Difference between revisions of "New fADC with cosmics"
Line 38: | Line 38: | ||
|width="420pt"| | |width="420pt"| | ||
[[Image:run_31598_resids7.png|thumb|420px|Drift radius fit residuals, Struck fADCs, modified HVB, mixed 50/50 at 60 sccm, 2050V]] | [[Image:run_31598_resids7.png|thumb|420px|Drift radius fit residuals, Struck fADCs, modified HVB, mixed 50/50 at 60 sccm, 2050V]] | ||
+ | |} | ||
+ | |||
+ | Below: Cosmics, 2050V, drift radius fit residuals with chosen straw omitted from fit<br> | ||
+ | New fADC with unmodified HVB (left), with modified HVB (center) and Struck fADCs with modified HVB (right), same straw for each.<br> | ||
+ | |||
+ | {| border="0" cellpadding="2" | ||
+ | |width="420pt"| | ||
+ | [[Image:run_31628_residsless1-6.png|thumb|420px|Drift radius fit residuals, new fADC, unmodified HVB, mixed 50/50 at 60 sccm 2050V]] | ||
+ | |width="420pt"| | ||
+ | [[Image:run_31599_residsless1-6.png|thumb|420px|Drift radius fit residuals, new fADC, modified HVB, mixed 50/50 at 60 sccm 2050V]] | ||
+ | |width="420pt"| | ||
+ | [[Image:run_31598_residsless1-7.png|thumb|420px|Drift radius fit residuals, Struck fADCs, modified HVB, mixed 50/50 at 60 sccm, 2050V]] | ||
|} | |} |
Revision as of 16:00, 11 April 2011
- 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.
Below: Cosmics, 2050V, drift time - untracked, new fADC (left) and Struck fADCs (right), same straw for both.
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.
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.