JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - CONF AU - Satou, K. AU - Toyama, T. AU - Yamada, S. ED - Schaa, Volker R.W. ED - Batten, Tonia ED - Bree, Michael ED - Petit-Jean-Genaz, Christine ED - Hunter, Darren TI - The Conceptual Design Study for New BPM Signal Processing System of J-PARC (MR) J2 - Proc. of IBIC2023, Saskatoon, Canada, 10-14 September 2023 CY - Saskatoon, Canada T2 - International Beam Instrumentation Conference T3 - 12 LA - english AB - The BPM signal processing system, which is19 years old system, have been suffering from gain fluctuation due to contact resistance of the mechanical gain selector, communication disruption caused by an unstable contact of a card edge connector. In addition, it has a difficulty of repairments because some on-board parts have already reached end of product-life cycle, and some units have been in unusable situation. Presently, we are on the beam power upgrade campaign to 1.3 MW by increasing beam bunch current and shortening the MR operation cycle, and precise beam tunings would require massive waveform data processing and transfer to a storage than the present system. For this, we have been developing the system based on the 10 GbE optical link. The ADC board which is under development would perform direct sampling using the third harmonic of RF. The digital IQ demodulation technique is used to extract the baseband oscillation from the raw data. The obtained raw waveform as well as closed orbit data would be stored in the data storage system. In the presentation, we will report on the progress of development aimed at operation in 2025 and the conceptual design of the new system. PB - JACoW Publishing CP - Geneva, Switzerland SP - 78 EP - 81 KW - impedance KW - operation KW - controls KW - network KW - FPGA DA - 2023/12 PY - 2023 SN - 2673-5350 SN - 978-3-95450-236-3 DO - doi:10.18429/JACoW-IBIC2023-MOP023 UR - https://jacow.org/ibic2023/papers/mop023.pdf ER -