Alexey E Pestov, Aleksei Ya Lopatin, Petr V Volkov, Maria V Zorina, Andrei Yu Lukyanov, Ilya V Malyshev, Mikhail S Mikhailenko, Mikhail N Toropov, Daniil A Semikov, Aleksei K Chernyshev, Nikolay I Chkhalo, Pavel A Yunin, Egor I Glushkov, Sergey K Gordeev, Svetlana B Korchagina
{"title":"The diamond-silicon carbide composite Skeleton<sup>®</sup> as a promising material for substrates of intense X-ray beam optics.","authors":"Alexey E Pestov, Aleksei Ya Lopatin, Petr V Volkov, Maria V Zorina, Andrei Yu Lukyanov, Ilya V Malyshev, Mikhail S Mikhailenko, Mikhail N Toropov, Daniil A Semikov, Aleksei K Chernyshev, Nikolay I Chkhalo, Pavel A Yunin, Egor I Glushkov, Sergey K Gordeev, Svetlana B Korchagina","doi":"10.1107/S1600577524006088","DOIUrl":"10.1107/S1600577524006088","url":null,"abstract":"<p><p>The paper considers the possibility of using the diamond-silicon carbide composite Skeleton<sup>®</sup> with a technological coating of polycrystalline silicon as a substrate for X-ray mirrors used with powerful synchrotron radiation sources (third+ and fourth generation). Samples were studied after polishing to provide the following surface parameters: root-mean-square flatness ≃ 50 nm, micro-roughness on the frame 2 µm × 2 µm σ ≃ 0.15 nm. The heat capacity, thermal conductivity and coefficient of linear thermal expansion were investigated. For comparison, a monocrystalline silicon sample was studied under the same conditions using the same methods. The value of the coefficient of linear thermal expansion turned out to be higher than that of monocrystalline silicon and amounted to 4.3 × 10<sup>-6</sup> K<sup>-1</sup>, and the values of thermal conductivity (5.0 W cm<sup>-1</sup> K<sup>-1</sup>) and heat capacity (1.2 J K<sup>-1</sup> g<sup>-1</sup>) also exceeded the values for Si. Thermally induced deformations of both Skeleton<sup>®</sup> and monocrystalline silicon samples under irradiation with a CO<sub>2</sub> laser beam have also been experimentally studied. Taking into account the obtained thermophysical constants, the calculation of thermally induced deformation under irradiation with hard (20 keV) X-rays showed almost three times less deformation of the Skeleton<sup>®</sup> sample than of the monocrystalline silicon sample.</p>","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"1179-1188"},"PeriodicalIF":2.5,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371023/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141894674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Christoph Kittel, Antoine Sarracini, Sven Augustin, Ningchen Yang, Andre Al Haddad, Eugenio Ferrari, Gregor Knopp, Jonas Knurr, Ana Sofia Morillo-Candas, Iwona Swiderska, Eduard Prat, Nicholas Sammut, Thomas Schmidt, Christoph Bostedt, Marco Calvi, Kirsten Schnorr
{"title":"Demonstration of full polarization control of soft X-ray pulses with Apple X undulators at SwissFEL using recoil ion momentum spectroscopy.","authors":"Christoph Kittel, Antoine Sarracini, Sven Augustin, Ningchen Yang, Andre Al Haddad, Eugenio Ferrari, Gregor Knopp, Jonas Knurr, Ana Sofia Morillo-Candas, Iwona Swiderska, Eduard Prat, Nicholas Sammut, Thomas Schmidt, Christoph Bostedt, Marco Calvi, Kirsten Schnorr","doi":"10.1107/S1600577524006325","DOIUrl":"10.1107/S1600577524006325","url":null,"abstract":"<p><p>The ability to freely control the polarization of X-rays enables measurement techniques relying on circular or linear dichroism, which have become indispensable tools for characterizing the properties of chiral molecules or magnetic structures. Therefore, the demand for polarization control in X-ray free-electron lasers is increasing to enable polarization-sensitive dynamical studies on ultrafast time scales. The soft X-ray branch Athos of SwissFEL was designed with the aim of providing freely adjustable and arbitrary polarization by building its undulator solely from modules of the novel Apple X type. In this paper, the magnetic model of the linear inclined and circular Apple X polarization schemes are studied. The polarization is characterized by measuring the angular electron emission distributions of helium for various polarizations using cold target recoil ion momentum spectroscopy. The generation of fully linear polarized light of arbitrary angle, as well as elliptical polarizations of varying degree, are demonstrated.