JB Anaysis: Difference between revisions
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<math>Ce^{-aE^'}\sinh\left(\sqrt{bE^'}\right)=0.708 e^{-0.884 E^'}\sinh \left(\sqrt{E^'}\right)</math> | <math>Ce^{-aE^'}\sinh\left(\sqrt{bE^'}\right)=0.708 e^{-0.884 E^'}\sinh \left(\sqrt{E^'}\right)</math> | ||
[[File:Watt(2).png| | [[File:Watt(2).png| 700 px]] | ||
[[File:EngvsWqatt.jpg | 1000 px]] | [[File:EngvsWqatt.jpg | 1000 px]] | ||
Revision as of 00:17, 15 August 2015
DU runs
TDC spectrum
Detector 1
Detector 2
Detector 3
Detector 4
Target in vs. target out
Gamma peak is revealed by comparing target in and target out runs.
(open the file to see it clearly)
ToF
[math]\displaystyle{ Neutron TOF=\frac{PMT_{top}+PMT_{bottom}}{2}-t_{\gamma peak}+\gamma_{TOF} }[/math]
Energy
Neutron Energy:
[math]\displaystyle{ \frac{1}{2}m_{n}\left(\frac{in}{ns}\right)^2=3.372\left(\frac{42}{t}\right)^2 MeV }[/math]
Watt distribution:
[math]\displaystyle{ Ce^{-aE^'}\sinh\left(\sqrt{bE^'}\right)=0.708 e^{-0.884 E^'}\sinh \left(\sqrt{E^'}\right) }[/math]
.png)
Second Hit
Odd TDC spectrum in the second hit:
Applying cuts based on TDC difference could help:
Opening angles
Uncorrelated distribution from detectors 1-4:
Analyzing 5653446 pulses from DU runs, I was able to find 349 two-neutron events in detectors 1-4.
As a test I did the same for gamma events:
