ISU KLM meeting

Tuesday 25 Jul 2023, 20:00 → 22:05 America/Chicago

SpeakApp:  https://speakapp.link/to/NOunww

Password: KLM@ISU

1 Board development

2 Lab bubbler

In the picture, the left is bad quality signal. The right is a good-quality signal. Notice the peaks are very well-defined. When we have good-quality signals, the bubble frequencies are accurate, while for bad-quality signals, it is difficult to describe a threshold to get proper bubbling frequency reading.

P.S.: It might look like it is a good idea to define a threshold for the trough to count signal, but the trough is also not well-defined; it is a coincidence that it looks good in the pictures above.

3 SBC code development (signal recognition)

• Calibrated the output of ADC
  • binary output from ADC is converted to volts using ADC's internal calibration 
• testing board to take to KEK
• trying to make the PGA inside ADC work
  • if it works, the voltage least count will be 1.25 mV instead of the default 6 mV

4 SBC code development (interface)

5 Monitoring and archiving

6 Integration into Belle II

7 Other news from KEK

8 AOB