Difference between revisions of "CDC tilted detectors"

From GlueXWiki
Jump to: navigation, search
 
(18 intermediate revisions by the same user not shown)
Line 32: Line 32:
 
The paler lines are fits to a Landau dist, the darker lines are fits to a Landau-Gaussian convolution.
 
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...
+
Ratio of MPVs of Landau fit to integration histograms for
−
horizontal : 30deg : 45deg is 5110 : 6620 : 7160  or 1 : 1.29 : 1.40
+
horizontal : 30° : 45° should be 1 : 1.15 : 1.41
−
Ideally this 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.
  
  
Line 67: Line 68:
 
| 1.24
 
| 1.24
 
|}
 
|}
 +
  
 
{| cellpadding="2" border="1" cellspacing="0"
 
{| cellpadding="2" border="1" cellspacing="0"
Line 98: Line 100:
 
| 1.53
 
| 1.53
 
|}
 
|}
 +
 +
<h4>Hits closer than 1mm to the wire</h4>
 +
{| border="0" cellpadding="2"
 +
|+ Prototype horizontal, drift time < 11ns (1mm either side of the wire)
 +
|[[Image:run_31962_ampfit_11ns.png|thumb|x150px|Max amplitude]]
 +
|[[Image:run_31962_ampfitz_11ns.png|thumb|x150px|zoomed ]]
 +
|[[Image:run_31962_integfit_11ns.png|thumb|x150px|Integration]]
 +
|[[Image:run_31962_integfitz_11ns.png|thumb|x150px|zoomed ]]
 +
|}
 +
 +
{| border="0" cellpadding="2"
 +
|+ Prototype tilted 30deg, drift time < 11ns (1mm either side of the wire)
 +
|[[Image:run_31979_ampfit_11ns.png|thumb|x150px|Max amplitude]]
 +
|[[Image:run_31979_ampfitz_11ns.png|thumb|x150px|zoomed ]]
 +
|[[Image:run_31979_integfit_11ns.png|thumb|x150px|Integration]]
 +
|[[Image:run_31979_integfitz_11ns.png|thumb|x150px|zoomed ]]
 +
|}
 +
 +
{| border="0" cellpadding="2"
 +
|+ Prototype tilted 45deg, drift time < 11ns (1mm either side of the wire)
 +
|[[Image:run_31955_ampfit_11ns.png|thumb|x150px|Max amplitude]]
 +
|[[Image:run_31955_ampfitz_11ns.png|thumb|x150px|zoomed ]]
 +
|[[Image:run_31955_integfit_11ns.png|thumb|x150px|Integration]]
 +
|[[Image:run_31955_integfitz_11ns.png|thumb|x150px|zoomed ]]
 +
|}
 +
 +
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.
 +
 +
 +
{| cellpadding="2" border="1" cellspacing="0"
 +
|+ Amplitude MPVs and ratios to value for horizontal, drift time < 11ns
 +
! colspan="2"| Horizontal MPV
 +
! colspan="2"| 30 degrees MPV
 +
! colspan="2"| 45 degrees MPV
 +
! colspan="2"| 30 degrees:horizontal
 +
! colspan="2"| 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
 +
|}
 +
 +
 +
{| cellpadding="2" border="1" cellspacing="0"
 +
|+ Integrated signal MPVs and ratios to value for horizontal, drift time < 11ns
 +
! colspan="2"| Horizontal MPV
 +
! colspan="2"| 30 degrees MPV
 +
! colspan="2"| 45 degrees MPV
 +
! colspan="2"| 30 degrees:horizontal
 +
! colspan="2"| 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 &plusmn; 0.04
 +
| 1.36
 +
| 1.43 &plusmn; 0.04
 +
| 1.44
 +
|}
 +
  
  
Line 116: Line 210:
 
Repeating the tilted measurements just in case the scintillators moved slightly between measurements
 
Repeating the tilted measurements just in case the scintillators moved slightly between measurements
 
<br/>
 
<br/>
 +
 +
{| border="0" cellpadding="2"
 +
|+ Prototype tilted 0deg
 +
|[[Image:run_31989_ampfit.png|thumb|x150px|Max amplitude]]
 +
|[[Image:run_31989_integfit.png|thumb|x150px|Integration]]
 +
|}
  
 
{| border="0" cellpadding="2"  
 
{| border="0" cellpadding="2"  
 
|+ Prototype tilted 30deg
 
|+ Prototype tilted 30deg
 
|[[Image:run_31986_ampfit.png|thumb|x150px|Max amplitude]]
 
|[[Image:run_31986_ampfit.png|thumb|x150px|Max amplitude]]
−
|[[Image:run_31986_ampfitz.png|thumb|x150px|zoomed ]]
 
 
|[[Image:run_31986_integfit.png|thumb|x150px|Integration]]
 
|[[Image:run_31986_integfit.png|thumb|x150px|Integration]]
−
|[[Image:run_31986_integfitz.png|thumb|x150px|zoomed ]]
 
 
|}
 
|}
  
Line 128: Line 226:
 
|+ Prototype tilted 45deg
 
|+ Prototype tilted 45deg
 
|[[Image:run_31984_ampfit.png|thumb|x150px|Max amplitude]]
 
|[[Image:run_31984_ampfit.png|thumb|x150px|Max amplitude]]
−
|[[Image:run_31984_ampfitz.png|thumb|x150px|zoomed ]]
 
 
|[[Image:run_31984_integfit.png|thumb|x150px|Integration]]
 
|[[Image:run_31984_integfit.png|thumb|x150px|Integration]]
−
|[[Image:run_31984_integfitz.png|thumb|x150px|zoomed ]]
 
 
|}
 
|}
  
 
The paler lines are fits to a Landau dist, the darker lines are fits to a Landau-Gaussian convolution.
 
