``MONO``: The SASE 3 Monochromator ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Some documentation about the SASE 3 monochromator can be found in the following paper by Gerasimova et al., *Journal of Synchrotron Radiation* **29**, 1299-1308 (2022): `The soft X-ray monochromator at the SASE3 beamline of the European XFEL: from design to operation `_ Technical Report: `Diffraction Orders of the SASE3 Monochromator `_