PES detector

Some mnemonics and functions related to the Photo-Electron Spectrometer (PES). Documentation in the form of a notebook.

src/toolbox_scs/detectors/pes.py

@@ -126,7 +126,8 @@ def get_pes_tof(run, mnemonics=None, merge_with=None,
         ds = ds.rename({'PESsampleId': 'time_ns'})
         ds = ds.assign_coords({'time_ns': time_ns})
     if bool(merge_with):
-        ds = merge_with.merge(ds, join='inner')
+        ds = merge_with.drop(to_process,
+                             errors='ignore').merge(ds, join='inner')
 
     return ds