The Data Acquisition System Based on PMC Bus
/ Authors
Y.Igarashi, H.Fujii, T.Higuchi, M.Ikeno, E.Inoue, R.Itoh, H.Kodama, T.Murakami, Y.Nagasaka, M.Nakao
and 14 more authors
K.Nakayoshi, M.Saitoh, S.Shimazaki, S.Y.Suzuki, M.Tanaka, K.Tauchi, G.Varner, M.Yamauchi, Y.Yasu, T.Katayama, K.Watanabe, M.Ishizuka, S.Onozawa, C.J.Li
/ Abstract
High energy physics experiments in KEK/Japan rush into over kHz trigger stage. Thus, we need a successor of the data acquisition(DAQ) system that replaces the CAMAC or FASTBUS systems. To meet these needs, we have developed a widely usable high-density DAQ system which includes a crate, base-board, daughter cards for front-end A/D or T/D conversion, and back-end communication base-board for data transfer and timing control. The size of the crate is for the 9U Euro-cards with the standard VME32 bus and extension connectors for power supply. The base-board comprises of a local bus with the sequencer connected to the front-end daughter cards via event buffering FIFOs, and the standard PMC (PCI mezzanine card) bus to be set a PMC processor unit to reduce data size from the front-end daughter cards. A data transfer module, which is connected to the event building system, and a trigger control unit, which communicates with the central timing controller are installed on the back-end communication card connected to the rear end of the base-board. We describe the design of this DAQ system and evaluate the performance of it.