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Title |
Other Keywords |
Page |
| WEPL004 |
Accurate Measurement of the Beam Energy in the CLS Storage Ring
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storage-ring, feedback, energy-calibration, vacuum |
36 |
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- J. M. Vogt, J. C. Bergstrom, S. Hu
CLS, Saskatoon, Saskatchewan
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Resonant spin depolarization was used at the Canadian Light Source (CLS) to measure the energy of the beam in the storage ring with high accuracy. This method has been employed successfully at several other synchrotrons in the past. At the Canadian Light Source, however, resonant spin depolarization is an intrinsic capability of the transverse feedback system, which is based on a Libera Bunch-by-Bunch unit. The Bunch-by-Bunch system used at the CLS was customized to include a bunch cleaning feature based on a frequency-modulated oscillator. By setting the frequency of this oscillator to the spin tune, the beam can be depolarized and the effect can be observed by watching the life time of the beam. No changes have to be made to the permanent setup of the transverse feedback system, and no special instrumentation is required to make the energy measurement.
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Poster
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| WEPL016 |
Status, Applicability and Perspective of TINE-powered Video System, Release 3
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controls, laser, diagnostics, monitoring |
61 |
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- S. Weisse, D. Melkumyan
DESY Zeuthen, Zeuthen
- P. Duval
DESY, Hamburg
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Experience has shown that imaging software and hardware installations at accelerator facilities needs to be changed, adapted and updated on a semi-permanent basis. On this premise, the component-based core architecture of Video System 3 was founded. In design and implementation, emphasis was, is, and will be put on flexibility, performance, low latency, modularity, interoperability, use of open source, ease of use as well as reuse, good documentation and multi-platform capability. Special effort was spent on shaping the components so that they can easily fit into small-scale but also into area-wide installations. Here, we describe the current status of the redesigned, almost feature-complete Video System, Release 3. Individual production-level use-cases at Hasylab*, PITZ** and Petra III*** diagnostic beamline will be outlined, demonstrating the applicability at real world installations. Finally, the near and far future expectations will be presented. Last but not least it must be mentioned that although the implementation of Release 3 is integrated into the TINE control system****, it is modular enough so that integration into other control systems can be considered.
* http://hasylab.desy.de
** http://pitz.desy.de
*** http://petra3.desy.de
**** http://tine.desy.de
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Poster
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| WEPL018 |
The FERMI@Elettra CCD image acquisition system
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controls, background, laser, diagnostics |
64 |
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- G. Gaio, F. Asnicar, L. Pivetta, G. Scalamera
ELETTRA, Basovizza
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FERMI@Elettra is a new 4th generation light source based on a linac-driven free electron laser which is currently being built in Trieste, Italy. The CCD image acquisition system is a fundamental diagnostic tool for the commissioning of the new accelerator. It is used for the characterization and tuning of the laser, electron and photon beams. The Tango based software architecture,the soft real-time performance and the embedded image processing algorithms are described.
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Poster
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| WEPL028 |
TINE/ACOP state-of-the-art Video Controls at Petra III
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background, controls, diagnostics, emittance |
82 |
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- J. Bobnar, I. Kriznar, T. Kusterle
Cosylab, Ljubljana
- P. Duval, G. Kube, J. Wilgen
DESY, Hamburg
- D. Melkumyan, S. Weisse
DESY Zeuthen, Zeuthen
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The TINE/ACOP video system is a complete state-of-the-art solution for streaming beam video, featuring live analysis and live beam image display inside ACOP video component, which can be placed in any Java Swing panel. After a number of iterative improvements and embellishments, the system has matured to stable production quality in the beginning of year 2010. The system consists of the following components: a TINE device server captures a video image [1] and encodes it to the standard TINE IMAGE format. The TINE transport layer streams the IMAGE objects to clients as it would any other data chunk [2]. The Java TINE client passes the IMAGE object through the analysis Java bean, which then performs fast statistical analysis of beam position and size. The streamed image plus analysis data are displayed in the Java video component, which is part of the ACOP components. Additional capabilities are background subtraction, automatic or manual threshold subtraction, enhanced coloring and saving snapshot as PNG file. Optionally, the analysis bean can be used standalone as a common service and results are further distributed via an intermediate TINE server written in Java.
[1] S. Weisse et al., "Status of a versatile Video System
at PITZ, DESY-2 and EMBL Hamburg", ICALEPCS07, TN.
[2] S. Weisse et al., “TINE Video System: proceedings on redesign”,
ICALEPCS 09, Kobe.
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Poster
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| THPL007 |
Remote Access to a Scanning Electron Microscope using Science Studio
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controls, focusing, synchrotron, vacuum |
136 |
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- D. G. Maxwell, E. Matias
CLS, Saskatoon, Saskatchewan
- M. Bauer, M. Fuller, S. McIntryre, T. W. Simpson
UWO, London, Ontario
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Science Studio is a web portal, and framework, that provides scientists with a platform to collaborate in distributed teams on research projects, and to remotely access the resources of research facilities located across Canada. The Western Nanofabrication Facility is located at the University of Western Ontario and houses a variety of instruments for lithography, deposition and characterization. One of these instruments is an Oxford Instruments X-Ray System fitted to a Scanning Electron Microscope. This x-ray system has been integrated into Science Studio. This allows users to remotely access the system and upload data into the experiment management system. Remote control of the instrument is provided using a remote desktop, so users have access to the full capabilities of the instrument. Through Science Studio, access control and session management are also provided for this instrument.
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Poster
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| THPL023 |
Data Acquisition and Studies of Vibration Motion in TLS Beamlines
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photon, site, controls, feedback |
177 |
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- P. C. Chiu, J. Chen, Y. K. Chen, K. T. Hsu, K. H. Hu, C. H. Kuo
NSRRC, Hsinchu
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TPS (Taiwan Photon Source) is being under construction while TLS (Taiwan Light Source) is still on operation at the same NSRRC site. It was observed that the stability of photon beam intensity (Io) of TLS seemed a little deteriorated at daytime, when civil work is busy, compared to the nighttime. The intensity changes at different beamlines, however, aren’t consistent with each other in each time, furthermore not so agreeing with the electron beam. Therefore, to correlate how the ground vibration due to civil construction effected on beam behaviour, the vibration measurement system is integrated into the existing TLS control system. The system will support waveform acquisition which could be acquired on demand. Meanwhile, realtime 10 Hz rms detector which could be archived continuously is also considered to be built in the future.
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Poster
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