Zobrazeno 1 - 10
of 15 383
pro vyhledávání: '"Free Electron Laser"'
Autor:
Matthias Dreimann, Frank Wahlert, Sebastian Roling, Rolf Treusch, Elke Plönjes, Helmut Zacharias
Publikováno v:
Journal of Synchrotron Radiation, Vol 31, Iss 5, Pp 1168-1178 (2024)
The split-and-delay unit (SDU) at FLASH2 will be upgraded to enable the simultaneous operation of two temporally, spatially and spectrally separated probe beams when the free-electron laser undulators are operated in a two-color scheme. By means of s
Externí odkaz:
https://doaj.org/article/7d2619ff548c41098377bc2d34206d00
Publikováno v:
Journal of Synchrotron Radiation, Vol 31, Iss 5, Pp 1019-1028 (2024)
The Pohang Accelerator Laboratory X-ray Free-Electron Laser (PAL-XFEL) operates hard X-ray and soft X-ray beamlines for conducting scientific experiments providing intense ultrashort X-ray pulses based on the self-amplified spontaneous emission (SASE
Externí odkaz:
https://doaj.org/article/8f8adaa206ba4ab0b5d5cbd5ae72dd06
Autor:
Meiyi Wu, Qinming Li, Mingchang Wang, Qinghao Zhu, Jiandong Cai, Zhongmin Xu, Hao Zhou, Long Huang, Bingbing Zhang, Runze Qi, Zhe Zhang, Wenbin Li, Yinpeng Zhong, Weiqing Zhang
Publikováno v:
Journal of Synchrotron Radiation, Vol 31, Iss 5, Pp 1010-1018 (2024)
The damage threshold of an Au-coated flat mirror, one of the reflective optics installed on the FEL-2 beamline of the Dalian Coherent Light Source, China, upon far-UV free-electron laser irradiation is evaluated. The surface of the coating is charact
Externí odkaz:
https://doaj.org/article/99172784a4ca4508a5d37bd0da48681f
Autor:
Shijing He, Haoran Yuan, Tianyu Wu, Nuo Chen, Xinyu Zhang, Zhizhuo Wang, Xuerong Liu, Fang Liu
Publikováno v:
Journal of Synchrotron Radiation, Vol 31, Iss 5, Pp 1126-1133 (2024)
Addressing the demand for high stability of beamline instruments at the SHINE facility, a high stability mirror regulating mechanism has been developed for mirror adjustments. Active mass damping was adopted to attenuate pitch angle vibrations of mir
Externí odkaz:
https://doaj.org/article/c3c587873c674a2e8c71dcb500d2aecf
Autor:
Ralf D. Geckeler, Andreas Just, Michael Krause, Olaf Schnabel, Ian Lacey, Damon English, Valeriy V. Yashchuk
Publikováno v:
Journal of Synchrotron Radiation, Vol 31, Iss 4, Pp 670-680 (2024)
Deflectometric profilometers are used to precisely measure the form of beam shaping optics of synchrotrons and X-ray free-electron lasers. They often utilize autocollimators which measure slope by evaluating the displacement of a reticle image on a d
Externí odkaz:
https://doaj.org/article/4d6fd33e1af3439b8a9b4ec9fdd5cdcb
Autor:
Dario De Angelis, Luca Longetti, Gabriele Bonano, Jacopo Stefano Pelli Cresi, Laura Foglia, Matteo Pancaldi, Flavio Capotondi, Emanuele Pedersoli, Filippo Bencivenga, Marija Krstulovic, Ralf Hendrik Menk, Sergio D'Addato, Stefano Orlando, Monica de Simone, Rebecca A. Ingle, Davide Bleiner, Marcello Coreno, Emiliano Principi, Majed Chergui, Claudio Masciovecchio, Riccardo Mincigrucci
Publikováno v:
Journal of Synchrotron Radiation, Vol 31, Iss 3, Pp 605-612 (2024)
Experimental characterization of the structural, electronic and dynamic properties of dilute systems in aqueous solvents, such as nanoparticles, molecules and proteins, are nowadays an open challenge. X-ray absorption spectroscopy (XAS) is probably o
Externí odkaz:
https://doaj.org/article/0602df5ce26e46839e71ef0f1abf669d
Publikováno v:
Journal of Synchrotron Radiation, Vol 31, Iss 2, Pp 243-251 (2024)
Large-bandwidth pulses produced by cutting-edge X-ray free-electron lasers (FELs) are of great importance in research fields like material science and biology. In this paper, a new method to generate high-power ultrashort FEL pulses with tunable spec
Externí odkaz:
https://doaj.org/article/5fa45161ec2e450eb81cae3b2f4dfe62
Publikováno v:
Optics, Vol 5, Iss 1, Pp 88-100 (2024)
We simulate ultrafast electronic transitions in an atom and corresponding absorption line changes with a numerical, few-level model, similar to previous work. In addition, a convolutional neural network (CNN) is employed for the first time to predict
Externí odkaz:
https://doaj.org/article/3b88012af0764ba1b22adfd8035bf4b4
Autor:
LEI Zhidi, DENG Rongbing, DENG Haixiao, ZHEN Tingting, GAO Fei, YIN Lixin, HUANG Yawei, LIU Yiyong
Publikováno v:
He jishu, Vol 47, Iss 2, Pp 15-22 (2024)
BackgroundThe high-precision magnetoelectric velocity sensor can measure the vibration of the superconducting cavity in a low-temperature environment.PurposeThis study aims to quantitatively investigate the effects of temperature on the vibration cha
Externí odkaz:
https://doaj.org/article/376f7a024c7346929d2e6fce4f23726c
Publikováno v:
Journal of Synchrotron Radiation, Vol 31, Iss 1, Pp 113-128 (2024)
In X-ray diffraction imaging (XDI), electron density maps of a targeted particle are reconstructed computationally from the diffraction pattern alone using phase-retrieval (PR) algorithms. However, the PR calculations sometimes fail to yield realisti
Externí odkaz:
https://doaj.org/article/a0f6c091017f4c5786483aad67d906f9