Paper |
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THPV029 |
Development of Timing Read-Back System for Stable Operation of J-PARC |
927 |
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- M. Yang
Sokendai, Ibaraki, Japan
- N. Kamikubota
KEK, Ibaraki, Japan
- N. Kikuzawa
JAEA/J-PARC, Tokai-mura, Japan
- K.C. Sato
J-PARC, KEK & JAEA, Ibaraki-ken, Japan
- Y. Tajima
Kanto Information Service (KIS), Accelerator Group, Ibaraki, Japan
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Since 2006, the Japan Proton Accelerator Research Complex (J-PARC) timing system has been operated successfully. However, there were some unexpected trig-ger-failure events, typically missing trigger events, during the operation over 15 years. When a trigger-failure event occurred, it was often tough to find the one with the fault among many suspected modules. To solve the problem more easily, a unique device, triggered scaler, was devel-oped for reading back accelerator signals. The performance of the module has been evaluated in 2018. In 2021, we measured and observed an LLRF sig-nal as the first signal of the read-back system for beam operation. After firmware upgrades of the module, some customized timing read-back systems were developed, and successfully demonstrated as coping strategies for past trigger-failure events. In addition, a future plan to apply the read-back system to other facilities is discussed. More details are given in the paper.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THPV029
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About • |
Received ※ 20 October 2021 Accepted ※ 21 November 2021
Issue date ※ 13 January 2022 |
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