Abstract
A new data acquisition system (DAQ system) has been developed at the Accurate Neutron-Nucleus Reaction Measurement Instrument (ANNRI) facility in the Japan Proton Accelerator Research Complex, Materials and Life Science Experimental Facility (J-PARC/MLF). DAQ systems for both the Ge detector system and the Li-glass detector system were tested by using a gold sample. The applicability of the time-of-flight method was checked. System performance was evaluated on the basis of digital conversion nonlinearity, energy resolution, multi-channel coincidence and dead time.
Highlights
In J-PARC [1], an increase of the beam power by more than a factor of 20 was achieved in 2015, to approximately 500 kW, up from the first beam shot in 2009 of 20 kW [2]
As the current DAQ system [4] for the Ge system was designed in 2009 for the lower beam power, the counting rate performance is almost saturated for the current beam power
In order to adapt to the current beam power, a new DAQ system has been developed
Summary
In J-PARC [1], an increase of the beam power by more than a factor of 20 was achieved in 2015, to approximately 500 kW, up from the first beam shot in 2009 of 20 kW [2]. This increase in beam power increases the rate at which users obtain experimental data. In order to adapt to the current beam power, a new DAQ system has been developed. A new DAQ system for the Li-glass detector must be developed, because the current DAQ system cannot be applied for the Li-glass detector signals as is
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