Proton Calorimetry/Meetings/2021/02/03

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(Saad Shaikh)
(Saad Shaikh)
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*Further work on DAQ framework:
*Further work on DAQ framework:
**DAQ script sets full-scale range and number of DDC232 boards and then saves X number of measurements per file.
**DAQ script sets full-scale range and number of DDC232 boards and then saves X number of measurements per file.
-
**Trade-off between DAQ rate and refresh rate of display: averaging/plotting scripts can only access closed files and best DAQ rate is achieved by saving data to single file without closing.
+
**Trade-off between DAQ rate and refresh rate of display: averaging/plotting scripts can only access closed files and best DAQ rate is achieved by saving data to single file without closing. Reading more boards also slows down DAQ.
**WriteCSV waits for a new file to appear, averages all measurements in the file and then updates a single-line CSV file at 50Hz.
**WriteCSV waits for a new file to appear, averages all measurements in the file and then updates a single-line CSV file at 50Hz.
**Local live plot reads last line in each new file to plot. No averaging in order to reduce latency between DAQ.
**Local live plot reads last line in each new file to plot. No averaging in order to reduce latency between DAQ.

Revision as of 18:17, 3 February 2021

Contents

Minutes for UCL Proton Calorimetry Meetings, 3rd February

Present

Simon Jolly, Raffaella Radogna, Saad Shaikh, Fern Pannell

Raffaella Radogna

Saad Shaikh

  • Further bug fixes and work on USB interface: now able to dynamically set number of DDC232 modules remotely.
    • Will update UART FPGA code to also allow setting number of DDC232 modules remotely.
  • Further work on DAQ framework:
    • DAQ script sets full-scale range and number of DDC232 boards and then saves X number of measurements per file.
    • Trade-off between DAQ rate and refresh rate of display: averaging/plotting scripts can only access closed files and best DAQ rate is achieved by saving data to single file without closing. Reading more boards also slows down DAQ.
    • WriteCSV waits for a new file to appear, averages all measurements in the file and then updates a single-line CSV file at 50Hz.
    • Local live plot reads last line in each new file to plot. No averaging in order to reduce latency between DAQ.
  • Features to implement:
    • Replace number of measurements per file with a time spent on each file, in order to lock-in the rate at which new files appear.
    • At FTDI level, scale photodiode data and add real Bragg curve. Add fitting routine to writeCSV or update liveFit to perform averaging and fitting.

Fern Pannell

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