PCaPAC2014 - List of Authors (Fukui, T.)

Paper

Title

Page

A Prototype Data Acquisition System of Abnormal RF Waveform at SACLA

19

M. Ishii, M. Kago
JASRI/SPring-8, Hyogo-ken, Japan
T. Fukui
RIKEN SPring-8 Center, Innovative Light Sources Division, Hyogo, Japan
T. Maruyama
RIKEN/SPring-8, Hyogo, Japan
T. Ohshima
RIKEN SPring-8 Center, Sayo-cho, Sayo-gun, Hyogo, Japan
M. Yoshioka
SES, Hyogo-pref., Japan

At SACLA, an event-synchronized data acquisition system had been installed. The system collects shot-by-shot data, such as representative point data of the phase and amplitude of the rf cavity pickup signals, in synchronization with the beam operation cycle. In addition, rf waveform data is collected every 10 minutes. However a collection with several minutes cycle couldn’t catch an abnormal rf waveform that suddenly occurs. To overcome this problem, we have developed a system to capture waveform when some abnormal event occurs. The system consists of the VMEbus systems, a DAQ server, and a NoSQL database system, Cassandra. The VMEbus system detects an abnormal rf waveform, collects all related waveforms with same shot and sends to a DAQ server. All waveforms are stored Cassandra via the DAQ server. The DAQ server keeps data for 2 seconds from current time on memory to complement Cassandra’s eventual consistency model. We constructed a prototype DAQ system with a minimum configuration and checked its performance. We report the requirements and structure of the DAQ system and the test results in this paper.

Slides WCO204 [1.426 MB]

TCO205

Conceptual Design of the Control System for SPring-8-II

144

R. Tanaka, T. Matsushita, T. Sugimoto, R. Tanaka
JASRI/SPring-8, Hyogo-ken, Japan
T. Fukui
RIKEN SPring-8 Center, Innovative Light Sources Division, Hyogo, Japan

The SPring-8 storage ring was inaugurated 17 years ago in 1997. The storage ring is an 8-GeV synchrotron that functions as a third-generation light source, providing brilliant X-ray beams to a large number of experimental users from all over the world. In recent years, discussions have been held on the necessity of upgrading the current ring to create a diffraction-limited storage ring at the same location. Now, a plan to upgrade the storage ring, called SPring-8-II, has been launched. First, new beam optics capable of storing beams of 6 GeV was designed using a five-bend magnet system to obtain smaller electron beam emittance that would produce coherent X-rays that are brighter than those produced by the current ring. The design of a control system that would meet the performance requirements of the new ring has also started. Equipment control devices are based on factory automation technologies such as PLC and VME, whereas digital data handling with high bandwidths is realized using telecommunication technologies such as xTCA. In this paper, we report on the conceptual design of the control system for SPring-8-II on the basis of the conceptual design report proposed by RIKEN.

Slides TCO205 [7.572 MB]

Paper	Title	Page
WCO204	A Prototype Data Acquisition System of Abnormal RF Waveform at SACLA	19
	M. Ishii, M. Kago JASRI/SPring-8, Hyogo-ken, Japan T. Fukui RIKEN SPring-8 Center, Innovative Light Sources Division, Hyogo, Japan T. Maruyama RIKEN/SPring-8, Hyogo, Japan T. Ohshima RIKEN SPring-8 Center, Sayo-cho, Sayo-gun, Hyogo, Japan M. Yoshioka SES, Hyogo-pref., Japan
	At SACLA, an event-synchronized data acquisition system had been installed. The system collects shot-by-shot data, such as representative point data of the phase and amplitude of the rf cavity pickup signals, in synchronization with the beam operation cycle. In addition, rf waveform data is collected every 10 minutes. However a collection with several minutes cycle couldn’t catch an abnormal rf waveform that suddenly occurs. To overcome this problem, we have developed a system to capture waveform when some abnormal event occurs. The system consists of the VMEbus systems, a DAQ server, and a NoSQL database system, Cassandra. The VMEbus system detects an abnormal rf waveform, collects all related waveforms with same shot and sends to a DAQ server. All waveforms are stored Cassandra via the DAQ server. The DAQ server keeps data for 2 seconds from current time on memory to complement Cassandra’s eventual consistency model. We constructed a prototype DAQ system with a minimum configuration and checked its performance. We report the requirements and structure of the DAQ system and the test results in this paper.
	Slides WCO204 [1.426 MB]

TCO205	Conceptual Design of the Control System for SPring-8-II	144
	R. Tanaka, T. Matsushita, T. Sugimoto, R. Tanaka JASRI/SPring-8, Hyogo-ken, Japan T. Fukui RIKEN SPring-8 Center, Innovative Light Sources Division, Hyogo, Japan
	The SPring-8 storage ring was inaugurated 17 years ago in 1997. The storage ring is an 8-GeV synchrotron that functions as a third-generation light source, providing brilliant X-ray beams to a large number of experimental users from all over the world. In recent years, discussions have been held on the necessity of upgrading the current ring to create a diffraction-limited storage ring at the same location. Now, a plan to upgrade the storage ring, called SPring-8-II, has been launched. First, new beam optics capable of storing beams of 6 GeV was designed using a five-bend magnet system to obtain smaller electron beam emittance that would produce coherent X-rays that are brighter than those produced by the current ring. The design of a control system that would meet the performance requirements of the new ring has also started. Equipment control devices are based on factory automation technologies such as PLC and VME, whereas digital data handling with high bandwidths is realized using telecommunication technologies such as xTCA. In this paper, we report on the conceptual design of the control system for SPring-8-II on the basis of the conceptual design report proposed by RIKEN.
	Slides TCO205 [7.572 MB]