$\mu$TCA DAQ system and parallel reading in CANDLES experiment
Abstract
A new TCA DAQ system was introduced in CANDLES experiment with SpaceWire-to-GigabitEthernet (SpaceWire-GigabitEthernet) network for data readout and Flash Analog-to-Digital Converters (FADCs). With SpaceWire-GigabitEthernet, we can construct a flexible DAQ network with multi-path access to FADCs by using off-the-shelf computers. FADCs are equipped 8 event buffers, which act as de-randomizer to detect sequential decays from the background. SpaceWire-GigabitEthernet has high latency (about 100 sec) due to long turnaround time, while GigabitEthernet has high throughput. To reduce dead-time, we developed the DAQ system with 4 "crate-parallel" (modules in crates are read in parallel) reading threads. As a result, the readout time is reduced by 4 times: 40 msec down to 10 msec. With improved performance, it is expected to achieve higher background suppression for CANDLES experiment. Moreover, for energy calibration, "event-parallel" reading process (events are read in parallel) is also introduced to reduce measurement time. With 2 "event-parallel" reading processes, the data rate is increased 2 times.
Keywords
Cite
@article{arxiv.1806.10668,
title = {$\mu$TCA DAQ system and parallel reading in CANDLES experiment},
author = {B. T. Khai and S. Ajimura and K. Kanagawa and T. Maeda and M. Nomachi and Y. Sugaya and K. Suzuki and M. Tsuzuki},
journal= {arXiv preprint arXiv:1806.10668},
year = {2019}
}
Comments
21st Real Time Conference (2018), Williamsburg, Virginia, USA. 8 pages, 13 figures, 3 tables, 22 references