Difference between revisions of "RF DeltaTs"

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* Columns: earlier hit, rows: later hit
 
* Columns: earlier hit, rows: later hit
 
* Diagonal: Hits with similar time
 
* Diagonal: Hits with similar time
−
[[Image:RFDeltaT_DeltaTs_TAGH.pdf|Attached DeltaT PDF]]
+
[[Image:RFDeltaT_DeltaTs_TAGH.pdf]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
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** Diagonal: Hits with similar time
 
** Diagonal: Hits with similar time
 
{| class="wikitable"
 
{| class="wikitable"
−
| [[Image:RFDeltaT_Mean_TAGH.png|thumb|left|700px|Mean]]
+
| [[Image:RFDeltaT_Mean_TAGH.png|thumb|left|500px|Shifted Mean]]
−
| [[Image:RFDeltaT_Resolution_TAGH.png|thumb|left|700px|Resolution]]
+
| [[Image:RFDeltaT_Resolution_TAGH.png|thumb|left|500px|Resolution]]
 
|-
 
|-
−
| [[Image:RFDeltaT_Skewness_TAGH.png|thumb|left|700px|Skewness]]
+
| [[Image:RFDeltaT_Skewness_TAGH.png|thumb|left|500px|Skewness]]
−
| [[Image:RFDeltaT_Kurtosis_TAGH.png|thumb|left|700px|Kurtosis]]
+
| [[Image:RFDeltaT_Kurtosis_TAGH.png|thumb|left|500px|Kurtosis]]
 
|}
 
|}
  
 
= PSC =
 
= PSC =
  
−
* Time difference distributions (columns: earlier hit, rows: later hit)
+
=== &Delta;t Distributions ===
−
** Diagonal: Hits with similar times
+
* Columns: earlier hit, rows: later hit
−
[[Image:RFDeltaT_DeltaTs_PSC.png|thumb|left|1200px|Delta-t's]]
+
* Diagonal: Hits with similar time
 +
[[Image:RFDeltaT_DeltaTs_PSC.pdf]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
 +
=== &Delta;t Characteristics ===
 
* Time difference characteristics
 
* Time difference characteristics
 +
** Diagonal: Hits with similar time
 
{| class="wikitable"
 
{| class="wikitable"
−
| [[Image:RFDeltaT_Mean_PSC.png|thumb|left|700px|Mean]]
+
| [[Image:RFDeltaT_Mean_PSC.png|thumb|left|500px|Shifted Mean]]
−
| [[Image:RFDeltaT_Resolution_PSC.png|thumb|left|700px|Resolution]]
+
| [[Image:RFDeltaT_Resolution_PSC.png|thumb|left|500px|Resolution]]
 
|-
 
|-
−
| [[Image:RFDeltaT_Skewness_PSC.png|thumb|left|700px|Skewness]]
+
| [[Image:RFDeltaT_Skewness_PSC.png|thumb|left|500px|Skewness]]
−
| [[Image:RFDeltaT_Kurtosis_PSC.png|thumb|left|700px|Kurtosis]]
+
| [[Image:RFDeltaT_Kurtosis_PSC.png|thumb|left|500px|Kurtosis]]
 
|}
 
|}
  
 
= FDC =
 
= FDC =
  
−
* Time difference distributions (columns: earlier hit, rows: later hit)
+
=== &Delta;t Distributions ===
−
** Diagonal: Hits with similar time
+
* Columns: earlier hit, rows: later hit
−
[[Image:RFDeltaT_DeltaTs_FDC.png|thumb|left|1200px|Delta-t's]]
+
* Diagonal: Hits with similar time
 +
[[Image:RFDeltaT_DeltaTs_FDC.pdf]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
 +
=== &Delta;t Characteristics ===
 
* Time difference characteristics
 
* Time difference characteristics
 +
** Diagonal: Hits with similar time
 
{| class="wikitable"
 
