beamline

CERN announces winners of 2015 beamline for schools contest

CERN today announced the winners of its 2015 Beamline for schools competition. Two teams of high-school students have been selected to travel to CERN in September to carry out their own experiments using a CERN accelerator beam. The winners, the “Leo4G” team from Liceo Scientifico Leonardo da Vinci School in Florence, Italy and the “Accelerating Africa” […]

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Interview mit Kevin Fuchs über seine neue Arbeit MY BEAMLINE

—> http://oks-lab.ostkreuzschule.de/?p=13322

A wealth of data for Beamline for schools: Cian O'Luanaigh CERN Director-General Rolf Heuer (white shirt, by door) visited the student teams and their CERN helpers at the T9 beamline (Image: T. Pritchard/CERN) After a week of shifts on the T9 beamline at CERN, two teams of high-school students – the winners of CERN’s first ever “Beamline for schools” contest – are ready […]

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arxiv.org
[1508.06726] SPEC application for achieving inelastic X-ray scattering experiment in the SSRF

[ Authors ]
Xuying Lan, Ke Yang, Dongxu Liang, Shuai Yan, Chengwen Mao, Aiguo Li, Jie Wang
[ Abstract ]
In order to carry out inelastic X-ray scattering (IXS) experiment at BL15U1 beamline of Shanghai Synchrotron Radiation Facility (SSRF), the data acquisition and control system based on SPEC software has been developed. The IXS experimental method needs linkage control of monochromator, silicon drift detector (SDD) and ionization chamber on continuous segment-scan mode with variable step size, and gains the data of energy, spectrum and light intensity synchronously. A method is presented for achieving this function which was not realized only by using SSCAN of Experimental Physics and Industrial Control System (EPICS). This paper shows work details including control system description, SPEC configurations for EPICS devices, macro definitions and applications in the BL15U1. An IXS experiment was executed by using the SPEC control system, its results prove that the method is feasible to perform the experiment.

arxiv.org
[1508.04200] Application of Mythen Detector In-situ XRD Study on The Thermal Expansion Behavior of Metal Indium

[ Authors ]
Rong Du, Zhongjun Chen, Quan Cai, Jianlong Fu, Yu Gong, Zhonghua Wu
[ Abstract ]
A Mythen detector has been equipped at the beamline 4B9A of Beijing Synchrotron Radiation Facility, which can be used for in-situ real-time measurement of X-ray diffraction (XRD) full profiles. In this paper, the thermal expansion behavior of metal indium has been studied by using the in-situ XRD technique with the Mythen detector. The indium film was heated from 30 to 160 {\deg}C with a heating rate of 2 {\deg}C/min. The in-situ XRD full-profiles were collected with a rate of one profile per 10 seconds. Rietveld refinement was used to extract the structural parameters. The results demonstrate that the thermal expansion of metal indium is nonlinear especially when the sample temperature was close to its melting point (156.5 {\deg}C). The expansion of a-axis and the contraction of c-axis of the tetragonal unit cell of metallic indium can be well described by biquadratic and cubic polynomials, respectively. The tetragonal unit cell presents a tendency to become cubic one with the increase of temperature but without detectable phase change. This study is not only beneficial to the application of metal indium, but also exhibits the capacity of in-situ time-resolved XRD experiments at the X-ray diffraction station of BSRF.

Planning Officer for the Accelerator Phase II Upgrade Project

Planning Officer for the Accelerator Phase II Upgrade Project

Job details

The ESRF is a multinational research institute, situated in Grenoble, France and financed by 21 mostly European countries. It operates a powerful synchrotron X-ray source with some 30 beamlines (instruments) covering a wide range of scientific research in fields such as biology and medicine, chemistry, earth and environmental sciences, materials, surface science and physics. The ESRF…

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Beamline for schools competition 2015 launches today

Sophie Hetherton (Video: CERN) CERN is famous for the Higgs boson discovery and the invention of the World Wide Web, but there’s much more to the laboratory than that. A large part of CERN’s research and development is carried out at so-called fixed-target beamlines. These projects range from investigating the inner workings of protons to […]

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