Difference between revisions of "RF DeltaTs"
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| − | == TAGH == | + | = Summary = |
| − | [[Image:RFDeltaT_DeltaTs_TAGH. | + | * 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 | ||
| + | [[Image:RFDeltaT_DeltaTs_TAGH.pdf]] | ||
| + | <br style="clear:both;"/> | ||
| + | |||
| + | === Δt Characteristics === | ||
| + | * Time difference characteristics | ||
| + | ** Diagonal: Hits with similar time | ||
{| class="wikitable" | {| class="wikitable" | ||
| − | | [[Image:RFDeltaT_Mean_TAGH.png|thumb|left| | + | | [[Image:RFDeltaT_Mean_TAGH.png|thumb|left|500px|Shifted Mean]] |
| − | | [[Image:RFDeltaT_Resolution_TAGH.png|thumb|left| | + | | [[Image:RFDeltaT_Resolution_TAGH.png|thumb|left|500px|Resolution]] |
|- | |- | ||
| − | | [[Image:RFDeltaT_Skewness_TAGH.png|thumb|left| | + | | [[Image:RFDeltaT_Skewness_TAGH.png|thumb|left|500px|Skewness]] |
| − | | [[Image:RFDeltaT_Kurtosis_TAGH.png|thumb|left| | + | | [[Image:RFDeltaT_Kurtosis_TAGH.png|thumb|left|500px|Kurtosis]] |
|} | |} | ||
| − | + | = PSC = | |
| − | == | + | === Δt Distributions === |
| + | * Columns: earlier hit, rows: later hit | ||
| + | * Diagonal: Hits with similar time | ||
| + | [[Image:RFDeltaT_DeltaTs_PSC.pdf]] | ||
| + | <br style="clear:both;"/> | ||
| − | == TOF == | + | === Δt Characteristics === |
| + | * Time difference characteristics | ||
| + | ** Diagonal: Hits with similar time | ||
| + | {| class="wikitable" | ||
| + | | [[Image:RFDeltaT_Mean_PSC.png|thumb|left|500px|Shifted Mean]] | ||
| + | | [[Image:RFDeltaT_Resolution_PSC.png|thumb|left|500px|Resolution]] | ||
| + | |- | ||
| + | | [[Image:RFDeltaT_Skewness_PSC.png|thumb|left|500px|Skewness]] | ||
| + | | [[Image:RFDeltaT_Kurtosis_PSC.png|thumb|left|500px|Kurtosis]] | ||
| + | |} | ||
| + | |||
| + | = FDC = | ||
| + | |||
| + | === Δt Distributions === | ||
| + | * Columns: earlier hit, rows: later hit | ||
| + | * Diagonal: Hits with similar time | ||
| + | [[Image:RFDeltaT_DeltaTs_FDC.pdf]] | ||
| + | <br style="clear:both;"/> | ||
| + | |||
| + | === Δt Characteristics === | ||
| + | * Time difference characteristics | ||
| + | ** Diagonal: Hits with similar time | ||
| + | {| class="wikitable" | ||
| + | | [[Image:RFDeltaT_Mean_FDC.png|thumb|left|500px|Shifted Mean]] | ||
| + | | [[Image:RFDeltaT_Resolution_FDC.png|thumb|left|500px|Resolution]] | ||
| + | |- | ||
| + | | [[Image:RFDeltaT_Skewness_FDC.png|thumb|left|500px|Skewness]] | ||
| + | | [[Image:RFDeltaT_Kurtosis_FDC.png|thumb|left|500px|Kurtosis]] | ||
| + | |} | ||
| + | |||
| + | = TOF = | ||
| + | |||
| + | === Δt Distributions === | ||
| + | * Columns: earlier hit, rows: later hit | ||
| + | * Diagonal: Hits with similar time | ||
| + | [[Image:RFDeltaT_DeltaTs_TOF.pdf]] | ||
| + | <br style="clear:both;"/> | ||
| + | |||
| + | === Δt Characteristics === | ||
| + | * Time difference characteristics | ||
| + | ** Diagonal: Hits with similar time | ||
| + | {| class="wikitable" | ||
| + | | [[Image:RFDeltaT_Mean_TOF.png|thumb|left|500px|Shifted Mean]] | ||
| + | | [[Image:RFDeltaT_Resolution_TOF.png|thumb|left|500px|Resolution]] | ||
| + | |- | ||
| + | | [[Image:RFDeltaT_Skewness_TOF.png|thumb|left|500px|Skewness]] | ||
| + | | [[Image:RFDeltaT_Kurtosis_TOF.png|thumb|left|500px|Kurtosis]] | ||
| + | |} | ||
Latest revision as of 10:34, 11 November 2016
Contents
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
PSC
Δt Distributions
- Columns: earlier hit, rows: later hit
- Diagonal: Hits with similar time
Δt Characteristics
- Time difference characteristics
- Diagonal: Hits with similar time
FDC
Δt Distributions
- Columns: earlier hit, rows: later hit
- Diagonal: Hits with similar time
Δt Characteristics
- Time difference characteristics
- Diagonal: Hits with similar time
TOF
Δt Distributions
- Columns: earlier hit, rows: later hit
- Diagonal: Hits with similar time
Δt Characteristics
- Time difference characteristics
- Diagonal: Hits with similar time
