Journal Article

PUBDB-2024-06216

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Diamond sensors for hard X-ray energy and position resolving measurements at the European XFEL

Çonka Yıldız, T. (Corresponding author) ; Freund, W. ; Liu, J.XFEL.EU* ; Schreck, M. ; Khakhulin, D. ; Yousef, H. ; Milne, C. ; Grünert, J.

2024
Wiley-Blackwell [Erscheinungsort nicht ermittelbar]

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Please use a persistent id in citations: doi:10.1107/S1600577524006015  doi:10.3204/PUBDB-2024-06216

Abstract: The diagnostics of X-ray beam properties has a critical importance at the European X-ray Free-Electron Laser facility. Besides existing diagnostic components, utilization of a diamond sensor was proposed to achieve radiation-hard, non-invasive beam position and pulse energy measurements for hard X-rays. In particular, with very hard X-rays, diamond-based sensors become a useful complement to gas-based devices which lose sensitivity due to significantly reduced gas cross-sections. The measurements presented in this work were performed with diamond sensors consisting of an electronic-grade single-crystal chemical-vapor-deposition diamond with position-sensitive resistive electrodes in a duo-lateral configuration. The results show that the diamond sensor delivers pulse-resolved X-ray beam position data at 2.25 MHz with an uncertainty of less than 1% of the beam size. To our knowledge this is the first demonstration of pulse-resolved position measurements at the MHz rate using a transmissive diamond sensor at a free-electron laser facility. It can therefore be a valuable tool for X-ray free-electron lasers, especially for high-repetition-rate machines, enabling applications such as beam-based alignment and intra-pulse-train position feedback.

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Contributing Institute(s):

1. X-Ray Photon Diagnostics (XFEL_DO_ID_XPD)

Research Program(s):

1. 6G13 - Accelerator of European XFEL (POF4-6G13) (POF4-6G13)

Experiment(s):

1. Experiments at XFEL

Appears in the scientific report 2024

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