U41-TXM
U41-TXM
This high flux beamline with a plane grating monochromator was designed especially for X-ray microscopy endstations. It is dedicated to X-ray microscopy applications and hosts the HZB X-ray microscope as a fixed endstation.
| Station data | |
|---|---|
| Temperature range | 100 K to room temperature |
| Pressure range | samples under vacuum |
| More details | XM - X-ray Microscopy |
| Beamline data | |
| Segment | L06 |
| Location (Pillar) | 7.2 |
| Source | U41 (planar undulator) |
| Monochromator | PGM1 equipped with a 800 l/mm (soft X-rays) & 2000 l/mm (tender X-rays) |
| Energy range | 180 - 1800 eV (soft X-ray range) & 700 - 2800 eV (tender X-ray range) |
| Energy resolution | up to 10000 |
| Flux | up to 4·1012 photons/sec @100 mA and 20 μm exit slit for cff = 2.25 directly after the exit slit |
| Polarisation | horizontal |
| Divergence horizontal | photon energy dependent: 0.2 - 0.1 mrad |
| Divergence vertical | photon energy dependent: 0.66 - 0.25 mrad |
| Focus size (hor. x vert.) | 220 µm in exit slit |
| User endstation | not possible |
| Distance Focus/last valve | - focus at exit slit position - mm |
| Height Focus/floor level | 1417 mm |
| Beam availability | 12h/d |
| Phone | +49 30 8062 12110 |
The optical design of the HZB full-field TXM (unchanged) at the new BESSY II undulator beamline U41-L06-PGM1 (section L06) allows high spectral resolution of up to E/ΔE = 10000, 25 nm (half-pitch) spatial resolution and field of views in the range of 10-15 µm. A plane grating monochromator with a 800 l/mm grating provides the necessary high photon flux and in addition an energy resolution high enough for NEXAFS applications. The X-ray condenser (ellipsoidal shaped capillary) illuminates the object while the high resolving zone plate objective forms the enlarged image onto the CCD.
Application
This is a dedicated beamline for X-ray microscopy allowing nano-tomography and nano-spectroscopy (NEXAFS).