</p>","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"1134-1145"},"PeriodicalIF":2.5,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371041/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141908061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Study on the UV FEL single-shot damage threshold of an Au thin film.","authors":"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","doi":"10.1107/S1600577524005332","DOIUrl":"10.1107/S1600577524005332","url":null,"abstract":"<p><p>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 characterized by profilometer and optical microscope. A theoretical approach of the phenomenon is also presented, by application of conventional single-pulse damage threshold calculations, a one-dimensional thermal diffusion model, as well as finite-element analysis with ANSYS.</p>","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"1010-1018"},"PeriodicalIF":2.5,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371058/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141753119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Matthias Dreimann, Frank Wahlert, Sebastian Roling, Rolf Treusch, Elke Plönjes, Helmut Zacharias
{"title":"Development and performance simulations of a soft X-ray and XUV split-and-delay unit at beamlines FL23/24 at FLASH2 for time-resolved two-color pump-probe experiments.","authors":"Matthias Dreimann, Frank Wahlert, Sebastian Roling, Rolf Treusch, Elke Plönjes, Helmut Zacharias","doi":"10.1107/S160057752400609X","DOIUrl":"10.1107/S160057752400609X","url":null,"abstract":"<p><p>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 suitable thin filters and an optical grating beam path a wide range of combinations of photon energies in the spectral range from 150 eV to 780 eV can be chosen. In this paper, simulations of the spectral transmission and performance parameters of the filter technique are discussed, along with a monochromator with dispersion compensation presently under construction.</p>","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"1168-1178"},"PeriodicalIF":2.5,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371028/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141894672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Carlos Navarrete-León, P Stephen Patrick, Adam Doherty, Harry Allan, Silvia Cipiccia, Shashidhara Marathe, Kaz Wanelik, Michela Esposito, Charlotte K Hagen, Alessandro Olivo, Marco Endrizzi
{"title":"High-angular-sensitivity X-ray phase-contrast microtomography of soft tissue through a two-directional beam-tracking synchrotron set-up.","authors":"Carlos Navarrete-León, P Stephen Patrick, Adam Doherty, Harry Allan, Silvia Cipiccia, Shashidhara Marathe, Kaz Wanelik, Michela Esposito, Charlotte K Hagen, Alessandro Olivo, Marco Endrizzi","doi":"10.1107/S1600577524005034","DOIUrl":"10.1107/S1600577524005034","url":null,"abstract":"<p><p>Two-directional beam-tracking (2DBT) is a method for phase-contrast imaging and tomography that uses an intensity modulator to structure the X-ray beam into an array of independent circular beamlets that are resolved by a high-resolution detector. It features isotropic spatial resolution, provides two-dimensional phase sensitivity, and enables the three-dimensional reconstructions of the refractive index decrement, δ, and the attenuation coefficient, μ. In this work, the angular sensitivity and the spatial resolution of 2DBT images in a synchrotron-based implementation is reported. In its best configuration, angular sensitivities of ∼20 nrad and spatial resolution of at least 6.25 µm in phase-contrast images were obtained. Exemplar application to the three-dimensional imaging of soft tissue samples, including a mouse liver and a decellularized porcine dermis, is also demonstrated.</p>","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"1293-1298"},"PeriodicalIF":2.5,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371031/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141617399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gudrun Lotze, Anand H S Iyer, Olof Bäcke, Sebastian Kalbfleisch, Magnus Hörnqvist Colliander
{"title":"In situ characterization of stresses, deformation and fracture of thin films using transmission X-ray nanodiffraction microscopy. Corrigendum.","authors":"Gudrun Lotze, Anand H S Iyer, Olof Bäcke, Sebastian Kalbfleisch, Magnus Hörnqvist Colliander","doi":"10.1107/S1600577524006283","DOIUrl":"10.1107/S1600577524006283","url":null,"abstract":"<p><p>Errors in variable subscripts, equations and Fig. 8 in Section 3.2 of the article by Lotze et al. [(2024). J. Synchrotron Rad. 31, 42-52] are corrected.</p>","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"1409-1413"},"PeriodicalIF":2.5,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371059/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141894673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chunpeng Wang, Xiaoyun Li, Rongzheng Wan, Jige Chen, Jing Ye, Ke Li, Aiguo Li, Renzhong Tai, Alessandro Sepe
