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Long-Term Noise Scan Test Results and Future Plans for MPOD Setup on 16/12/2013

This report summarizes the long-term noise scan test conducted on an MPOD setup by Johan M. and Vito P. on December 16, 2013. The test involved running noise scans every minute for 24 hours with high voltage enabled but no active gas. Results indicate that the mean variation of noise is under 1mV over 24 hours. A few runs showed deviations, suggesting potential external noise sources. Future plans include more comprehensive testing starting in January, and initial outcomes do not indicate significant issues with the apparatus.

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Long-Term Noise Scan Test Results and Future Plans for MPOD Setup on 16/12/2013

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  1. Log term test Johan M., Vito P. 16/12/2013

  2. Setup MPOD 1 SRB (4chs) 30 COVERs

  3. The Test • The test consists to repeat every minute a noise scan over 24h. • HV on but no active gas

  4. The Test • The test consists to repeat every minute a noise scan over 24h. • HV on but no active gas

  5. Noise Scan Results In order to study the behavior of our electronics in time we ar computing the weighted mean and sigma of each channel versus the time.

  6. Noise Scan Results (Sigmas)

  7. Noise Scan Results (Means)

  8. Noise Scan Results In order to study the behavior of our electronics in time we are computing the weighted mean and sigma of each channel versus the time. The mean variation is less than 1mV over 24h (no temperature or humidity monitoring).

  9. Noise Scan Results In order to study the behavior of our electronics in time we ar computing the weighted mean and sigma of each channel versus the time. The mean variation is less than 1mV over 24h (no temperature or humidity monitoring). Few (~8/~1800) runs are clearly deviating from the collective behavior, but inspecting them…

  10. “Failing” Noise Scans

  11. “Failing” Noise Scans

  12. “Failing” Noise Scans

  13. Future Plans • The long term test we performed up to now does not suggest problems in our apparatus. • Possible external sources of noise have been found (to be confirmed). • Possible baseline variations. • The apparatus Johan prepared for the test is ready to be extensively used. • A fully comprehensive test will be performed from January.

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