Difference between revisions of "05/13/2011 timing test"

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Below is the plot of measured time as function of distances:
 
Below is the plot of measured time as function of distances:
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{| border="0" cellspacing="0" style="text-align: center; width: 1050px; height: 100px;"
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|[[File:Timing 1 10.png | 500px]] || [[File:Timing 11 30.png | 500px]]
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|-
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!colspan="6" | File:Timing 1 30.png
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|}
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[[File:Timing 03.png | 800px]]
 
[[File:Timing 03.png | 800px]]

Revision as of 04:03, 17 May 2011

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Set up like that:

Detector1.png


The voltages, thresholds and widths are:

PMT voltage, V threshold, mV discr. width, ns
PS1 -1000 -80 50
PS1 -1000 -80 50
n's -1500 -200 10



Let's do the timing test. The distances are between PS1+PS2 and n's PMT. The time is time difference between PS1(PS2) and n's detector signals

Tbl timing 1 30.png


As the distance becomes 10 cm and less the coincidence rate becomes very low. I have:

▫ 11 coincidence for 98 min (10 cm)
▫ 0 coincidence for 10 min


Below is the plot of measured time as function of distances:

Timing 1 10.png Timing 11 30.png
File:Timing 1 30.png


Timing 03.png

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