{"title":"Accelerating imaging research at large-scale scientific facilities through scientific computing.","authors":"Chunpeng Wang, Xiaoyun Li, Rongzheng Wan, Jige Chen, Jing Ye, Ke Li, Aiguo Li, Renzhong Tai, Alessandro Sepe","doi":"10.1107/S1600577524007239","DOIUrl":"10.1107/S1600577524007239","url":null,"abstract":"<p><p>To date, computed tomography experiments, carried-out at synchrotron radiation facilities worldwide, pose a tremendous challenge in terms of the breadth and complexity of the experimental datasets produced. Furthermore, near real-time three-dimensional reconstruction capabilities are becoming a crucial requirement in order to perform high-quality and result-informed synchrotron imaging experiments, where a large amount of data is collected and processed within a short time window. To address these challenges, we have developed and deployed a synchrotron computed tomography framework designed to automatically process online the experimental data from the synchrotron imaging beamlines, while leveraging the high-performance computing cluster capabilities to accelerate the real-time feedback to the users on their experimental results. We have, further, integrated it within a modern unified national authentication and data management framework, which we have developed and deployed, spanning the entire data lifecycle of a large-scale scientific facility. In this study, the overall architecture, functional modules and workflow design of our synchrotron computed tomography framework are presented in detail. Moreover, the successful integration of the imaging beamlines at the Shanghai Synchrotron Radiation Facility into our scientific computing framework is also detailed, which, ultimately, resulted in accelerating and fully automating their entire data processing pipelines. In fact, when compared with the original three-dimensional tomography reconstruction approaches, the implementation of our synchrotron computed tomography framework led to an acceleration in the experimental data processing capabilities, while maintaining a high level of integration with all the beamline processing software and systems.</p>","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"1317-1326"},"PeriodicalIF":2.5,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371030/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142082367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Valérie Briois, Jean Paul Itié, Alain Polian, Andrew King, Aliou Sadia Traore, Eric Marceau, Ovidiu Ersen, Camille La Fontaine, Laurent Barthe, Anthony Beauvois, Olga Roudenko, Stéphanie Belin
{"title":"Hyperspectral full-field quick-EXAFS imaging at the ROCK beamline for monitoring micrometre-sized heterogeneity of functional materials under process conditions.","authors":"Valérie Briois, Jean Paul Itié, Alain Polian, Andrew King, Aliou Sadia Traore, Eric Marceau, Ovidiu Ersen, Camille La Fontaine, Laurent Barthe, Anthony Beauvois, Olga Roudenko, Stéphanie Belin","doi":"10.1107/S1600577524006581","DOIUrl":"10.1107/S1600577524006581","url":null,"abstract":"<p><p>Full-field transmission X-ray microscopy has been recently implemented at the hard X-ray ROCK-SOLEIL quick-EXAFS beamline, adding micrometre spatial resolution to the second time resolution characterizing the beamline. Benefiting from a beam size versatility due to the beamline focusing optics, full-field hyperspectral XANES imaging has been successfully used at the Fe K-edge for monitoring the pressure-induced spin transition of a 150 µm × 150 µm Fe(o-phen)<sub>2</sub>(NCS)<sub>2</sub> single crystal and the charge of millimetre-sized LiFePO<sub>4</sub> battery electrodes. Hyperspectral imaging over 2000 eV has been reported for the simultaneous monitoring of Fe and Cu speciation changes during activation of a FeCu bimetallic catalyst along a millimetre-sized catalyst bed. Strategies of data acquisition and post-data analysis using Jupyter notebooks and multivariate data analysis are presented, and the gain obtained using full-field hyperspectral quick-EXAFS imaging for studies of functional materials under process conditions in comparison with macroscopic information obtained by non-spatially resolved quick-EXAFS techniques is discussed.</p>","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"1084-1104"},"PeriodicalIF":2.5,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371034/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142044229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Luka Novinec, Matteo Pancaldi, Flavio Capotondi, Giovanni De Ninno, Francesco Guzzi, George Kourousias, Emanuele Pedersoli, Barbara Ressel, Benedikt Rösner, Alberto Simoncig, Marco Zangrando, Michele Manfredda
