Take some fluorescence hdf files with the xspress3

GDA reads the data out of the xspress3 directly from PVs then writes it to it's own file format. However, the xspress3 IOC has the ability to write HDF files, which we would like to use. The first step in doing this is spending some time on the beamline manually triggering the fluorescence detector and getting an example file out. This can then be passed to analysis so that they can update their pipelines to work for it.

## Acceptance Criteria
* Some time is spent at the beamline with the fluo detector and a HDF file is produced
* The sequence required to produce this is documented on a ticket, with the idea of automating it
* The resultant file is passed to analysis