Latest revision as of 06:22, 5 February 2009

Shielding and Cosmic Ray Counts

We used detector C. HV is on 1360 Volts.

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-=Lead Between Two Detectors=
+=Shielding and Cosmic Ray Counts=
-In this test, we put some layers (thickness) of lead between two detectors to test how much lead to we need to shield comics rays. We will do coincidence of signals from two detectors. If we can see coincident signal, that means cosmic rays can go through those
+We used detector C. HV is on 1360 Volts.
-layers of lead between them.  We will start from 2 layers of lead, then increase by 1 layer.
+{| border="1" cellpadding="20" cellspacing="0"
+|-
+|Layers of lead
+|counts/5min
+|-
+|2||250
+|-
+|4 ||  223
+|-
+| ||
+|-
+| ||
+|-
+|}
+[http://wiki.iac.isu.edu/index.php/PhotoFission_with_Polarized_Photons_from_HRRL Go Back]