Beamline, experimental stations and photon beam diagnostics for the hard x-ray free electron laser of SACLA

Tono, Kensuke; Togashi, Tadashi; Inubushi, Yuichi; Sato, Takahiro; Katayama, Tetsuo; Ogawa, Kazuhiko; Ohashi, Haruhiko; Kimura, Hiroaki; Takahashi, Sunao; Takeshita, Kunikazu; Tomizawa, H.; Goto, Shunji; Ishikawa, Tetsuya; Yabashi, Makina

doi:10.1088/1367-2630/15/8/083035

Cited by 253 publications

(188 citation statements)

References 26 publications

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“…Confocal microscopy was used to measure the lengths of the damaged surface induced by the single shot X-ray pulses as shown in Figure 2 for Ru and Figure 3 for B 4 C. Additional image analysis was conducted using scanning electron microscopy and cross-sectioned transmission electron microscopy techniques on selected craters as shown for Ru in Figure 2 and for B 4 C in Figure 3. Interestingly, the widths of the craters were often not continuous or uniform.…”

mentioning

confidence: 99%

“…However, as we are trying to model the processes at energy densities just at TABLE I. This table shows 4 C at 12 keV, as the sample showed no visible signs of damage. In addition, as a significant fraction of the pulse energy is transmitted into the substrate, no realistic values of the damage dose could be calculated as they would relate more to the Si substrate than to the B 4 C layer.…”

mentioning

confidence: 99%

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Fluence thresholds for grazing incidence hard x-ray mirrors

Aquila

Sobierajski

Özkan

et al. 2015

Applied Physics Letters

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X-ray Free Electron Lasers (XFELs) have the potential to contribute to many fields of science and to enable many new avenues of research, in large part due to their orders of magnitude higher peak brilliance than existing and future synchrotrons. To best exploit this peak brilliance, these XFEL beams need to be focused to appropriate spot sizes. However, the survivability of X-ray optical components in these intense, femtosecond radiation conditions is not guaranteed. As mirror optics are routinely used at XFEL facilities, a physical understanding of the interaction between intense X-ray pulses and grazing incidence X-ray optics is desirable. We conducted single shot damage threshold fluence measurements on grazing incidence X-ray optics, with coatings of ruthenium and boron carbide, at the SPring-8 Angstrom compact free electron laser facility using 7 and 12 keV photon energies. The damage threshold dose limits were found to be orders of magnitude higher than would naively be expected. The incorporation of energy transport and dissipation via keV level energetic photoelectrons accounts for the observed damage threshold.

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confidence: 99%

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confidence: 99%

Fluence thresholds for grazing incidence hard x-ray mirrors

Aquila

Sobierajski

Özkan

et al. 2015

Applied Physics Letters

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“…The experimental chamber, built out of μ-metal and described in [15], was installed at the BL3 beamline at the SACLA FEL facility [3,23]. As shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…SACLA has a 30fs, 800 nm, 7 mJ laser system [23] that was used for the experiment. The THz radiation was generated in a LiNbO 3 crystal via the tilted pulse-front pumping method [24] optimized for a high-energy pump [25,26] outside of the chamber and then introduced into vacuum through a z-cut quartz window.…”

Section: Methodsmentioning

confidence: 99%

High-precision x-ray FEL pulse arrival time measurements at SACLA by a THz streak camera with Xe clusters

Juranić¹,

Степанов²,

Ischebeck³

et al. 2014

Opt. Express

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Abstract:The accurate measurement of the arrival time of a hard X-ray free electron laser (FEL) pulse with respect to a laser is of utmost importance for pump-probe experiments proposed or carried out at FEL facilities around the world. This manuscript presents the latest device to meet this challenge, a THz streak camera using Xe gas clusters, capable of pulse arrival time measurements with an estimated accuracy of several femtoseconds. An experiment performed at SACLA demonstrates the performance of the device at photon energies between 5 and 10 keV with variable photon beam parameters. © 2014 Optical Society of AmericaOCIS codes: (120.0120) Instrumentation, measurement, and metrology; (020.0020) Atomic and molecular physics; (140.2600) Free-electron lasers (FELs). Kumagai, "A compact X-ray free-electron laser emitting in the sub-angstrom region," Nat. Photonics 6(8), 540-544 (2012). 4. E. Allaria, C. Callegari, D. Cocco, W. M. Fawley, M. Kiskinova, C. Masciovecchio, and F. Parmigiani, "The FERMI@Elettra free-electron-laser source for coherent x-ray physics: photon properties, beam transport system and applications," New J. Phys. 12(7), 075002 (2010). 5. P. Oberta, U. Flechsig, and R. Abela, "The SwissFEL facility and its preliminary optics beamline layout," Proc. Krausz, "X-ray pulses approaching the attosecond frontier," Science 291(5510), 1923-1927 (2001). 18. M. Uiberacker, E. Goulielmakis, R. Kienberger, A. Baltuska, T. Westerwalbesloh, U. Keineberg, U. Heinzmann, M. Drescher, and F. Krausz, "Attosecond metrology with controlled light waveforms," Laser Phys. 15, 195-204 (2005). 19. B. L. Henke, E. M. Gullikson, and J. C. Davis, "X-ray interactions-photoabsorption, scattering, transmission, and reflection at E=50-30,000 eV, z=1-92," At. Data Nucl. Data Tables 54(2), 181-342 (1993). 20. D. Irimia, D. Dobrikov, R. Kortekaas, H. Voet, D. A. van den Ende, W. A. Groen, and M. H. M. Janssen, "A short pulse (7 micros FWHM) and high repetition rate (dc-5 kHz) cantilever piezovalve for pulsed atomic and molecular beams," Rev. Sci. Instrum. 80(11), 113303 (2009). 21. O. F. Hagena and W. Obert, "Cluster formation in expanding supersonic jets-effect of pressure, temperature, nozzle size, and test gas," J. References and links:

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“…The XFEL beamline (BL3) of SACLA produces hard x-ray pulses with peak powers of 6-60 GW, durations shorter than 10 fs (full width at half maximum) and photon energies of 4-20 keV [2,[36][37][38] . The fluid sample injectors have been playing central roles in experiments using the 'diffract-before-destroy' approach, especially in SFX [27,[39][40][41][42] .…”

Section: K Tonomentioning

confidence: 99%

Fluid sample injectors for x-ray free electron laser at SACLA

Tono

2017

High Pow Laser Sci Eng

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This paper provides a review on sample injectors which are provided at SPring-8 Angstrom Compact free electron LAser (SACLA) for conducting serial measurement in a 'diffract-before-destroy' scheme using an x-ray free electron laser (XFEL). Versatile experimental platforms at SACLA are able to accept various types of injectors, among which liquidjet, droplet and viscous carrier injectors are frequently utilized. These injectors produce different forms of fluid targets such as a liquid filament with a diameter in the order of micrometer, micro-droplet synchronized to XFEL pulses, and slowly flowing column of highly viscous fluid with a rate below 1 µL min −1 . Characteristics and applications of the injectors are described.

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Beamline, experimental stations and photon beam diagnostics for the hard x-ray free electron laser of SACLA

Cited by 253 publications

References 26 publications

Fluence thresholds for grazing incidence hard x-ray mirrors

Fluence thresholds for grazing incidence hard x-ray mirrors

High-precision x-ray FEL pulse arrival time measurements at SACLA by a THz streak camera with Xe clusters

Fluid sample injectors for x-ray free electron laser at SACLA

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