| Paper | Title | Page |
|---|---|---|
| MOPPC128 | Real-Time Process Control on Multi-Core Processors | 407 |
|
||
| A real-time control is an essential for a low level RF and timing system to have beam stability in the accelerator operation. It is difficult to optimize priority control of multiple processes with real-time class and time-sharing class on a single-core processor. For example, we can’t log into the operating system if a real-time class process occupies the resource of a single-core processor. Recently multi-core processors have been utilized for equipment controls. We studied the process control of multiple processes running on multi-core processors. After several tunings, we confirmed that an operating system could run stably under heavy load on multi-core processors. It would be possible to achieve real-time control required milliseconds order response under the fast control system such as an event synchronized data acquisition system. Additionally we measured the response performance between client and server processes using MADOCA II framework that is the next-generation MADOCA. In this paper we present about the tunings for real-time process control on multi-core processors and performance results of MADOCA II. | ||
|
Poster MOPPC128 [0.450 MB] | |
| MOPPC129 | MADOCA II Interface for LabVIEW | 410 |
|
||
| LabVIEW is widely used for experimental station control in SPring-8. LabVIEW is also partially used for accelerator control, while most software of the SPring-8 accelerator and beamline control are built on MADOCA control framework. As synchrotron radiation experiments advances, there is requirement of complex data exchange between MADOCA and LabVIEW control systems which was not realized. We have developed next generation MADOCA called MADOCA II, as reported in this ICALEPCS (T.Matsumoto et.al.). We ported MADOCA II framework to Windows and we developed MADOCA II interface for LabVIEW. Using the interface, variable length data can be exchanged between MADOCA and LabVIEW based softwares. As a first application, we developed a readout system for an electron beam position monitor with NI's PCI-5922 digitizers. A client software sends a message to a remote LabVIEW based digitizer readout software via the MADOCA II midlleware and the readout system sends back waveform data to the client. We plan to apply the interface various accelerator and synchrotron radiation experiment controls. | ||
| TUPPC014 | Development of SPring-8 Experimental Data Repository System for Management and Delivery of Experimental Data | 577 |
|
||
| SPring-8 experimental Data Repository system (SP8DR) is an online storage service, which is built as one of the infrastructure services of SPring-8. SP8DR enables experimental user to obtain his experimental data, which was brought forth at SPring-8 beamline, on demand via the Internet. To make easy searching for required data-sets later, the system stored experimental data with meta-data such as experimental conditions. It is also useful to the post-experiment analysis process. As a framework for data management, we adopted DSpace that is widely used in the academic library information system. We made two kind of application software for registering an experimental data simply and quickly. These applications are used to record metadata-set to SP8DR database that has relations to experimental data on the storage system. This data management design allowed applications to high bandwidth data acquisition system. In this presentation, we report about the SPring-8 experimental Data Repository system that began operation in SPring-8 beamline. | ||
| TUPPC015 | On-line and Off-line Data Analysis System for SACLA Experiments | 580 |
|
||
|
The X-ray Free-Electron Laser facility, SACLA, has delivered X-ray laser beams to users from March 2012 [1]. Typical user experiments utilize two-dimensional-imaging sensors, which generate 10 MBytes per accelerator beam shot. At 60 Hz beam repetition, the experimental data at the rate of 600 MBytes/second are accumulated using a dedicate data-acquisition (DAQ) system [2]. To analyze such a large amount of data, we developed data-analysis system for SACLA experiments. The system consists of on-line and off-line sections. The on-line section performs on-the-fly filtering using data handling servers, which examine data qualities and records the results onto the database with event-by-event basis. By referring the database, we can select good events before performing off-line analysis. The off-line section performs precise analysis by utilizing high-performance computing system, such as physical image reconstruction and rough three-dimensional structure analysis of the data samples. For the large-scaled image reconstructions, we also plan to use external supercomputer. In this paper, we present overview and future plan of the SACLA analysis system.
[1] T. Ishikawa et al., Nature Photonics 6, 540-544 (2012). [2] M. Yamaga et al., ICALEPCS 2011, TUCAUST06, 2011. |
||
|
|
Poster TUPPC015 [10.437 MB] | |
| TUCOCB01 | Next-Generation MADOCA for The SPring-8 Control Framework | 944 |
|
||
|
MADOCA control framework* was developed for SPring-8 accelerator control and has been utilized in several facilities since 1997. As a result of increasing demands in controls, now we need to treat various data including image data in beam profile monitoring, and also need to control specific devices which can be only managed by Windows drivers. To fulfill such requirements, next-generation MADOCA (MADOCA II) was developed this time. MADOCA II is also based on message oriented control architecture, but the core part of the messaging is completely rewritten with ZeroMQ socket library. Main features of MADOCA II are as follows: 1) Variable length data such as image data can be transferred with a message. 2) The control system can run on Windows as well as other platforms such as Linux and Solaris. 3) Concurrent processing of multiple messages can be performed for fast control. In this paper, we report on the new control framework especially from messaging aspects. We also report the status on the replacement of the control system with MADOCA II. Partial control system of SPring-8 was already replaced with MADOCA II last summer and has been stably operated.
*R.Tanaka et al., “Control System of the SPring-8 Storage Ring”, Proc. of ICALEPCS’95, Chicago, USA, (1995) |
||
|
Slides TUCOCB01 [2.157 MB] | |