Add documentation on transient reflectivity

doc/howtos.rst

@@ -18,6 +18,16 @@ Extracting peaks from digitizers
 --------------------------------
 * :doc:`How to extract peaks from digitizer traces <How to extract peaks from digitizer traces>`.
 
+
+Finding time overlap by transient reflectivity
+-----------------------------------------------------------------
+
+Transient reflectivity of the optical laser measured on a large bandgap material pumped by the FEL is often used at SCS to find the time overlap between the two beams. The example notebook 
+
+* :doc:`Transient reflectivity measurement <Transient reflectivity measurement>`
+
+shows how to analyze such data, including correcting the delay by the bunch arrival monitor (BAM).
+
 DSSC
 ----