Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Data acquisition system in Run-0a for the J-PARC E16 experiment   J-PARC E16 is an experiment to examine the origin of hadron mass through a
systematic measurement of spectral changes of vector mesons in nuclei. The
measurement of $e^{+}e^{-}$ pairs from the decay of vector mesons will provide
the information of the partial restoration of the chiral symmetry in a normal
nuclear density. To resolve a pulse pile-up and achieve good discrimination of
$e^{\pm}$ from the background of a reaction rate of an order of 10 MHz, the
data acquisition (DAQ) system uses waveform sampling chips of APV25 and DRS4.
The trigger rate and data rate are expected to be 1 kHz and 130--330 MiB/s,
respectively. The DAQ system for readout of APV25 and DRS4 were developed,
where events were synchronized by common trigger and tag data. The first
commissioning in beam, called Run-0a, was performed in June 2020 with about 1/4
of the designed setup. The DAQ worked with a trigger rate of 300 Hz in the
Run-0a and the main bottleneck was a large data size of APV25. Further
optimization of the DAQ system will improve the performance.

18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph