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A two-day international workshop on the physics and integration of high-power lasers with the Linac Coherent Light Source was held in Stanford, California, USA, on October 1–2, 2013. The workshop was co-organized by UC Berkeley, Lawrence Berkeley, Lawrence Livermore, and SLAC National Accelerator Laboratories. More than 150 scientists, including 30 students and postdocs who are working in high-intensity laser-matter interactions, fusion research, and dynamic high-pressure science, came together from North America, Europe, and Asia. The group discussed the most promising and important new physics experiments that will be enabled by the unique combination of high-power lasers and the world-class LCLS free-electron laser X-ray beam. 相似文献
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The second international workshop on the physics enabled by the unique combination of high-power lasers with the world-class Linac Coherent Light Source (LCLS) free-electron X-ray laser beam was held in Stanford, CA, on October 7–8, 2014. The workshop was co-organized by UC Berkeley, Lawrence Berkeley, Lawrence Livermore, and SLAC National Accelerator Laboratories. More than 120 scientists, including 40 students and postdoctoral scientists who are working in high-intensity laser-matter interactions, fusion research, and dynamic high-pressure science came together from North America, Europe, and Asia. The focus of the second workshop was on scientific highlights and the lessons learned from 16 new experiments that were performed on the Matter in Extreme Conditions (MEC) instrument since the first workshop was held one year ago. 相似文献
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On October 5–6, 2015, the third international user workshop focusing on high-power lasers at the Linac Coherent Light Source (LCLS) was held in Menlo Park, CA, USA [1, 2]. The workshop was co-organized by Los Alamos National Laboratory and SLAC National Accelerator Laboratory. More than 110 scientists attended from North America, Europe, and Asia to discuss high-energy-density (HED) science that is enabled by the unique combination of high-power lasers with the LCLS X-rays at the LCLS-Matter in Extreme Conditions (MEC) endstation. 相似文献
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Gutt C Wochner P Fischer B Conrad H Castro-Colin M Lee S Lehmkühler F Steinke I Sprung M Roseker W Zhu D Lemke H Bogle S Fuoss PH Stephenson GB Cammarata M Fritz DM Robert A Grübel G 《Physical review letters》2012,108(2):024801
We measured the transverse and longitudinal coherence properties of the Linac Coherent Light Source (LCLS) at SLAC in the hard x-ray regime at 9 keV photon energy on a single shot basis. Speckle patterns recorded in the forward direction from colloidal nanoparticles yielded the transverse coherence properties of the focused LCLS beam. Speckle patterns from a gold nanopowder recorded with atomic resolution allowed us to measure the shot-to-shot variations of the spectral properties of the x-ray beam. The focused beam is in the transverse direction fully coherent with a mode number close to 1. The average number of longitudinal modes behind the Si(111) monochromator is about 14.5 and the average coherence time τ(c)=(2.0±1.0) fc. The data suggest a mean x-ray pulse duration of (29±14) fs behind the monochromator for (100±14) fc electron pulses. 相似文献
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Manabu Sato Yoshifumi Ikeda Masakazu Endo Shinji Fukuda Naohiro Tanno 《Optical Review》2001,8(1):37-42
The validity of the phase-drift-suppression method (PDSM) using coherent light sources of a single-mode laser diode (LD) or multimode Nd:YAG laser has been experimentally shown. PDSM can enhance the stability of an output signal in heterodyne detection using higher order harmonics. In the Michelson interferometer, the fundamental and second harmonics in heterodyne beat signals were detected by two lock-in amplifiers, and the computed signal intensity (CSI) was obtained in the computer as an output signal. Relations between the stability of CSI and modulation indexes in sinusoidal phase modulations were measured. The CSI stability was enhanced about twice by PDSM using a single-mode laser diode, and from 4 times to 9 times using a multimode laser. 相似文献
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Albert Macrander 《Synchrotron Radiation News》2013,26(5):6-9
The fourth in a series of workshops devoted to the use of diamonds at synchrotrons and free electron lasers (FELs) was held on May 5-6, 2011, at the Advanced Photon Source. The previous DMSL workshop was held in Japan in 2008. The workshop was supported in part by Argonne National Laboratory; Applied Diamond, Inc.; SINMAT, Inc.; and elementsix, Ltd. The scope was to assess : 1) the status, size, quality, and availability of synthetic type IIa diamonds; 2) the status of CVD diamonds; 3) applications for beamline optics; 4) applications for beam position monitors (BPMs) and detectors; 5) applications at FELs; and 6) novel applications, such as for an X-ray free electron laser oscillator (XFELO). On May 5, Linda Young (APS/XSD) gave the workshop welcome. There were three sessions on each of the two days. A website was created and will be kept live where the detailed age-nda and list of speakers will remain available (http://www.aps.anl.gov/News/Conferences/2011/DMLS). As