Difference between revisions of "Neutron Time of Flight Test"
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| Line 15: | Line 15: | ||
|no blocks | |no blocks | ||
|background | |background | ||
| + | |background with detector shielded | ||
|- | |- | ||
|test 1 counts | |test 1 counts | ||
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|11793 | |11793 | ||
|1620 | |1620 | ||
| + | |1314 | ||
|- | |- | ||
|test 2 counts | |test 2 counts | ||
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|11694 | |11694 | ||
|1648 | |1648 | ||
| + | |1336 | ||
|- | |- | ||
|test 3 counts | |test 3 counts | ||
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|11872 | |11872 | ||
|1629 | |1629 | ||
| + | |1352 | ||
|- | |- | ||
|averages | |averages | ||
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|11786 | |11786 | ||
|1632 | |1632 | ||
| + | |1334 | ||
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Revision as of 14:44, 19 September 2008
Determining Neutron Time of Flight
This test included one detector and a collimated Cf-252 source. The detector was placed 16 inches away from the source collimator. Tests were performed with various thicknesses of poly in between the two. Each count was 5 minutes long and three counts were taken for each test.
| setup | 1 block (4") | 2 blocks (8") | 3 blocks (12") | 4 blocks (16") | no blocks | background | background with detector shielded |
| test 1 counts | 7180 | 5142 | 3945 | 3235 | 11793 | 1620 | 1314 |
| test 2 counts | 7291 | 5213 | 3994 | 3084 | 11694 | 1648 | 1336 |
| test 3 counts | 7319 | 5205 | 4014 | 3150 | 11872 | 1629 | 1352 |
| averages | 7263 | 5187 | 3984 | 3156 | 11786 | 1632 | 1334 |