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| TUBPL03 | Experimental Data Transfer System BENTEN at SPring-8 | experiment, synchrotron, radiation, operation | 702 |
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Recently, there are strong demands on open data to promote data science like material informatics. At SPring-8, we have been operated data transfer system for open data of XAFS measurements since 2013* with the second in the world for amount data**. However, it was difficult to satisfy demands such as generic uses in experimental stations and data federation with other facilities. To overcome these, we newly developed data transfer system BENTEN. BENTEN provides easy-to-use and unified interface with REST API for data access from both inside and outside SPring-8. At SPring-8, proposal number is assigned for each experiment and members in the proposal are defined in DB. BENTEN can also realize restricted data access with the members using authentication and the DB. Data registration was performed with metadata such as experimental conditions and samples. Various metadata in the experiments can be easily defined. To achieve flexible data access with full-text search, we used Elasticsearch as metadata store. We began operation of BENTEN and open access of XAFS data since March this year. We plan to utilize BENTEN to promote open data and data science also with other experimental data.
*H. Sakai et al., Proc. of ICALEPCS 2013, p.577-579 **K. Asakura et al., J. Synchrotron Rad. (2018), 25, p.967-971 |
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Slides TUBPL03 [5.165 MB] | ||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2019-TUBPL03 | ||
| About • | paper received ※ 28 September 2019 paper accepted ※ 10 October 2019 issue date ※ 30 August 2020 | ||
| Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| WEPHA096 | Timing Signal Distribution for Synchrotron Radiation Experiments Using RF Over White Rabbit | timing, experiment, radiation, synchrotron | 1316 |
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In synchrotron radiation experiments, some measurements such as nuclear resonant scattering, time-of-flight, and time-resolved measurements necessitate an RF clock and fundamental revolution frequency (zero-address) signals synchronized with a storage ring. Currently, these timing signals are delivered directly over dedicated cables from an accelerator timing station to each experimental station. Considering the upcoming IoT era, it is preferable that these signals can be distributed over a network based on digital technology. Therefore, I am building a proof of concept system (PoCS) that will achieve distributions of the 508.58 MHz clock and the zero-address signals synchronized with the storage ring using RF over White Rabbit*. The PoCS consists of a master node, which receives the RF clock and the zero-address signals from the accelerator, and two slave nodes which generate timing signals near experimental stations. Each node employs a SPEC** board and a new FMC DDS***. The slave node will be able to output the RF clock with the arbitrary division rate and phase after reproducing the 508.58 MHz clock. This paper will describe the achieved functions and performance of the PoCS.
*https://ohwr.org/project/wr-d3s **https://ohwr.org/project/spec ***https://ohwr.org/project/fmc-dac-600m-12b-1cha-dds |
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Poster WEPHA096 [2.200 MB] | ||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2019-WEPHA096 | ||
| About • | paper received ※ 02 October 2019 paper accepted ※ 10 October 2019 issue date ※ 30 August 2020 | ||
| Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||