UE56-1_PGM

UE56-1_PGM Undulator PGM fs variable polarisation

Soft x-ray beamline for flexible end stations with vertical horizontal and elliptical polarization covering the range of ~100 - 1400 eV with an x-ray spot size of approximately 80 µm (horizontal). This beamline is part of FemtoSpeX which allows to perform femtosecond time-resolved experiments using the slicing facility. One can also do picosecond measurements using the high resolution (1200l/mm) grating. The ump laser system can run at up to 6kHz but also at reduced repetition rates of 3kHz and 1.5kHz. The system is delivering 800nm laser pulses of about 100fs length with a power of up to ~10W. For 800nm and the 2nd harmonic, i.e. 400nm, variabel attentuation and polarisation is available. For the tunable wavlengths created by the OPA we can currently only offer fixed attenuations by using ND filters.

Optisches Layout der Beamline

Optisches Layout der Beamline

Flusskurven für das 1200l/mm Gitter

Flusskurven für das 1200l/mm Gitter

Beispielhafte Trennung des PPRE Bunches

Beispielhafte Trennung des PPRE Bunches

Wellenlängen des OPA

Wellenlängen des OPA

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Beamline data
Segment H11
Location (Pillar) 12.2
Source UE56-1 (Elliptical Undulator)
Monochromator PGM
Energy range 60 - 1300 eV
Energy resolution > 100,000 at 64 eV, > 20,000 at 400 eV
Flux 2.5·1011
Polarisation • linear horizontal vertical
• circular
Divergence horizontal 1 mrad
Divergence vertical 1 mrad
Focus size (hor. x vert.) 85 µm (hor) x 15 µm (vert, dep. on exit slit)
Fixed endstation no
Flexible endstation(s)

Transmission NEXAFS, Resonant Scattering, SolidFlexRIXS, FEMTOSPEX-Scattering, FEMTOSPEX-Magnetism, ALICE, FEMTOSPEX Molecules and Surfaces

User endstation possible
Distance Focus/last valve 1025 mm
Height Focus/floor level 1417 mm
Beam availability 12h/d
Phone 17980, 17981, 17982
Exit Slit Fixed Slits of 600µm, 200µm, 100µm, 50µm and 20µm width
PPRE Bunch Mode Quasi single bunch during multi bunch weeks available (at reduced intensity)
Pump Laser Legend Elite Duo; COHERENT
Laser Wiederholrate up to 6 kHz
Laser Wellenlänge 800 nm
Laser Leistung up to 10 W
Pump Laser Delay 2ns long optical delaystage; electronically in 12ns steps
Verfügbare Harmonische / OPA 400nm with variable attenuation and polarization OPA covering the range from ~250 up to 10000nm and fixed attenuation using ND filters