Furukawa, Y.

Paper	Title	Page
TUB003	Event-Synchronized Data-Acquisition System for SPring-8 XFEL	69
	M. Yamaga, Y. Furukawa, T. Hirono, M. I. Ishii, T. Masuda, T. Ohata, R. Tanaka, A. Yamashita JASRI/SPring-8, Hyogo-ken T. Fukui, N. Hosoda RIKEN/SPring-8, Hyogo
	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.
WEP017	Design of an XFEL Beamline DAQ System	438
	T. Ohata, Y. Furukawa, T. Hirono, R. Tanaka, A. Yamashita JASRI/SPring-8, Hyogo-ken T. Hatsui, T. Ishikawa, M. Yabashi RIKEN/SPring-8, Hyogo
	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.
WED002	Development of a Remote Experiment Control System	615
	Y. Furukawa, K. Hasegawa JASRI/SPring-8, Hyogo-ken D. Maeda, G. Ueno RIKEN Spring-8 Harima, Hyogo
	A remote experiment control system is a long desired system for synchrotron radiation facilities. For coexistence of radiation and physical safety, operationand data security, careful consideration is required. The beamline interlock system provides radiation safety with radiation shielding hutches. Under the condition in which synchrotron radiation can be introduced into the hutch, the interlock system guarantees that there are no person inside the hutch. Using the information from the radiation safety interlock system, physical safety system has been built. For the operation and data security, we made a custom SSL serverwith bidirectional authentication. The server replays commands from remote user's program to the experiment control computer. A client certification file contains an information about remote user's experiment, the SSL server accepts commands from the authorized user. With a video streaming, remote user can watch samples and/or experimental equipments. A system latency is small enough, the remote users can perform their experiment as if they were beside the beamline. The system is under testing and it will be opened users in this fiscal year.
	Slides