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May 18 – 20, 2015
National Superconducting Cyclotron Laboratory
US/Michigan timezone
Registration deadline Sunday, 9 May!

The SπRIT-TPC data acquisition system and analysis framework

May 19, 2015, 3:15 PM
25m
Lecture Hall (National Superconducting Cyclotron Laboratory)

Lecture Hall

National Superconducting Cyclotron Laboratory

640 South Shaw Lane East Lansing, MI 48824
Oral Presentation Techinical issues Session 7

Speaker

Yassid Ayyad (Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka, 567-0047, Japan and NSCL, Michigan State University, East Lansing, Michigan, 48824, USA)

Description

The SAMURAI-SπRIT project will aim to constrain the symmetry-energy term of the nuclear Equation of State (EoS) at supra-saturation densities [1]. For such purpose, a Time Projection Chamber (TPC) was recently constructed in order to measure π−/π+ and t/3He yield ratios in central collisions of neutron-rich heavy ions. The TPC will be installed inside the SAMURAI superconducting dipole magnet (at RIKEN, Japan) to benefit from its large magnetic rigidity. To deal with the large particle multiplicities, the pad plane is highly segmented in 12,096 pads of 12x8 mm2 of area. Signals are digitized and read out by the General Electronics for TPC system [2,3], with a maximum of 512 time buckets at 1 to 100 MHz of sampling rate. In order to process the large amount of data expected (Hundreds of MB/s) and to combine the data from auxiliary detectors, the NARVAL data acquisition system was adopted. Moreover, an advanced analysis framework is also being developed by our collaboration to reconstruct the relevant observables by using sophisticated tracking algorithms, and transport codes to simulate the underlying physics. In this contribution we report the performance and present status of the SπRIT-TPC data acquisition system and the dedicated analysis framework, called SπRITROOT. This material is based on work supported by the DOE under Grant No. DE-SC0004835, Japanese MEXT Grant-in-Aid for Scientific Research on Innovative Area Grant No. 24105004 and the National Research Foundation of Korea under grant No. 2012M7A1A2055596. [1] R. Shane et al., Nucl. Instrum. and Meth. A (accepted for publication). [2] T. Isobe et al., RIKEN Accel. Prog. Rep. 46, 151 (2014). [3] E. Pollaco et al., Physics Procedia 37, 1799 (2012).

Primary author

Genie Jhang (Department of Physics, Korea University, Seoul 136-701, Republic of Korea)

Co-authors

Byungsik Hong (Department of Physics, Korea University, Seoul 136-701, Republic of Korea) Jung Woo Lee (Department of Physics, Korea University, Seoul 136-701, Republic of Korea) ManYee Betty Tsang (NSCL, Michigan State University, East Lansing, Michigan, 48824, USA) Prabhakar Palni (NSCL, Michigan State University, East Lansing, Michigan, 48824, USA) SπRIT collaboration SπRIT collaboration (SπRIT collaboration) TadaAki Isobe (RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan) Tetsuya Murakami (Department of Physics, Kyoto University, Kita-shirakawa, Kyoto 606-8502, Japan) William Lynch (NSCL, Michigan State University, East Lansing, Michigan, 48824, USA) Yassid Ayyad (Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka, 567-0047, Japan and NSCL, Michigan State University, East Lansing, Michigan, 48824, USA)

Presentation materials

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