Journal Article

PUBDB-2026-01105

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Focussing options using compound refractive lenses at beamline P10 of PETRA III

Westermeier, F. (Corresponding author)XFEL.EU*DESY* ; Anthuparambil, N. D.Extern* ; Ren, Z.Extern* ; Roseker, W.XFEL.EU*DESY* ; Rysov, R.XFEL.EU*DESY* ; Weschke, D.DESY* ; Xu, H. ; Sprung, M.XFEL.EU*DESY*

2025
IOP Publ. Bristol

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Please use a persistent id in citations: doi:10.1088/1742-6596/3010/1/012059  doi:10.3204/PUBDB-2026-01105

Abstract: In a coherent scattering experiment, one of the important experimental parameters is the speckle visibility, which can be changed by adjusting the size of the X-ray beam on the sample. Focussing optics provide therefore a convenient tool to increase the speckle visibility, while simultaneously increasing the flux density and thus the dose on the sample. At the Coherence Applications Beamline P10 different focussing options are used to optimize this interplay of dose and speckle visibility for a given experiment. Using compound refractive lenses, three different realizations are presented using a lens-to-sample distance of 0.45, 1.6 and 10.8 m. The resulting focal spot sizes range from around 1 µm × 1 µm to around 15 µm × 7 µm (horizontal × vertical direction).

Note: cc-by

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Contributing Institute(s):

1. PETRA-S (FS-PETRA-S)
2. DOOR-User (DOOR ; HAS-User)
3. MID (XFEL_E1_MID)
4. FXE (XFEL_E1_FXE)
5. FS-Beamline Technology (FS-BT)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)

Experiment(s):

1. PETRA Beamline P10 (PETRA III)

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Database coverage:
; ; ; Nationallizenz

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