Author: Yang, M.
Paper Title Page
THPV029 Development of Timing Read-Back System for Stable Operation of J-PARC 927
  • 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
  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.  
DOI • reference for this paper ※  
About • Received ※ 20 October 2021       Accepted ※ 21 November 2021       Issue date ※ 13 January 2022  
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)