1. Test Pulse Analysis Carl Goodrich 7/31/07

2. Test Pulse The Test Pulse was injected into channels 4 and 23 –We expect channels 3, 4, 5, and 22, 23, 24 to be more noisy than in Random Trigger runs –We exclude these channels from Test Pulse noise analysis

3. Random Trigger HP1 Total Noise- Electronic IDCommon Mode Noise- Electronic ID Common Mode Subtracted Noise- Software ID average per strip, for all modules average per link, for all modules average per channel, for all modules

4. Test Pulse HP1 Total Noise- Electronic IDCommon Mode Noise- Electronic ID Common Mode Subtracted Noise- Software ID average per strip, for all modules average per link, for all modules average per channel, for all modules

5. Test Pulse HP2 Total Noise- Electronic IDCommon Mode Noise- Electronic ID Common Mode Subtracted Noise- Software ID average per strip, for all modules average per link, for all modules average per channel, for all modules

6. What’s Wrong? Problem with Test Pulse HP2? Signal/Noise Ratio: –Expected to be between 15 and 20 –Average S/N for HP1: ~3 –Average S/N for HP2: ~19 Problem with Test Pulse in HP1 data So why the noisy channels in HP2?

7. Single HP2 Test Pulse Run- TELL1 51 (1) Total noise of channels, no average mean = average of Test Pulse RT mean = average of Random Trigger RT mean = 2.08RT mean = 2.19 RT mean = 2.23 RT mean = 2.25 RT mean = 2.13 RT mean = 2.15

8. Single HP2 Test Pulse Run- TELL1 51 (2) Total noise of channels, no average mean = average of Test Pulse RT mean = average of Random Trigger RT mean = 2.13 RT mean = 2.11 RT mean = 2.22 RT mean = 2.11RT mean = 2.15 RT mean = 2.20