The paler lines are fits to a Landau dist, the darker lines are fits to a Landau-Gaussian convolution.
−
 
−
 
  
  
Line 157: Line 251:
 
! Landau-Gauss
 
! Landau-Gauss
 
|-
 
|-
−
|
+
| 383
−
|
+
| 403
 
| 394
 
| 394
 
| 419
 
| 419
 
| 378
 
| 378
 
| 413
 
| 413
−
|  
+
| 1.03
−
|  
+
| 1.04
−
|  
+
| 0.99
−
|  
+
| 1.02
 
|}
 
|}
 +
  
 
{| cellpadding="2" border="1" cellspacing="0"
 
{| cellpadding="2" border="1" cellspacing="0"
−
|+ Integrated signal MPVs and ratios to value for horizontal - old data, ignore for now
+
|+ Integrated signal MPVs and ratios to value for horizontal
 
! colspan="2"| Horizontal MPV  
 
! colspan="2"| Horizontal MPV  
 
! colspan="2"| 30 degrees MPV
 
! colspan="2"| 30 degrees MPV
Line 188: Line 283:
 
! Landau-Gauss
 
! Landau-Gauss
 
|-
 
|-
−
|  
+
| 8038
−
|  
+
| 7994
 
| 9049
 
| 9049
 
| 10413
 
| 10413
 
| 9291
 
| 9291
 
| 10591
 
| 10591
−
|  
+
| 1.13 &plusmn; 0.02
−
|  
+
| 1.30
−
|  
+
| 1.16 &plusmn; 0.02
−
|  
+
| 1.32
 +
|}
 +
 
 +
 
 +
 
 +
{| border="0" cellpadding="2"
 +
|+ Integrated signal histograms, Drift time < 11ns
 +
|[[Image:run_31989_integfit_11ns.png|thumb|x150px|Tilt 0&deg;]]
 +
|[[Image:run_31986_integfit_11ns.png|thumb|x150px|Tilt 30&deg;]]
 +
|[[Image:run_31984_integfit_11ns.png|thumb|x150px|Tilt 45&deg;]]
 +
|}
 +
 
 +
 
 +
{| cellpadding="2" border="1" cellspacing="0"
 +
|+ Integrated signal MPVs and ratios to value for horizontal, drift time < 11ns
 +
! colspan="1"| Horizontal MPV
 +
! colspan="1"| 30 degrees MPV
 +
! colspan="1"| 45 degrees MPV
 +
! colspan="1"| 30 degrees:horizontal
 +
! colspan="1"| 45 degrees:horizontal
 +
|-
 +
! Landau
 +
! Landau
 +
! Landau
 +
! Landau
 +
! Landau
 +
|-
 +
| 12970
 +
| 15850
 +
| 16217
 +
| 1.22 &plusmn; 0.02
 +
| 1.25 &plusmn; 0.03
 
|}
 
|}

Latest revision as of 11:28, 19 February 2013

Prototype at 2100V, 50/50 Ar/CO2

Tilted detectors
Tilted detectors


Prototype horizontal
Max amplitude
zoomed
Integration
zoomed
Prototype tilted 30deg
Max amplitude
zoomed
Integration
zoomed
Prototype tilted 45deg
Max amplitude
zoomed
Integration
zoomed

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

Hits closer than 1mm to the wire

Prototype horizontal, drift time < 11ns (1mm either side of the wire)
Max amplitude
zoomed
Integration
zoomed
Prototype tilted 30deg, drift time < 11ns (1mm either side of the wire)
Max amplitude
zoomed
Integration
zoomed
Prototype tilted 45deg, drift time < 11ns (1mm either side of the wire)
Max amplitude
zoomed
Integration
zoomed

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



50/50 premix gas, unfiltered, label reads analysis 49.1 CO2, so this is 51/49 Ar/CO2

2100V with prototype horizontal, scintillators vertical

Drift time histogram, central block of straws
Maximum amplitude histogram, central block of straws
Integration histogram, central block of straws

Estimated max drift time is 650ns
Repeating the tilted measurements just in case the scintillators moved slightly between measurements

Prototype tilted 0deg
Max amplitude
Integration
Prototype tilted 30deg
Max amplitude
Integration
Prototype tilted 45deg
Max amplitude
Integration

The paler lines are fits to a Landau dist, the darker lines are fits to a Landau-Gaussian convolution.


Amplitude MPVs and ratios to amplitude with prototype horizontal - old data in table still so ignore
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
383 403 394 419 378 413 1.03 1.04 0.99 1.02


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
8038 7994 9049 10413 9291 10591 1.13 ± 0.02 1.30 1.16 ± 0.02 1.32


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
Retrieved from "https://halldweb.jlab.org/wiki/index.php?title=CDC_tilted_detectors&oldid=44891"