{"title":"New achievements in orbital angular momentum beam characterization using a Hartmann wavefront sensor and the Kirkpatrick-Baez active optical system KAOS.","authors":"Luka Novinec, Matteo Pancaldi, Flavio Capotondi, Giovanni De Ninno, Francesco Guzzi, George Kourousias, Emanuele Pedersoli, Barbara Ressel, Benedikt Rösner, Alberto Simoncig, Marco Zangrando, Michele Manfredda","doi":"10.1107/S160057752400626X","DOIUrl":"10.1107/S160057752400626X","url":null,"abstract":"<p><p>Advances in physics have been significantly driven by state-of-the-art technology, and in photonics and X-ray science this calls for the ability to manipulate the characteristics of optical beams. Orbital angular momentum (OAM) beams hold substantial promise in various domains such as ultra-high-capacity optical communication, rotating body detection, optical tweezers, laser processing, super-resolution imaging etc. Hence, the advancement of OAM beam-generation technology and the enhancement of its technical proficiency and characterization capabilities are of paramount importance. These endeavours will not only facilitate the use of OAM beams in the aforementioned sectors but also extend the scope of applications in diverse fields related to OAM beams. At the FERMI Free-Electron Laser (Trieste, Italy), OAM beams are generated either by tailoring the emission process on the undulator side or, in most cases, by coupling a spiral zone plate (SZP) in tandem with the refocusing Kirkpatrick-Baez active optic system (KAOS). To provide a robust and reproducible workflow to users, a Hartmann wavefront sensor (WFS) is used for both optics tuning and beam characterization. KAOS is capable of delivering both tightly focused and broad spots, with independent control over vertical and horizontal magnification. This study explores a novel non-conventional `near collimation' operational mode aimed at generating beams with OAM that employs the use of a lithographically manufactured SZP to achieve this goal. The article evaluates the mirror's performance through Hartmann wavefront sensing, offers a discussion of data analysis methodologies, and provides a quantitative analysis of these results with ptychographic reconstructions.</p>","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"1058-1066"},"PeriodicalIF":2.5,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371050/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141989247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marcus Agåker, Johan Söderström, Thomas M Baumann, Carl Johan Englund, Ludvig Kjellsson, Rebecca Boll, Alberto De Fanis, Simon Dold, Tommaso Mazza, Jacobo Montaño, Astrid Münnich, Terence Mullins, Yevheniy Ovcharenko, Nils Rennhack, Philipp Schmidt, Björn Senfftleben, Monica Turcato, Sergey Usenko, Michael Meyer, Joseph Nordgren, Jan Erik Rubensson
{"title":"A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL.","authors":"Marcus Agåker, Johan Söderström, Thomas M Baumann, Carl Johan Englund, Ludvig Kjellsson, Rebecca Boll, Alberto De Fanis, Simon Dold, Tommaso Mazza, Jacobo Montaño, Astrid Münnich, Terence Mullins, Yevheniy Ovcharenko, Nils Rennhack, Philipp Schmidt, Björn Senfftleben, Monica Turcato, Sergey Usenko, Michael Meyer, Joseph Nordgren, Jan Erik Rubensson","doi":"10.1107/S1600577524005988","DOIUrl":"10.1107/S1600577524005988","url":null,"abstract":"<p><p>A 1D imaging soft X-ray spectrometer installed on the small quantum systems (SQS) scientific instrument of the European XFEL is described. It uses movable cylindrical constant-line-spacing gratings in the Rowland configuration for energy dispersion in the vertical plane, and Wolter optics for simultaneous 1D imaging of the source in the horizontal plane. The soft X-ray fluorescence spectro-imaging capability will be exploited in pump-probe measurements and in investigations of propagation effects and other nonlinear phenomena.</p>","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"1264-1275"},"PeriodicalIF":2.5,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371048/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141793819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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