{| class="wikitable"
−
| [[Image:RFDeltaT_Mean_FDC.png|thumb|left|700px|Mean]]
+
| [[Image:RFDeltaT_Mean_FDC.png|thumb|left|500px|Shifted Mean]]
−
| [[Image:RFDeltaT_Resolution_FDC.png|thumb|left|700px|Resolution]]
+
| [[Image:RFDeltaT_Resolution_FDC.png|thumb|left|500px|Resolution]]
 
|-
 
|-
−
| [[Image:RFDeltaT_Skewness_FDC.png|thumb|left|700px|Skewness]]
+
| [[Image:RFDeltaT_Skewness_FDC.png|thumb|left|500px|Skewness]]
−
| [[Image:RFDeltaT_Kurtosis_FDC.png|thumb|left|700px|Kurtosis]]
+
| [[Image:RFDeltaT_Kurtosis_FDC.png|thumb|left|500px|Kurtosis]]
 
|}
 
|}
  
 
= TOF =
 
= TOF =
  
−
* Time difference distributions (columns: earlier hit, rows: later hit)
+
=== &Delta;t Distributions ===
−
** Diagonal: Hits with similar time
+
* Columns: earlier hit, rows: later hit
−
[[Image:RFDeltaT_DeltaTs_TOF.png|thumb|left|1200px|Delta-t's]]
+
* Diagonal: Hits with similar time
 +
[[Image:RFDeltaT_DeltaTs_TOF.pdf]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
 +
=== &Delta;t Characteristics ===
 
* Time difference characteristics
 
* Time difference characteristics
 +
** Diagonal: Hits with similar time
 
{| class="wikitable"
 
{| class="wikitable"
−
| [[Image:RFDeltaT_Mean_TOF.png|thumb|left|700px|Mean]]
+
| [[Image:RFDeltaT_Mean_TOF.png|thumb|left|500px|Shifted Mean]]
−
| [[Image:RFDeltaT_Resolution_TOF.png|thumb|left|700px|Resolution]]
+
| [[Image:RFDeltaT_Resolution_TOF.png|thumb|left|500px|Resolution]]
 
|-
 
|-
−
| [[Image:RFDeltaT_Skewness_TOF.png|thumb|left|700px|Skewness]]
+
| [[Image:RFDeltaT_Skewness_TOF.png|thumb|left|500px|Skewness]]
−
| [[Image:RFDeltaT_Kurtosis_TOF.png|thumb|left|700px|Kurtosis]]
+
| [[Image:RFDeltaT_Kurtosis_TOF.png|thumb|left|500px|Kurtosis]]
 
|}
 
|}

Latest revision as of 10:34, 11 November 2016

Summary

  • Within each detector system, the time differences between the different RF signals in the event are histogrammed.
  • The hit # is not technically the Nth-hit in the event. Instead, it is calculated from the time.
    • For example, since the RF signal arrives every 2.004 ns and is read out 1/128 times, the second hit should be ~256.5 ns later than the first, the third ~513ns after the first, etc. Thus, the hit # is determined from the delta-t. This is because sometimes a hit is missing.
    • When plotting the mean of the time differences, the means are shifted in time such that they SHOULD line up at zero. E.g. if 2nd hit - 1st hit: expect to be centered at ~256.5 ns. So ~256.5ns is subtracted from the mean.
  • Note that sometimes there are two hits that roughly ~76ns apart from each other. They are identified as being the same hit #. The time difference between these is shown on the diagonal of the time difference distribution plots.
    • This does not happen for the TOF (CAEN), only the other systems (F1TDCs).
    • The means/resolutions/etc. of these hits are not shown in the characteristics summary histograms, as their values tend to dominate the other bins.

TAGH

Δt Distributions

  • Columns: earlier hit, rows: later hit
  • Diagonal: Hits with similar time

File:RFDeltaT DeltaTs TAGH.pdf

Δt Characteristics

  • Time difference characteristics
    • Diagonal: Hits with similar time
Shifted Mean
Resolution
Skewness
Kurtosis

PSC

Δt Distributions

  • Columns: earlier hit, rows: later hit
  • Diagonal: Hits with similar time

File:RFDeltaT DeltaTs PSC.pdf

Δt Characteristics

  • Time difference characteristics
    • Diagonal: Hits with similar time
Shifted Mean
Resolution
Skewness
Kurtosis

FDC

Δt Distributions

  • Columns: earlier hit, rows: later hit
  • Diagonal: Hits with similar time

File:RFDeltaT DeltaTs FDC.pdf

Δt Characteristics

  • Time difference characteristics
    • Diagonal: Hits with similar time
Shifted Mean
Resolution
Skewness
Kurtosis

TOF

Δt Distributions

  • Columns: earlier hit, rows: later hit
  • Diagonal: Hits with similar time

File:RFDeltaT DeltaTs TOF.pdf

Δt Characteristics

  • Time difference characteristics
    • Diagonal: Hits with similar time
Shifted Mean
Resolution
Skewness
Kurtosis
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