diff --git a/Aramis-Intensity-Diagnostics/PBPS-Guide.md b/Aramis-Intensity-Diagnostics/PBPS-Guide.md new file mode 100644 index 0000000..e5716b6 --- /dev/null +++ b/Aramis-Intensity-Diagnostics/PBPS-Guide.md @@ -0,0 +1,10 @@ +## Operating principle +Single shot diagnostic to measure relative pulse energy and beam position. Back-scattered X-rays from a thin target (typically 50 nm silicon nitride) are measured by four photodiodes positioned above, below, left and right of the X-ray beam. + +Position data maintains FEL pointing, while single-shot pulse energy measurements are used to normalise experiment data. There is one PBPS in the front-end and two further devices per end station. + +## How to use + +1. Open photon diagnostics [web app](https://sf-photodiag.psi.ch/app) + +