Difference between revisions of "August 17, 2007 - Cosmic Telescope"
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| − | The Threshold on the Bottom Scintillator was | + | The Threshold on the Bottom Scintillator was set at 175 mV for this experiment while the top was left at 225mV. |
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| − | [[Image: | + | [[Image:rePlateau of Bottom.jpg]] |
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| + | As the data shows, this threshold is too low. In this threshold area, we are picking up a lot of noise which gives up innaccurate readings. | ||
Latest revision as of 20:00, 16 October 2007
The Threshold on the Bottom Scintillator was set at 175 mV for this experiment while the top was left at 225mV.
| Plateau of Bottom Scintillator | |||||
|---|---|---|---|---|---|
| Time | HV on top scint. | HV on bottom scint. | Singles Count (on top) | Coinc. Counts | Coinc. per minute |
| 30 min | 1300 | 1300 | 3558 | 6 | 2.8 |
| 30 min | 1300 | 1250 | 4966 | 61 | 2.03 |
| 30 min | 1300 | 1200 | 4547 | 77 | 2.57 |
| 30 min | 1300 | 1150 | 4239 | 34 | 1.13 |
| 30 min | 1300 | 1100 | 4398 | 6 | 0.267 |
As the data shows, this threshold is too low. In this threshold area, we are picking up a lot of noise which gives up innaccurate readings.