struck fADCs (right), same straw for both.
New fADC cosmics drift time (untracked), mixed 50/50 at 60 sccm 2050V
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Struck fADCs cosmics drift time (untracked), mixed 50/50 at 60 sccm, 2050V
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Below: Cosmics, 2050V, drift radius fit residuals (radius of fitted track - radius interpolated from Garfield drift time calcs)
New fADC with unmodified HVB (left), with modified HVB (center) and Struck fADCs with modified HVB (right), same straw for each.
Drift radius fit residuals, new fADC, unmodified HVB, mixed 50/50 at 60 sccm 2050V
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Drift radius fit residuals, new fADC, modified HVB, mixed 50/50 at 60 sccm 2050V
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Drift radius fit residuals, Struck fADCs, modified HVB, mixed 50/50 at 60 sccm, 2050V
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Below: Cosmics, 2050V, drift radius fit residuals with chosen straw omitted from fit
New fADC with unmodified HVB (left), with modified HVB (center) and Struck fADCs with modified HVB (right), same straw for each.
Drift radius fit residuals, new fADC, unmodified HVB, mixed 50/50 at 60 sccm 2050V
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Drift radius fit residuals, new fADC, modified HVB, mixed 50/50 at 60 sccm 2050V
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Drift radius fit residuals, Struck fADCs, modified HVB, mixed 50/50 at 60 sccm, 2050V
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Below: Fits to drift radius fit residuals
Drift radius fit residuals, new fADC, unmodified HVB, mixed 50/50 at 60 sccm 2050V
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Drift radius fit residuals, new fADC, modified HVB, mixed 50/50 at 60 sccm 2050V
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