High frame rate RIXS spectroscopy using a JUNGFRAU detector with an iLGAD sensor
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866915620653629440 |
|---|---|
| author | Duarte, Nuno Guyader, Loïc Le Hinger, Viktoria Ramilli, Marco Schlappa, Justine Carley, Robert Carulla, Maria Chang, Yi-Ping Chopra, Devesh Gerasimova, Natalia Grimes, Michael Mozzanica, Aldo Parchenko, Sergii Hoang, Le Phuong Staub, Urs Zhang, Jiaguo Bergamaschi, Anna Scherz, Andreas Schmitt, Bernd Turcato, Monica |
| author_facet | Duarte, Nuno Guyader, Loïc Le Hinger, Viktoria Ramilli, Marco Schlappa, Justine Carley, Robert Carulla, Maria Chang, Yi-Ping Chopra, Devesh Gerasimova, Natalia Grimes, Michael Mozzanica, Aldo Parchenko, Sergii Hoang, Le Phuong Staub, Urs Zhang, Jiaguo Bergamaschi, Anna Scherz, Andreas Schmitt, Bernd Turcato, Monica |
| contents | Resonant inelastic X-ray scattering (RIXS) is a powerful photon-in, photon-out spectroscopy technique for probing electronic, magnetic, and lattice excitations in matter. Time-resolved RIXS extends this capability through a stroboscopic optical pump-probe scheme to characterize the time evolution of the photoexcitation and subsequent relaxation dynamics of a sample. This technique is, however, extremely photon-hungry, requiring high-repetition-rate and intense X-ray facilities. The Heisenberg RIXS (hRIXS) spectrometer at the Spectroscopy and Coherent Scattering (SCS) instrument of the European X-ray Free-Electron Laser (EuXFEL) is designed to exploit high-repetition-rates, while maintaining optimal time and energy resolution. In this work, we demonstrate the successful deployment of a JUNGFRAU detector equipped with an inverse Low Gain Avalanche Diode (iLGAD) sensor for time-resolved RIXS studies in the soft X-ray range, using the hRIXS spectrometer. A spatial resolution of $19.71 \pm 0.7~μ\mathrm{m}$ and a resolving power exceeding 10,000 were achieved at an unprecedented frame rate of 47 kHz. Intra-train resolved data measured with a high FEL peak fluence of $1.8~\mathrm{mJ/cm^{2}}$ for a 928.5 eV ph photon energy and 1.1 MHz repetition rate from cupric oxide (CuO) revealed a decrease in the emitted signal by ~10% over a time interval of $340~μ\mathrm{s}$, indicating FEL-induced effects that require monitoring when conducting high-repetition-rate experiments. These results establish the JUNGFRAU-iLGAD as a promising detector to harvest the full potential of the hRIXS spectrometer, and validate its suitability for soft X-ray applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_12314 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | High frame rate RIXS spectroscopy using a JUNGFRAU detector with an iLGAD sensor Duarte, Nuno Guyader, Loïc Le Hinger, Viktoria Ramilli, Marco Schlappa, Justine Carley, Robert Carulla, Maria Chang, Yi-Ping Chopra, Devesh Gerasimova, Natalia Grimes, Michael Mozzanica, Aldo Parchenko, Sergii Hoang, Le Phuong Staub, Urs Zhang, Jiaguo Bergamaschi, Anna Scherz, Andreas Schmitt, Bernd Turcato, Monica Instrumentation and Detectors Resonant inelastic X-ray scattering (RIXS) is a powerful photon-in, photon-out spectroscopy technique for probing electronic, magnetic, and lattice excitations in matter. Time-resolved RIXS extends this capability through a stroboscopic optical pump-probe scheme to characterize the time evolution of the photoexcitation and subsequent relaxation dynamics of a sample. This technique is, however, extremely photon-hungry, requiring high-repetition-rate and intense X-ray facilities. The Heisenberg RIXS (hRIXS) spectrometer at the Spectroscopy and Coherent Scattering (SCS) instrument of the European X-ray Free-Electron Laser (EuXFEL) is designed to exploit high-repetition-rates, while maintaining optimal time and energy resolution. In this work, we demonstrate the successful deployment of a JUNGFRAU detector equipped with an inverse Low Gain Avalanche Diode (iLGAD) sensor for time-resolved RIXS studies in the soft X-ray range, using the hRIXS spectrometer. A spatial resolution of $19.71 \pm 0.7~μ\mathrm{m}$ and a resolving power exceeding 10,000 were achieved at an unprecedented frame rate of 47 kHz. Intra-train resolved data measured with a high FEL peak fluence of $1.8~\mathrm{mJ/cm^{2}}$ for a 928.5 eV ph photon energy and 1.1 MHz repetition rate from cupric oxide (CuO) revealed a decrease in the emitted signal by ~10% over a time interval of $340~μ\mathrm{s}$, indicating FEL-induced effects that require monitoring when conducting high-repetition-rate experiments. These results establish the JUNGFRAU-iLGAD as a promising detector to harvest the full potential of the hRIXS spectrometer, and validate its suitability for soft X-ray applications. |
| title | High frame rate RIXS spectroscopy using a JUNGFRAU detector with an iLGAD sensor |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2511.12314 |