Absolute spectral metrology of XFEL pulses using diffraction in crystals

Ilia Petrov; Liubov Samoylova; Sarlota Birnsteinova; Valerio Bellucci; Mikako Makita; Tokushi Sato; Romain Letrun; Jayanath Koliyadu; Raphael de Wijn; Andrea Mazzolari; Marco Romagnoni; Richard Bean; Adrian Mancuso; Alke Meents; Henry N. Chapman; Patrik Vagovic

arXiv · 2303.00072

Absolute spectral metrology of XFEL pulses using diffraction in crystals

Ilia Petrov·Liubov Samoylova·Sarlota Birnsteinova·Valerio Bellucci·Mikako Makita·Tokushi Sato·Romain Letrun·Jayanath Koliyadu·Raphael de Wijn·Andrea Mazzolari·Marco Romagnoni·Richard Bean·Adrian Mancuso·Alke Meents·Henry N. Chapman·Patrik Vagovic

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Abstract

At modern X-ray sources, such as synchrotrons and X-ray Free-Electron Lasers (XFELs), it is important to measure the absolute value of the photon energy directly. Here, a method for absolute spectral metrology is presented. A photon energy estimation method based on the spectral measurements and rocking of diffracting crystals is presented. The photon energy of SASE1 channel of the European XFEL was measured, and the benefits and applications of the precise photon energy evaluation are discussed.

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Ilia Petrov, Liubov Samoylova, Sarlota Birnsteinova, Valerio Bellucci, Mikako Makita, Tokushi Sato, Romain Letrun, Jayanath Koliyadu, Raphael de Wijn, Andrea Mazzolari, Marco Romagnoni, Richard Bean, Adrian Mancuso, Alke Meents, Henry N. Chapman, Patrik Vagovic. 2023-02-28. Absolute spectral metrology of XFEL pulses using diffraction in crystals. https://arxiv.org/abs/2303.00072

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