| Paper | Title | Page |
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| TUB003 | Event-Synchronized Data-Acquisition System for SPring-8 XFEL | 69 |
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| We report the status and the upgrade of the event-synchronized data-acquisition system for the accelerator control of XFEL/SPring-8. Because the XFEL is composed of a linac, most of the equipment is driven with the pulsed operation. The stability of equipment is critically important to achieve/stabilize the FEL lasing. We need a fast data-acquisition system to take a set of data from RF signals and beam monitor signals synchronizing with the same electron beam shots. For this purpose, the event-synchronized data-acquisition system has been introduced to the control system of the SCSS test accelerator, an XFEL prototype machine. The system consists of a data filling computer, a relational data base server, VME-based shared memory boards and distributed shared memory network. So far total of 54 signals from the beam monitoring system are successfully collected synchronizing with the 60 Hz of beam operation cycles. The accumulated data was utilized for the fast feedback correction of beam trajectories and energy quite effectively. Signals from the RF systems will be taken by the upgraded data-acquisition system utilizing the distributed memory-cache system. | ||
| TUP008 | Development of High Resolution Large Display for SPring-8 Central Control Room | 111 |
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We developed a large size high resolution display wall for SPring-8 central control room. The display wall consists of twenty-four inexpensive LCD displays that are controlled by personal computers. A PC-cluster consists of six personal computers interconnected by Ethernet drives twenty four 20.1-inch(1600 x 1200pixel) LCD displays. Those displays are arranged into 8x3 segment to achieve 46 million pixels(12800 x 3600pixel) resolution. A software XDMX* handles 24 displays as one X-Window server. This paper describes construction, configuration and testing of the high resolution display wall.
*XDMX:Xdmx(Distributed Multihead X) is multi-head support software for some attached displays to personal computers. |
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Poster | |
| WEP017 | Design of an XFEL Beamline DAQ System | 438 |
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| We have designed the control and the data acquisition system for the SPring-8 XFEL beamlines. The XFEL generates ultra-short pulsed coherent X-ray laser with the 60Hz beam repetition rate. Two-dimensional x-ray detectors are under development for X-ray detection. The data acquisition system for the detectors has to synchronize with the accelerator beam operation cycle to obtain correlations between incident X-ray and experimental data. The tagging system that records event numbers in the measurement data is especially important. The key technologies to make a success of the DAQ system of XFEL beamline are a tagging system of the 60Hz X-ray pulse, a real-time compression of fast massive data and low-latency network for data transfer. Both the network system of 3~4 Gbps bandwidth and the storage system with a near petabyte will be required in the initial operation phase of the XFEL project. At first, we developed a FPGA based tagging board that delivers tag numbers of X-ray pulse shots with parallel and serial interfaces. A first test system will be assembled by early 2010. | ||
| WEP020 | Life Cycle Management System for Accelerator Equipment | 444 |
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| We have developed life cycle management system for accelerator equipment. It manages whole life cycle of equipment used in accelerators from production to scrapping. The key component of the system is labels two dimensional bar code (QR-code) sticked on equipment at the production time. A dedicated device reads ten digit serial number on the label at every event on the equipment i.e. production, delivery, temporary stock, installation, repair, re-installation and scrapping. Labels sticked on wall or floor of the building manages the location of equipment. A relational database management system (RDBMS) stores data. Users can access data from the web interface. Web based GIS (Geographic Information System) provides interactive map to display location of equipment. Documentations on equipment are also manged by the RDBMS. We present the design, implementation and operation of the system. | ||
| WEP069 | Beam Monitor System Controller for XFEL/SPring-8 | 534 |
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| We have developed a controller for the beam monitor system of XFEL/SPring-8. The control items are the electronics of a beam position monitor (BPM) and a current transformer (CT), the actuator of a screen monitor (SCM) and the stepper motors of a SCM lens system and a beam collimator. To operate such complicated devices, we designed a control system based on a programmable logic controller (PLC). The PLC enables us to implement complex commands easily. For the communication between the PLC and other equipments, we employed FL-net (a protocol to communicate with computers) and DeviceNet (a connection with peripheral devices). Since FL-net is strongly supported by MADOCA, the official framework of SPring-8, we can easily integrate the PLC into the upper level system. DeviceNet is used in the electronics of the BPM and the CT and in the motor controllers of the SCM and the collimator. We newly developed a DeviceNet-based motor controller to satisfy our complicated requirements. Another multi-wire cable is equipped to manipulate the SCM actuator and so on. We tested the beam monitor controller at the SCSS test accelerator and confirmed that it worked well. | ||
| THP050 | RF Test Stand Control System for XFEL/SPring-8 | 762 |
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| The X-ray free electron laser (XFEL) facility is under construction at SPring-8. An rf test stand was build for the XFEL to assure performance of the delivered rf components under the high-power condition and to establish a conditioning procedure for stable operation with design rf power. In addition, the test stand is used to confirm a performance of a low-level rf system, a precise water temperature control system, a vacuum system and an rf high power system. In this paper we describe a software framework to control those equipment and test results of a newly developed software component include device drivers with Solaris 10 for x86. |