Difference between revisions of "JB Anaysis"

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As a test I did the same for only gamma events:
 
As a test I did the same for only gamma events:
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[[File:Gammacorrelation.png| 500 px]]
 
[[File:Gammacorrelation.png| 500 px]]

Revision as of 14:07, 30 July 2015

DU runs

Neutron-Gamma Seperation

Detector 1

Det1TDC.png

Detector 2

Det2tdc.png

Detector 3

Det3DTC.png

Detector 4

Det4TDc.png

Target in vs. target out

Gamma peak is revealed by comparing target in and target out runs. (open the file to see it clearly) Det4Gammas.png

2nCor_44#Analysis

ToF

[math]Neutron TOF=\frac{PMT_{top}+PMT_{bottom}}{2}-t_{\gamma peak}+\gamma_{TOF}[/math] Det4ToF.png

Energy

Neutron Energy=[math]\frac{1}{2}m_{n}\left(\frac{in}{ns}\right)^2=3.372\left(\frac{42}{t}\right)^2 MeV[/math]

Watt distribution: [math]Ce^{-aE^'}sinh\left(\sqrt{bE^'}\right)[/math]

DEt4NeutronEnergy.png

EngvsWqatt.jpg WattVsEng.png

Second Hit

Odd TDC spectrum in the second hit:

SecondHit1.png

Applying cuts based on TDC difference could help:

SecondHit.png

Opening angles

Uncorrelated distribution from detectors 1-4:

Snip20150729 3.png

Analyzing 5653446 pulses from DU runs, I was able to find 349 two-neutron events in detectors 1-4. CorrOverUncorR.png

As a test I did the same for only gamma events:

Gammacorrelation.png

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