part of the session on BPMs and detectors, there were several speakers from outside the light source community, which demonstrated that there is a larger science audience for these applications than just light sources. Highlights of the workshop include: 1) reports of supplier facilities for thinning and polishing; 2) reports on tests of supplier-provided bonds to CVD cooling manifolds; 3) a report of more than 99% reflectivity from diamond for hard X-rays, significant for XFELO feasibility, measured at the APS; 4) a report on thermal expansion measurements at low temperatures made at the APS (no negative thermal expansion, thermal expansion below 1e-9); 5) a report from Brookhaven National Laboratory on substantial progress in diamond beam flux monitors (BPMs), and fast detectors; 6) a presentation on plans for a self-seeding at LCLS with diamond crystals. A synopsis of each technical session follows below. 相似文献
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When Diamond Light Source goes into operation in January 2007, one of the first beamlines will house a state-of-the-art PhotoEmission Electron Microscope (PEEM). On July 12 and 13, 2006, Diamond hosted a workshop to promote the wide-ranging capabilities of PEEM to the user community. An international audience enjoyed talks and discussions on interface magnetism, geological science, surface chemistry and the principles of X-ray excited PEEM. 相似文献
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N. D. Kundikova 《Russian Physics Journal》2016,58(10):1369-1377
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Andrew Doran Matthew ChurchTom Miller Greg MorrisonAnthony T. Young Andreas Scholl 《Journal of Electron Spectroscopy and Related Phenomena》2012
X-ray PEEM at liquid helium temperatures at a 3rd generation synchrotron is discussed. Detailed instrument design and performance is presented along with examples of the scientific opportunities afforded through routine low temperature performance with negligible tradeoffs of imaging performance or general ease of use. 相似文献
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Chung‐Jong Yu Hae Cheol Lee Chan Kim Wonsuk Cha Jerome Carnis Yoonhee Kim Do Young Noh Hyunjung Kim 《Journal of synchrotron radiation》2014,21(1):264-267
The coherent X‐ray scattering beamline at the 9C port of the upgraded Pohang Light Source (PLS‐II) at Pohang Accelerator Laboratory in Korea is introduced. This beamline provides X‐rays of 5–20 keV, and targets coherent X‐ray experiments such as coherent diffraction imaging and X‐ray photon correlation spectroscopy. The main parameters of the beamline are summarized, and some preliminary experimental results are described. 相似文献
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Michael Drakopoulos 《Synchrotron Radiation News》2017,30(3):41-47
Synchrotron-based engineering science covers a large field of applications. However, they are all connected in two ways. First, the very synchrotron techniques employed to study the various applications all work in the same way in that they determine structural parameters on the atomic and microscopic scale. Secondly, the portfolio of applications discussed here describes the complete life cycle of an engineering material, starting with processing of the base material—often from the melt—then the characterization of material properties, followed by the forming and joining into components, then component characterization during service, material aging, damage and failure and, finally, recycling or decommissioning. The structural problems which occur during the different stages in the life cycle of a material are complex, due to the advanced material technology of today's devices. We have created alloys for special applications, compound materials with novel properties, sophisticated bulk and surface treatments, and new forming and joining techniques. We are also concerned with the effect of the material on the environment after it has ended its service. 相似文献
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Marius Schmidt 《Synchrotron Radiation News》2015,28(6):25-30
Serial femtosecond crystallography with biological macromolecules is a rapidly developing method tailored to the immense brilliance of the emerging free electron lasers for hard X-rays (X-ray FELs). Recently, the first successful time-resolved serial femtosecond crystallographic experiment at near atomic resolution was conducted at the Linac Coherent Light Source. The X-ray FEL-based experiments will trigger new developments not only at the X-ray FELs, but also at existing synchrotron light sources. This review will attempt to summarize some of the most important experiments to date and give a brief outlook on what to expect. 相似文献
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Rohanah Hussain Tamás Jávorfi Giuliano Siligardi 《Journal of synchrotron radiation》2012,19(1):132-135
Synchrotron radiation circular dichroism (SRCD) is a well established technique in structural biology. The first UV‐VIS beamline, dedicated to circular dichroism, at Diamond Light Source Ltd, a third‐generation synchrotron facility in south Oxfordshire, UK, has recently become operational and it is now available for the user community. Herein the main characteristics of the B23 SRCD beamline, the ancillary facilities available for users, and some of the recent advances achieved are summarized. 相似文献