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Development of large acceptance multi-purpose spectrometer in Korea for symmetry energy

  • Byungsik Hong
  • Jung Keun Ahn
  • Gyeonghwan Bak
  • Jamin Jo
  • Minho Kim
  • Eun Joo Kim
  • Young Jin Kim
  • Young Jun Kim
  • Minjung Kweon
  • Hanseul Lee
  • Hyo Sang Lee
  • Jong-Won Lee
  • Jung Woo Lee
  • Kyong Sei Lee
  • Byul Moon
  • Dong Ho Moon
  • Benard Mulilo
  • Jaebeom Park
  • Min Sang Ryu
  • Hyunha Shim
  • LAMPS Collaboration
Article

Abstract

The Rare Isotope Accelerator complex for ON-line experiments (RAON) is a new radioactive ion beam accelerator facility under construction in Korea. The large acceptance multi-purpose spectrometer (LAMPS) is one of the experimental devices for nuclear physics at RAON. It focuses on the nuclear symmetry energy at supra-saturation densities. The LAMPS Collaboration has developed and constructed various detector elements, including a time projection chamber (TPC) and a forward neutron detector array. From the positron beam test, the drift velocity of the secondary electrons in the TPC is \(5.3 \pm 0.2\) cm/\(\upmu \)s with P10 gas mixture, and the position resolution for pads with dimensions of 4 \(\times \) 15 mm\(^{2}\) is in the range of \(\sim \) 0.6–0.8 mm, depending on the beam position. From the neutron beam test, the energy resolution of the prototype neutron detector module is determined to be 3.4%, and the position resolution is estimated to be better than 5.28 cm. At present, the construction of the LAMPS neutron detector system is in progress.

Keywords

RAON LAMPS Radioactive ion beam Heavy-ion collision TPC Neutron detector Nuclear symmetry energy RCNP ELPH 

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Copyright information

© Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Chinese Nuclear Society, Science Press China and Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Byungsik Hong
    • 1
  • Jung Keun Ahn
    • 1
  • Gyeonghwan Bak
    • 2
  • Jamin Jo
    • 1
  • Minho Kim
    • 1
  • Eun Joo Kim
    • 3
  • Young Jin Kim
    • 4
  • Young Jun Kim
    • 1
  • Minjung Kweon
    • 5
  • Hanseul Lee
    • 2
  • Hyo Sang Lee
    • 4
  • Jong-Won Lee
    • 1
  • Jung Woo Lee
    • 1
  • Kyong Sei Lee
    • 1
  • Byul Moon
    • 1
  • Dong Ho Moon
    • 2
  • Benard Mulilo
    • 1
  • Jaebeom Park
    • 1
  • Min Sang Ryu
    • 4
  • Hyunha Shim
    • 1
  • LAMPS Collaboration
  1. 1.Department of PhysicsKorea UniversitySeoulRepublic of Korea
  2. 2.Department of PhysicsChonnam National UniversityGwangjuRepublic of Korea
  3. 3.Division of Science EducationChonbuk National UniversityJeonjuRepublic of Korea
  4. 4.Rare Isotope Science ProjectInstitute for Basic ScienceDaejeonRepublic of Korea
  5. 5.Department of PhysicsInha UniversityIncheonRepublic of Korea

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