Bulletin of the American Physical Society
5th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Volume 63, Number 12
Tuesday–Saturday, October 23–27, 2018; Waikoloa, Hawaii
Session DE: Mini-symposium on Strangeness Nuclear Physics Today and Tomorrow II
9:00 AM–11:30 AM,
Thursday, October 25, 2018
Hilton Room: King's 1
Chair: Hirokazu Tamura, Tohoku University
Abstract ID: BAPS.2018.HAW.DE.5
Abstract: DE.00005 : DAQ upgrade for the use of the high intensity π beam in the Σp scattering experiment (J-PARC E40)*
10:00 AM–10:15 AM
The short range repulsion of the baryon-baryon interaction is phenomenally known but its origin is not conclusive. One possible source is the Pauli blocking in the quark level and the quite strong repulsion in the Σ+p (S=1, I=3/2) channel is expected. Thus, we planed to perform a high statistics Σp scattering experiment to investigate the origin of the repulsive core through the Σ+p scattering and to reveal the nature of the ΣN interaction through the Σ- p scatterings.
In order to perform this experiment within the reasonable beam time, the use of the high intensity π beam up to 10 MHz is the key. However, as the increase of the beam intensity makes the trigger rate high, the significant data loss is expected with the present DAQ system. Thus, we upgraded our DAQ system. One upgraded point is to shorten the hardware busy time by replacing several electronics and by improving the readout method. The next one is to introduce the specified trigger system to reduce the trigger rate.
*Young Scientist (A) (Grant No. JP23684011, JP15H05442) Scientific Research (A) (Grant No. JP18H03693) Scientific Research on Innovative Areas (Grant No. JP24105003, JP15H00838)
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.HAW.DE.5
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