Bulletin of the American Physical Society
APS March Meeting 2017
Volume 62, Number 4
Monday–Friday, March 13–17, 2017; New Orleans, Louisiana
Session X40: Division of Physics of Beams and Forum on International Physics Introduce the World's Newest Light SourcesInvited Undergraduate
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Sponsoring Units: FIP Chair: Cherrill Spencer, SLAC National Accelerator Laboratory (retired) Room: 387 |
Friday, March 17, 2017 8:00AM - 8:36AM |
X40.00001: Overview of New Synchrotron Radiation and Free Electron Laser Light Sources Invited Speaker: Richard Walker |
Friday, March 17, 2017 8:36AM - 9:12AM |
X40.00002: Status and Opportunities of Taiwan Photon Source Invited Speaker: Di-Jing Huang Recently the National Synchrotron Radiation Research Center (NSRRC) in Taiwan has successfully constructed a low-emittance 3 GeV synchrotron light source, the Taiwan Photon Source (TPS). The TPS with a circumference of 518 m is composed of 24 double-bend achromatic (DBA) cells connected by six 12-m straight sections and eighteen 7-m straight sections. The natural emittance of the TPS is 1.6 nm.rad with a small dispersion in the straight sections. In phase-I operation, the TPS uses two sets of KEK-B type superconducting RF cavities to achieve a design goal of 500-mA electron current in a top-up injection mode. Seven phase-I beamlines aim for the forefront of research to cover the diverse photon sciences in an energy range from soft to hard X-rays. These beamlines are optimized for protein micro-crystallography, low-energy excitations of novel materials with atomic specificity, spectroscopy and diffraction on the submicron and nanometer scales, scattering of coherent X-rays, and scanning nanoprobe studies that will resolve structures in a spatial resolution of tens nm. All phase-I beamlines will be available to users in 2017. In this talk, we will present the scientific activities from the TPS phase-I operation, Particularly, we will discuss results of high-resolution X-ray powder diffraction, X-ray nanodiffraction and coherent diffraction including ptychography, followed by an overview of future beamline plan. [Preview Abstract] |
Friday, March 17, 2017 9:12AM - 9:48AM |
X40.00003: Status and Future Development Plans for the MAX IV Light Sources: pushing further towards high brightness and coherence. Invited Speaker: Pedro Fernandes Tavares The commissioning of the MAX IV synchrotron radiation facility in Lund marks the dawn of a new generation of storage-ring-based light sources. This new generation delivers orders-of-magnitude higher performance and allows realization of groundbreaking experiments on a variety of systems and materials at the atomic and molecular levels. This talk reviews the conceptual basis of the MAX IV design, summarizes the most recent accelerator commissioning results and explores future development paths for the MAX IV light sources aimed at achieving the diffraction limit at hard X-ray wavelengths. [Preview Abstract] |
Friday, March 17, 2017 9:48AM - 10:24AM |
X40.00004: New Research Opportunities with PAL-XFEL Facility Invited Speaker: In Ko PAL-XFEL project is aiming to produce 0.1 nm coherent X-ray laser to photon beam users. In order to produce such photons, there are 10-GeV electron linac based on S-band normal conducting accelerating structures and a 150-m long out-vacuum undulator system. The project was started in April 2011, and the 1.11 km-long building was completed in February 2015. The installation of 10-GeV linac, undulator systems, and beamlines has been completed by the end of 2015. The operation permit was issued on April 12, 2016, and the beam commissioning was started immediately. On April 25, the linac has achieved to accelerate 10-GeV electron beams from RF photocathode electron gun. By November 2016, the commissioning has reached to obtain 0.15 nm lasing. Further improvements about the photon intensity and the beam stability are under purse. In this talk, the details of constructions and commissionings will be introduced. Potential applications of ultra-short pulsed, coherent X-rays will be introduced with the emphasis on the structural molecular biology and the ultra-fast chemical dynamics in the range of femtoseconds. [Preview Abstract] |
Friday, March 17, 2017 10:24AM - 11:00AM |
X40.00005: SESAME: an opportunity for science in the Middle-East Invited Speaker: Giorgio Paolucci SESAME, the Synchrotron Radiation Laboratory of the Middle East, is becoming reality. As of November 2016, the injector has been commissioned, the storage ring is in an advanced state of installation and it is expected that two beamlines (XAFS/XRF and IR) will start producing scientific results in 2017. The talk will present the status of the facility and will illustrate its scientific objectives. The expected social and cultural impact of the project in the tumultuous Middle East Region will also be highlighted. [Preview Abstract] |
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