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TY - CPAPER AU - Suwada, T. AU - Furukawa, K. AU - Miyahara, F. TI - Development of FPBA-Based TDC With Wide Dynamic Range for Monitoring the Trigger Timing Distribution System at the KEKB Injector Linac J2 - Proc. of International Beam Instrumentation Conference (IBIC2015), Melbourne, Australia, 13-17 September 2015 AB - A new field-programmable gate array (FPGA)-based time-to-digital converter (TDC) with a wide dynamic range greater than 20 ms has been developed to monitor the timing of various pulsed devices in the trigger timing distribution system of the KEKB injector linac. The pulsed devices are driven by feeding regular as well as any irregular (or event-based) timing pulses. For monitoring the timing as precisely as possible, a 16-ch FPGA-based TDC has been developed on a Xilinx Spartan-6 FPGA equipped on VME board with a time resolution of 1 ns. The resolution was achieved by applying a multisampling technique, and the accuracies were 2.6 ns (rms) and less than 1 ns (rms) within the dynamic ranges of 20 ms and 7.5 ms, respectively. The various nonlinear effects were improved by implementing a high-precision external clock with a built-in temperature-compensated crystal oscillator. PB - JACoW CY - Geneva, Switzerland SP - 70 EP - 74 KW - timing KW - FPGA KW - linac KW - injection KW - monitoring DA - 2016/01 PY - 2016 SN - 978-3-95450-176-2 DO - 10.18429/JACoW-IBIC2015-MOPB017 UR - http://accelconf.web.cern.ch/AccelConf/IBIC2015/papers/mopb017.pdf ER -