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| WEPHA136 |
The Software-Based Machine Protection System Using EPICS in J-PARC MR |
1418 |
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- K.C. Sato, N. Kamikubota, T. Kimura, S. Yamada, N. Yamamoto
J-PARC, KEK & JAEA, Ibaraki-ken, Japan
- S.Y. Yoshida
Kanto Information Service (KIS), Accelerator Group, Ibaraki, Japan
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In J-PARC, a Machine Protection System (MPS) stops accelerator beam operation automatically when an interlock signal comes. Normal MPS accepts interlock signals by hard-wire, but a software-based MPS, called "Soft-MPS", uses only EPICS PVs without wiring. A PLC controller running Linux was introduced to watch at some EPICS PVs over Ethernet, and outputs Soft-MPS signals to the MPS unit after logical calculates. There are 2 reasons of using Soft-MPS. (1) To install interlock signals rapidly. This type of Soft-MPS will switch to hard-wire later. (2) To use non-hardware parameters: for example, machine operation modes, beam bunch information, etc. From the first Soft-MPS setup in 2018 spring, 9 Soft-MPS signals are currently used. As more Soft-MPS signals are expected in the future, we need to discuss the policy.
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Poster WEPHA136 [1.544 MB]
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-ICALEPCS2019-WEPHA136
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| About • |
paper received ※ 28 October 2019 paper accepted ※ 03 November 2019 issue date ※ 30 August 2020 |
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