UE56-1_ZPM
Soft X-ray fs-to-ps pulsed undulator radiation variable polarization with Zone Plate Mono for FEMTOS
The ZPM-monochromator was particularly designed and commissioned according to user requirements to support optical-pump- soft x-ray probe experiments at the FemtoSpex facility at the UE56-1. Owing to the principles of generating 100 fs x-ray pulses from a storage ring [1] one needs optics of highest possible transmission up to 21%. A successful approach has been a single element monochromator based on Reflection Zone Plates [2]. The current design as depicted in Figure 1 (right) consists of 9 lenses that enable a working range from 410 to 1333 eV at moderate spectral resolutions of E/DE= 500 or, in one case E/DE = 2000, at 713 eV. The optics is tailored to minimize pulse elongations to 30 fs preserving the polarization properties of the elliptical light from the undulator.
Applicable station(s)
Temperature range | Pressure Range | |
---|---|---|
FEMTOSPEX-DynaMax |
Beamline data | |
---|---|
Segment | H11 |
Location (Pillar) | 12.2 |
Source | UE56-1 slicing (Elliptical Undulator) |
Monochromator | Reflection Zone Plate Arrray (RZPA) |
Energy range | 410 - 1330 eV |
Energy resolution | 500/2000 |
Flux | 1·106ph/sec/0.1%BW@6kHz (100 fs pulses) |
Polarisation | variable |
Divergence horizontal | 0.2 mrad |
Divergence vertical | 0.1 mrad |
Focus size (hor. x vert.) | 140µmx40µm(slit) (hxv) |
User endstation | no |
Distance Focus/last valve | 800 mm |
Height Focus/floor level | 1763 mm |
Beam availability | 12h/d |
Phone | -- |
References / Latest Publications
[1] Khan, S., Holldack, K., Kachel, T., Mitzner, R. & Quast, T., Phys. Rev. Lett. 97, 074801 (2006).
[2] Brzhezinskaya, M, et al. Journal of Synchrotron Radiation 20, 522-530 (2013).
[3] Stamm, C. et al., Nature Materials 6, 740–743 (2007).
[4] Boeglin, C. et al., Nature 465, 458–462 (2010).
[5] Wietstruk, M. et al., Phys. Rev. Lett. 106, 127401 (2011).
[6] Radu, I. et al., Nature 472, 205–209 (2011).
[7] Eschenlohr, A. et al., Nature Materials 12, 332–336 (2013).
[8] Bergerard, N. et al. Nature Communications, 5, 3466, doi:10.1038/ncomms4466.