The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Enomoto, Y. AU - Furukawa, K. AU - Natsui, T. AU - Saotome, H.S. AU - Satoh, M. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - A New Pulse Magnet Control System in the KEK Electron Positron LINAC J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018 C1 - Vancouver, BC, Canada T2 - International Particle Accelerator Conference T3 - 9 LA - english AB - In 2017, sixty-four pules magnets were installed in the KEK e⁺/e⁻ LINAC for simultaneous injection to four different rings. Since each ring requires different injection energy, magnetic field in the LINAC has to be changed shot by shot (every 20 ms) according to the destination of the beam. To realize such operation, a PXI express based new control system was installed. Each unit, which consists of an event receiver board, a DAC board, and a ADC board, can set and monitor output current up to 8 pulsed power supply in 16 bit resolution. The timing and control system are integrated in that of the LINAC by using Micro-Research Finland's PXI event receiver board. In terms of software, Windows 8.1 and LabVIEW 2016 were mainly adopted to control the hardware. EPICS channel access (CA) protocol was used to communicate with operator's interface panels. In addition to real-time monitoring by EPICS CA and logging by CSS archiver every 10 s, data are logged every shot (every 20 ms) in the text file together with timestamp, shot ID and destination. At present, thirteen units are stably in operation to control 64 magnets. Further installation of the system is planned in 2018. PB - JACoW Publishing CP - Geneva, Switzerland SP - 2121 EP - 2123 KW - controls KW - power-supply KW - EPICS KW - timing KW - software DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-WEPAK014 UR - http://jacow.org/ipac2018/papers/wepak014.pdf ER -