PCaPAC2012 - List of Authors (Furukawa, K.)

Paper

Title

Page

EPICS Channel Access Using WebSocket

7

A. Uchiyama
Sokendai, Ibaraki, Japan
K. Furukawa
KEK, Ibaraki, Japan
Y. Higurashi
RIKEN Nishina Center, Wako, Japan

Web technology is useful as a means to widely inform of accelerators and beam status.　For this purpose, WebOPI[1] as to web-based system using Ajax (Asynchronous JavaScript and XML) with EPICS was implemented by SNS. On the other hand, it is often necessary to perform the accelerator control from various locations as well as central control room during the beam operation and the maintenance.　However, it is not realistic to replace GUI-based operator interface (OPI) with Web-based system using Ajax technology because of interactive performance.　Therefore, as a next-generation OPI over the web using EPICS Channel Access (CA), we developed a client system based on WebSocket, which is a new protocol provided by Internet Engineering Task Force for Web-based system.　WebSocket is a web technology providing bi-directional, full-duplex communication channels over a single TCP connection.　By utlizing Node.js and WebSocket access library named Socket. IO, a WebSocket server was implemented. As a result, Web-based client systems became available not only in the central control room but also with various types of equipment for accelerator operation.
[1] http://sourceforge.net/apps/trac/cs-studio/wiki/webopi

WEPD26

Development of Fast Controls for Beam Wire Scanner for SuperKEKB

57

A. Roy
VECC, Kolkata, India
K. Furukawa, N. Iida
KEK, Ibaraki, Japan
T. Okazaki
EJIT, Hitachi, Ibaraki, Japan

Recent development towards the data acquisition system of the wire scanner (WS) systems of the SuperKEKB injector linac (LINAC) and beam transport lines (BT's) is described. A VME based system, comprised of charge sensitive ADC (CSADC) board, scaler board, DAC board and Event receiver board, has been installed. The primary aim of the system is to utilise global linac event timing system for synchronized and mode-dependent data acquisition. A set of EPICS device driver has been developed for new hardware e.g. CSADC, scaler and DAC boards. The combination of latest versions of firmware and EPICS device driver forμResearch Finland (MRF) Event receiver board is also evaluated and further incorporated in this system. The application software is developed for simultaneous acquisition of multiple beam mode data during multimode injection of the LINAC. The developed system is tested successfully after integrating with the existing wire scanner driving mechanism. The system enables the beam size measurements at four consecutive locations, that derive Twiss parameters and ensure the reliable beam transport to four downstream storage rings.

Poster WEPD26 [0.245 MB]

Paper	Title	Page
WECC02	EPICS Channel Access Using WebSocket	7
	A. Uchiyama Sokendai, Ibaraki, Japan K. Furukawa KEK, Ibaraki, Japan Y. Higurashi RIKEN Nishina Center, Wako, Japan
	Web technology is useful as a means to widely inform of accelerators and beam status.　For this purpose, WebOPI[1] as to web-based system using Ajax (Asynchronous JavaScript and XML) with EPICS was implemented by SNS. On the other hand, it is often necessary to perform the accelerator control from various locations as well as central control room during the beam operation and the maintenance.　However, it is not realistic to replace GUI-based operator interface (OPI) with Web-based system using Ajax technology because of interactive performance.　Therefore, as a next-generation OPI over the web using EPICS Channel Access (CA), we developed a client system based on WebSocket, which is a new protocol provided by Internet Engineering Task Force for Web-based system.　WebSocket is a web technology providing bi-directional, full-duplex communication channels over a single TCP connection.　By utlizing Node.js and WebSocket access library named Socket. IO, a WebSocket server was implemented. As a result, Web-based client systems became available not only in the central control room but also with various types of equipment for accelerator operation. [1] http://sourceforge.net/apps/trac/cs-studio/wiki/webopi

WEPD26	Development of Fast Controls for Beam Wire Scanner for SuperKEKB	57
	A. Roy VECC, Kolkata, India K. Furukawa, N. Iida KEK, Ibaraki, Japan T. Okazaki EJIT, Hitachi, Ibaraki, Japan
	Recent development towards the data acquisition system of the wire scanner (WS) systems of the SuperKEKB injector linac (LINAC) and beam transport lines (BT's) is described. A VME based system, comprised of charge sensitive ADC (CSADC) board, scaler board, DAC board and Event receiver board, has been installed. The primary aim of the system is to utilise global linac event timing system for synchronized and mode-dependent data acquisition. A set of EPICS device driver has been developed for new hardware e.g. CSADC, scaler and DAC boards. The combination of latest versions of firmware and EPICS device driver forμResearch Finland (MRF) Event receiver board is also evaluated and further incorporated in this system. The application software is developed for simultaneous acquisition of multiple beam mode data during multimode injection of the LINAC. The developed system is tested successfully after integrating with the existing wire scanner driving mechanism. The system enables the beam size measurements at four consecutive locations, that derive Twiss parameters and ensure the reliable beam transport to four downstream storage rings.
	Poster WEPD26 [0.245 MB]