Timing Uncertainty Analysis Update
SUNY Geneseo
Physics Department
Geneseo, NY
March 2017
1
3-10-17_Cs137_HPGe and Scint
2
Set Up
3
Scope Signals
4
Scope Traces
5
Getting Average Parameters
EMG has five parameters
1. Amplitude
(Allow to Vary)
2. Centroid of Gaussian
(Allow to Vary)
3. Decay of exponential
(Obtain through average)
4. Sigma of Gaussian
(Obtain through average)
5. Background offset
(Allow to Vary)
6
Ch1 Scintillator
7
Sigma and Tau
𝜎 = 2.03 ± 0.13 𝑛𝑠
Fit a total of 500 waveforms
𝜏 = 7.69 ± 0.35 𝑛𝑠
Sigma
Tau
8
Ch2 HPGe
9
Sigma and Tau
𝜎 = 1.832 ± 0.025 𝑛𝑠
Fit a total of 166 waveforms
𝜏 = 0.215 ± 0.050 𝑛𝑠
Sigma
Tau
10
Histogram of Time Difference
Δ𝑇 = 48.1 ± 11.1 𝑛𝑠
Fit a total of 166 waveforms
11
Histogram of Time Difference- v2
Δ𝑇 = 43.4 ± 3.7 𝑛𝑠
Fit a total of 130 waveforms
12