PCaPAC2022 - List of Authors (Sato, K.C.)

Paper	Title	Page
WEO22	Applications of Timing Read-Back System in J-PARC Main Ring	8
	M. Yang, N. Kamikubota, K.C. Sato J-PARC, KEK & JAEA, Ibaraki-ken, Japan N. Kikuzawa JAEA/J-PARC, Tokai-mura, Japan Y. Tajima KIS, Ibaraki, Japan
	Japan Proton Accelerator Research Complex (J-PARC) timing system has been in operation since 2006. Over the past 16 years, there were trigger-failure events, and some of which seriously affected the operation of J-PARC ac-celerator, especially at Main Ring. To troubleshoot the source of such events more quickly, we decided to devel-op a timing read-back system to read back distributed timing signals at the device side. A PLC-type triggered scaler module was developed as a key of the system. It can count number of pulses in an accelerator cycle and store the counts in a momentary array. Using the module, customized read-back applications for various timing-related signals have been developed: (a) read-back a 25-Hz trigger clock, (b) read-back a pulsed bending magnet trig-ger, (c) read-back a magnet power-supply trigger. These applications were implemented successfully in J-PARC Main Ring, and demonstrated as countermeasure against past trigger-failure events. More details will be given in the paper.
	Slides WEO22 [10.587 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-PCaPAC2022-WEO22
About •	Received ※ 02 October 2022 — Revised ※ 04 October 2022 — Accepted ※ 15 February 2023 — Issue date ※ 20 February 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Applications of Timing Read-Back System in J-PARC Main Ring

8

M. Yang, N. Kamikubota, K.C. Sato
J-PARC, KEK & JAEA, Ibaraki-ken, Japan
N. Kikuzawa
JAEA/J-PARC, Tokai-mura, Japan
Y. Tajima
KIS, Ibaraki, Japan

Japan Proton Accelerator Research Complex (J-PARC) timing system has been in operation since 2006. Over the past 16 years, there were trigger-failure events, and some of which seriously affected the operation of J-PARC ac-celerator, especially at Main Ring. To troubleshoot the source of such events more quickly, we decided to devel-op a timing read-back system to read back distributed timing signals at the device side. A PLC-type triggered scaler module was developed as a key of the system. It can count number of pulses in an accelerator cycle and store the counts in a momentary array. Using the module, customized read-back applications for various timing-related signals have been developed: (a) read-back a 25-Hz trigger clock, (b) read-back a pulsed bending magnet trig-ger, (c) read-back a magnet power-supply trigger. These applications were implemented successfully in J-PARC Main Ring, and demonstrated as countermeasure against past trigger-failure events. More details will be given in the paper.

Slides WEO22 [10.587 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-PCaPAC2022-WEO22

About •

Received ※ 02 October 2022 — Revised ※ 04 October 2022 — Accepted ※ 15 February 2023 — Issue date ※ 20 February 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)