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 1WFB: Time-projection Chambers for Radioactive Isotope Beams II
11:00 AM–12:30 PM,
Tuesday, October 23, 2018
Hilton Room: King's 2
Chair: Daisuke Suzuki, RIKEN Nishina Center
Abstract ID: BAPS.2018.HAW.1WFB.2
Abstract: 1WFB.00002 : SπRIT-TPC experiment with neutron rich Sn + Sn collisions in RIKEN-RIBF*
11:30 AM–12:00 PM
Investigation of nuclear Equation of State (EoS) is one of the most attractive topics not only for nuclear physics but also astrophysics since the neutron star merger was discovered with the gravitational wave.
Nuclear EoS indicates large uncertainly in theory, because of lack of information above the normal nuclear density. Neutron rich heavy ion collisions are suitable to investigate isospin symmetry dependence of nuclear EoS at supra-saturation.
The first experiment using SAMURAI Pion-Reconstruction and Ion-Tracker-Time-Projection Chamber (SπRIT-TPC) was performed at RIKEN-RIBF-SAMURAI in 2016. The nuclear collisions with 132Sn and 108Sn beams at 270MeV/u on 124Sn and 112Sn targets were utilized for the systematic study. To trigger central collision events effectively, a multiplicity trigger, a large fragment beam veto and an active beam collimator systems were employed. And fast trigger worked to brock unnecessary electron through a gating-grid-driver. Tracking software has been developed based on FairROOT framework and analysis is on going.In this talk, the properties of SπRIT-TPC and the recent results of obtained by day-one experiment will be shown and discussed.
*This work is supported by the U.S. Department of Energy under Grant Nos. DE-SC0004835, DE- SC0014530, DE-NA0002923, US National Science Foundation Grant No. PHY-1565546, the Japanese MEXT KAKENHI (Grant-in-Aid for Scientific Re- search on Innovative Areas) grant No. 24105004, and the Polish National Science Center (NCN), under con- tract Nos. UMO- 2013/09/B/ST2/04064 and UMO- 2013/10/M/ST2/ 00624.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.HAW.1WFB.2
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