| Paper | Title | Other Keywords | Page |
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| WEPOPRPO11 | Recent Improvements to the RIKEN RI Beam Factory Control System | controls, ion, power-supply, EPICS | 31 |
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| RIKEN Radioactive Isotope Beam Factory (RIBF) is a cyclotron-based heavy-ion accelerator facility for producing unstable nuclei and studying their properties. Many components of the RIBF accelerator complex are controlled by using the Experimental Physics and Industrial Control System (EPICS). We will here present recent progress of the EPICS-based RIBF control system. One is the improvement of the alarm system to support a stable beam delivery during a long-term experiment. We introduced the Control System Studio (CSS) to our control system and started to monitor the vacuum systems and magnet power supplies in order to avoid the interruption of the beam supply due to the accident. The other is renewal of the system for controlling up to 900 magnet power supply units with several different types of controllers at once by a simple program. Since the configuration of the magnet power supplies has become very complicated in accordance with the several kinds of extensions and updates of the RIBF accelerator complex, we have developed the new control programs in order to simplify the recording and the setting data of the magnet power supplies. | |||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-PCaPAC2016-WEPOPRPO11 | ||
| Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| WEPOPRPO24 | VDE - Virtual Documentation Environment | ion, EPICS, controls, software | 53 |
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| At LNLS hundreds of motors are used at the beamlines to move parts, equipment or full systems, according to different profile, synchronization and accuracy requirements. Historically, the documentation of motion axes of the LNLS beamlines was either done only at the moment of their installation and commissioning, or not properly done at all. Thus, after some time, keeping track of changes and performing maintenance could turn out to be very challenging, and there was the clear need of some solution to ensure that every change in motors would be reflected in their documentation. In 2012 the migration of the beamlines control system to the EPICS platform pushed the development of a new documentation system. In a first version, it consisted of a smart spreadsheet that generated the EPICS configuration files automatically. Later evolved to a web-based system the VDE, which allows the staff to change the motion axis parameters without the need of a deep knowledge about EPICS and ensures the complete motion axis documentation intuitively. Also, changes in motors will not work in EPICS if the documentation is not updated, guaranteeing the link between documentation and the real system. | |||
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Poster WEPOPRPO24 [1.677 MB] | ||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-PCaPAC2016-WEPOPRPO24 | ||
| Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| THPOPRPO05 | Implementation of a Precision Logarithmic Ammeter | ion, electron, operation, controls | 97 |
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| A precision and low cost ammeter is in development for the acquisition of sensor signals such as photodiodes, gold mesh (by photoelectron effect) and ionization chambers. One of the problems of conventional ammeters is the automatic scale selection, which hinders many measurements performed in ample energy range. The ammeter in development is based on a different methodology than present on most commercial systems, using a logarithmic amplifier. This choice of can provide a logarithmic response output in the range of pico to milliamperes. In addition, the system will have a trigger input for synchronism with external events and a Ethernet interface with EPICS driver. The electronic board is in development by LNLS, and is being installed and tested at the TGM Beamline. | |||
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Poster THPOPRPO05 [1.375 MB] | ||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-PCaPAC2016-THPOPRPO05 | ||
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| THPOPRPO11 | Processing SPE Files from Princeton Instruments during Data Acquisition in LNLS | ion, controls, synchrotron, detector | 108 |
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The beamline of Dispersive X-ray Absorption Spectroscopy, DXAS, in LNLS uses a Princeton Instruments CCD, PyLoN, to acquire spectra of materials under analysis. Such camera produces an SPE binary file. Some Python scripts were developed to display absorbance and x-ray magnetic circular dichroism (XMCD) during the experiment. Firstly, using WinspecUtils.py* module we extract the data in a 2D array (intensities by pixels) from an SPE file of radiant flux received by a material (I0), then, while spectra of radiant flux transmitted by that material (I), is being acquired, their data are extracted from a temporary SPE file. With I and I0 we calculate absorbance (mu) = ln(I0/I) and plot it with matplotlib** of Python . For XMCD same data extraction is performed, but each cycle has eight spectra with magnet field varying its orientation: + - - + - + + -; and the calculation is XMCD = {AVG[mu(norm)(+)] - AVG[mu(norm)(-)]}. Calculated XMCD is also plot. So, with such information of absorbance and XMCD being displayed during the experiment the users could quickly act to fix any problem.
* WinspecUtils.py module: version shared by Kasey Russell (krussell@post.harvard.edu), based on other version of James Battat (jbattat@post.harvard.edu) ** matplotlib: http://matplotlib.org |
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Poster THPOPRPO11 [0.489 MB] | ||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-PCaPAC2016-THPOPRPO11 | ||
| Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||