diff --git a/Aramis-Intensity-Diagnostics/PBPS-Guide.md b/Aramis-Intensity-Diagnostics/PBPS-Guide.md index 21a8dcc..c87f776 100644 --- a/Aramis-Intensity-Diagnostics/PBPS-Guide.md +++ b/Aramis-Intensity-Diagnostics/PBPS-Guide.md @@ -6,5 +6,13 @@ Position data maintains FEL pointing, while single-shot pulse energy measurement ## How to use 1. Open photon diagnostics [web app](https://sf-photodiag.psi.ch/app) +2. Under Position/calibration tabs,s elect device from drop down menu 1 +3. Select target from drop down menu 2 - default target is 50nm Si3N4 +4. Press calibrate +The calibration procedure normalizes the response of the 4 diodes, then scans the device horizontally and vertically over the FEL beam to calibrate the position response. + +Once completed (approx 1 minute) the plots are updated with the calibration response. Plotted on the x axis is the device motor position (horizontal - left plot and vertical - right plot) and on the y axis is plotted the normalized horizontal or vertical diode pair response. For a good setup the plot should be a straight line through the 3 data points. + +If you are happy with the calibration, press the "Push results/elog" button where the new calibration data is sent to the required data processing pipelines. After an automated restart (~30 seconds) both PV and BS position and intensity data will be calculated with the new calibration. An elog entry is made detailing the calibration data. \ No newline at end of file