Speaker
Description
In experiments using the ultra-high-resolution magnetic spectrometer Grand Raiden at the Research Center for Nuclear Physics (RCNP), the University of Osaka, several projects are currently underway to integrate digitizers for waveform acquisition from silicon detectors. Scattered particles are detected by the focal-plane detectors of Grand Raiden to determine the excitation energy, and decay particles from excited nuclei are measured by silicon detectors, and those signal waveforms are acquired using digitizers.
Therefore, it is necessary to develop a method for coincidence measurements of scattered particles and decay particles using both the focal-plane detectors and silicon detectors in experiments with Grand Raiden at RCNP.
Establishing this measurement technique will expand the experimental scope of Grand Raiden at RCNP and provide an essential experimental foundation.
The data acquisition (DAQ) system has recently undergone a significant transition. While the system for the focal-plane detectors has been upgraded to a triggerless streaming DAQ to ensure dead-time-free data collection, waveform acquisition for the silicon detectors still relies on a conventional trigger-based DAQ.
To synchronize these two distinct architectures, an analog trigger is generated from the focal-plane detector signals and fed into the silicon detector DAQ. In addition, the "accepted" signals from the silicon DAQ are fed back into the streaming DAQ to serve as reference signals.
The system matches the precise timing information of these reference signals and integrates the data from both systems to reconstruct individual physical events.
This poster presents the development of this hybrid integration method and provides an evaluation of its performance.
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