Difference between revisions of "CDC tilted detectors summary"

From GlueXWiki
Jump to: navigation, search
Line 224: Line 224:
 
| 642 ± 8
 
| 642 ± 8
 
|-
 
|-
−
! colspan="5"| Ratio of MPV  
+
! colspan="5"| Ratio of MPV tilted:horizontal
 
|-
 
|-
 
! colspan="1"|  
 
! colspan="1"|  
−
! colspan="1"| 15 degrees:horizontal
+
! colspan="1"| 15 degrees
−
! colspan="1"| 20 degrees:horizontal
+
! colspan="1"| 20 degrees
−
! colspan="1"| 30 degrees:horizontal
+
! colspan="1"| 30 degrees
−
! colspan="1"| 45 degrees:horizontal
+
! colspan="1"| 45 degrees
 
|-
 
|-
 
|  
 
|  
Line 238: Line 238:
 
| 1.23 ± 0.02
 
| 1.23 ± 0.02
 
|}
 
|}
 +
 +
  
 
{| cellpadding="2" border="1" cellspacing="0"
 
{| cellpadding="2" border="1" cellspacing="0"
Line 253: Line 255:
 
| 18033 ± 190
 
| 18033 ± 190
 
|-
 
|-
−
! colspan="5"| Ratio of MPV  
+
! colspan="5"| Ratio of MPV tilted:horizontal
 
|-
 
|-
 
! colspan="1"|  
 
! colspan="1"|  
−
! colspan="1"| 15 degrees:horizontal
+
! colspan="1"| 15 degrees
−
! colspan="1"| 20 degrees:horizontal
+
! colspan="1"| 20 degrees
−
! colspan="1"| 30 degrees:horizontal
+
! colspan="1"| 30 degrees
−
! colspan="1"| 45 degrees:horizontal
+
! colspan="1"| 45 degrees
 
|-
 
|-
 
|  
 
|  
Line 280: Line 282:
 
|[[Image:run_32070_integfitz_11ns.png|thumb|x150px|Tilt 45°]]
 
|[[Image:run_32070_integfitz_11ns.png|thumb|x150px|Tilt 45°]]
 
|}
 
|}
 +
  
  

Revision as of 12:14, 13 March 2013

Prototype at 2100V, ~50/50 Ar/CO2

Tilted detectors
Tilted detectors

50/50 Ar/CO2 mixed gas

Integrated signal histograms, central block of straws
Horizontal
Tilt 30°
Tilt 45°

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.


Amplitude MPVs and ratios to amplitude with prototype horizontal
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


Integrated signal MPVs and ratios to value for horizontal
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


Integrated signal histograms, drift time < 11ns (1mm either side of the wire)
Horizontal
Tilt 30°
Tilt 45°

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.

Amplitude MPVs and ratios to value for horizontal, drift time < 11ns
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


Integrated signal MPVs and ratios to value for horizontal, drift time < 11ns
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


Integrated signal histograms, Drift time < 11ns
Tilt 0°
Tilt 30°
Tilt 45°


Integrated signal MPVs and ratios to value for horizontal, drift time < 11ns
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


Amplitude histograms, Drift time < 11ns
Tilt 0°
Tilt 15°
Tilt 20°
File:Run 32068 ampfitlanz 11ns.png
Tilt 30°
File:Run 32070-32074 ampfitlanz 11ns.png
Tilt 45°
Amplitude MPVs from Landau fits, drift time < 11ns
Horizontal MPV 15 degrees MPV 20 degrees MPV 30 degrees MPV 45 degrees MPV
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


Integrated signal amplitude MPVs from Landau fits, drift time < 11ns
Horizontal MPV 15 degrees MPV 20 degrees MPV 30 degrees MPV 45 degrees MPV
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




Integrated signal histograms, Drift time < 11ns
Tilt 0°
Tilt 20°
Tilt 30°
Tilt 45°


Integrated signal MPVs and ratios to value for horizontal, drift time < 11ns
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

Ratio of integrated signal fitted Landau MPV to value for horizontal, drift time < 11ns
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
Retrieved from "https://halldweb.jlab.org/wiki/index.php?title=CDC_tilted_detectors_summary&oldid=45450"