Difference between revisions of "March 2015 runs @ IAC"

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[[File:Snip20150815 29.png| 500 px]]
 
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Latest revision as of 10:51, 27 May 2016

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DU runs

TDC spectrum

DTC

Target in vs. target out

Gamma peak is revealed by comparing target in and target out runs.

Gammas(2).jpg

ToF

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

target_in_vs_target_out_ToF

ToF.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)=0.708 e^{-0.884 E^'}\sinh \left(\sqrt{E^'}\right)[/math]

Watt.jpg

Second Hit

Odd TDC spectrum in the second hit:

Snip20150815 28.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 gamma events:

Snip20150815 29.png


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