Proceedings of the 5th Annual Meeting of Particle Accelerator Society of Japanand the 33rd Linear Accelerator Meeting in Japan (August 6-8, 2008, Higashihiroshima, Japan)

DEVELOPEMT OF OPT-VME BOARDS TOWARDS THE UNIFICATION
OF OPTICAL-LINKED REMOTE I/O SYSTEM AT SPRING-8,A)

B)

A)

A)

A)

Takemasa Masuda1 , Toru Fukui , Togo Kudo , Toru Ohata , Ryotaro Tanaka
A)
JASRI/SPring-8, 1-1-1 Kouto, Sayo, Hyogo, 679-5198
B)

RIKEN/SPring-8, 1-1-1 Kouto, Sayo, Hyogo, 679-5148

Abstract
SPring-8 control system employs a large number of optical-linked remote I/O boards for the purposes of noise
immunity enhancement, concentration of input/output signals and so on. At present, we utilize four kinds of opticallinked remote I/O systems, NIO, MTC-UDC, RIO and OPT-VME, due to the different construction phases of theaccelerators. NIO and MTC-UDC used in the booster are already unavailable because they are discontinued. Then wewill replace them using OPT-VME system developed by SPring-8. We have developed two kinds of new OPT-VMEboards. One is a substitute remote board of NIO for the booster steering magnet power supplies. By changing the FPGAlogic, the new remote board will also work as a substitution of the RIO Type-A remote board for the storage-ringsteering magnet power supplies. The other is a 1:11 multiplexer board to enhance channel density of the OPT-VMEsystem. The multiplexer board can be also used as a 12 ports VME master board. The successful development shows
the unification capability of the optical-linked remote I/O systems at SPring-8.

SPring-8

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Availability”, Proc. Of ICALEPCS’03, Gyeongju, Korea,
2003[2] T.Fukui, et al. “Applications of Reconfigurable Logic
Devices for Accelerator Controls”, Proc. Of ICALEPCS’03,
Gyeongju, Korea, 2003
[3] http://www.altera.co.jp/-778-