Difference between revisions of "CDC tilted detectors summary"
From GlueXWiki
Line 212: | Line 212: | ||
{| cellpadding="2" border="1" cellspacing="0" | {| cellpadding="2" border="1" cellspacing="0" | ||
|+ Amplitude MPVs from Landau fits, drift time < 11ns | |+ Amplitude MPVs from Landau fits, drift time < 11ns | ||
+ | |- | ||
! colspan="5"| MPV from Landau fit to integrated amplitude histo | ! colspan="5"| MPV from Landau fit to integrated amplitude histo | ||
− | | | + | |- |
! colspan="1"| Horizontal | ! colspan="1"| Horizontal | ||
! colspan="1"| 15 degrees | ! colspan="1"| 15 degrees | ||
Line 275: | Line 276: | ||
|- | |- | ||
! colspan="5"| Ratio of vertical path length for detector tilted:horizontal | ! colspan="5"| Ratio of vertical path length for detector tilted:horizontal | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
|- | |- | ||
| | | |
Latest revision as of 12:28, 13 March 2013
Prototype at 2100V, ~50/50 Ar/CO2
Contents
50/50 Ar/CO2 mixed gas
The paler lines are fits to a Landau dist, the darker lines are fits to a Landau-Gaussian convolution.
Ratio of MPVs of Landau fit to integration histograms for horizontal : 30° : 45° should be 1 : 1.15 : 1.41
The 45° and 0° runs were separated by 1/2 day; the 30° data was taken one week later.
Horizontal MPV | 30 degrees MPV | 45 degrees MPV | 30 degrees:horizontal | 45 degrees:horizontal | |||||
---|---|---|---|---|---|---|---|---|---|
Landau | Landau-Gauss | Landau | Landau-Gauss | Landau | Landau-Gauss | Landau | Landau-Gauss | Landau | Landau-Gauss |
218 | 229 | 256 | 264 | 264 | 285 | 1.17 | 1.15 | 1.21 | 1.24 |
Horizontal MPV | 30 degrees MPV | 45 degrees MPV | 30 degrees:horizontal | 45 degrees:horizontal | |||||
---|---|---|---|---|---|---|---|---|---|
Landau | Landau-Gauss | Landau | Landau-Gauss | Landau | Landau-Gauss | Landau | Landau-Gauss | Landau | Landau-Gauss |
5167 | 5301 | 6722 | 7446 | 7163 | 8113 | 1.30 | 1.40 | 1.39 | 1.53 |
50/50 Ar/CO2 mixed gas, hits closer than 1mm to the wire
The events in the noise peak in the amplitude histo do not reach the integration histo because the code ignores hits with a leading edge gradient less than 1.
Horizontal MPV | 30 degrees MPV | 45 degrees MPV | 30 degrees:horizontal | 45 degrees:horizontal | |||||
---|---|---|---|---|---|---|---|---|---|
Landau | Landau-Gauss | Landau | Landau-Gauss | Landau | Landau-Gauss | Landau | Landau-Gauss | Landau | Landau-Gauss |
281 | 272 | 364 | 335 | 382 | 383 | 1.30 | 1.23 | 1.36 | 1.41 |
Horizontal MPV | 30 degrees MPV | 45 degrees MPV | 30 degrees:horizontal | 45 degrees:horizontal | |||||
---|---|---|---|---|---|---|---|---|---|
Landau | Landau-Gauss | Landau | Landau-Gauss | Landau | Landau-Gauss | Landau | Landau-Gauss | Landau | Landau-Gauss |
8604 | 7986 | 11658 | 10839 | 12339 | 11537 | 1.35 ± 0.04 | 1.36 | 1.43 ± 0.04 | 1.44 |
51/49 Ar/CO2 premixed gas, unfiltered, label reads analysis 49.1 CO2
Horizontal MPV | 30 degrees MPV | 45 degrees MPV | 30 degrees:horizontal | 45 degrees:horizontal |
---|---|---|---|---|
Landau | Landau | Landau | Landau | Landau |
12970 | 15850 | 16217 | 1.22 ± 0.02 | 1.25 ± 0.03 |
More 51/49 Ar/CO2 premixed gas, unfiltered, label reads analysis 48.6 CO2
MPV from Landau fit to integrated amplitude histo | ||||
---|---|---|---|---|
Horizontal | 15 degrees | 20 degrees | 30 degrees | 45 degrees |
520 ± 6 | 501 ± 11 | 546 ± 12 | 559 ± 11 | 642 ± 8 |
Ratio of MPV tilted:horizontal | ||||
15 degrees | 20 degrees | 30 degrees | 45 degrees | |
0.96 ± 0.02 | 1.05 ± 0.03 | 1.08 ± 0.02 | 1.23 ± 0.02 |
MPV from Landau fit to integrated amplitude histo | ||||
---|---|---|---|---|
Horizontal | 15 degrees | 20 degrees | 30 degrees | 45 degrees |
12398 ± 138 | 13609 ± 227 | 14330 ± 264 | 15334 ± 273 | 18033 ± 190 |
Ratio of MPV tilted:horizontal | ||||
15 degrees | 20 degrees | 30 degrees | 45 degrees | |
1.10 ± 0.02 | 1.16 ± 0.02 | 1.22 ± 0.02 | 1.45 ± 0.02 | |
Ratio of vertical path length for detector tilted:horizontal | ||||
1.04 | 1.06 | 1.15 | 1.41 |
Horizontal MPV | 20 degrees MPV | 30 degrees MPV | 45 degrees MPV | 20 degrees:horizontal | 30 degrees:horizontal | 45 degrees:horizontal |
---|---|---|---|---|---|---|
Landau | Landau | Landau | Landau | Landau | Landau | Landau |
12974 ± 219 | 15057 ± 260 | 16053 ± 266 | 18642 ± 272 | 1.16 ± 0.03 | 1.24 ± 0.03 | 1.43 ± 0.03 |
All ratios in one table
Gas mix | 20 degrees:horizontal | 30 degrees:horizontal | 45 degrees:horizontal |
---|---|---|---|
50/50 mixed gas | 1.35 ± 0.04 | 1.43 ± 0.04 | |
50.8/49.1 premixed gas | 1.22 ± 0.02 | 1.25 ± 0.03 | |
51.4/48.6 premixed gas | 1.16 ± 0.03 | 1.24 ± 0.03 | 1.43 ± 0.03 |