U41-TXM

U41-TXM

User operation of TXM starts with the second semester 2017

The new designed PGM1 beamline for the TXM endstation at section L06 is under commissioning and uses again the undulator U41 which was moved from section L12 to L06. User operation will start with the 2017-II beamtime allocation period.

This beamline is dedicated to X-ray microscopy applications and hosts the X-ray microscope.

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 provides the high energy resolution. The X-ray condenser (ellipsoidal shaped capillary) illuminates the object while the high resolving zone plate objective forms the enlarged image onto the CCD.

Details about the TXM itself can be found in the list of stations under XM - X-ray microscopy.

X-ray optical design of the new XM-beamline at section L06

X-ray optical design of the new XM-beamline at section L06

View on the beamline and X-ray microscope (new location at L06)

View on the beamline and X-ray microscope (new location at L06)

Measured flux curve

Measured flux curve

Measured energy resolution (Nitrogen-K-edge) for 1st and 2nd grating diffraction order

Measured energy resolution (Nitrogen-K-edge) for 1st and 2nd grating diffraction order

List of publications
Beamline data
Segment L06
Location (Pillar) 7.2
Source U41
Monochromator PGM1
Energy range 250 - 1500 eV
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
Distance Focus/last valve focus at exit slit position mm
Height Focus/floor level 1417 mm
Free photon beam available no
Fixed end station yes
Beam available 12h/d
Phone +49 30 8062 12110

Application

This is a dedicated beamline for X-ray microscopy allowing nano-tomography and nano-spectroscopy.