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Development of 48Ca Production System by Laser Isotope Separation (LIS) toward the study of neutrinoless double beta decay of CANDLES.

Research Project

Project/Area Number 23K13124
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics
Research InstitutionOsaka University

Principal Investigator

アナワット リッティロン  大阪大学, 核物理研究センター, 特任研究員 (60965763)

Project Period (FY) 2023-04-01 – 2025-03-31
Project Status Granted (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2024: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2023: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
KeywordsCANDLES / Calcium-48 / Isotope Separation / Isotope Enrichment / Laser Isotope Separation / Enrichment
Outline of Research at the Start

Neutrinoless double beta decay is a powerful method to understand the mysteries of the universe, especially the Majorana nature of neutrino. The key element is in 48Ca, but the production is challenging. This research aims to develop the cut-edge production method by laser isotope separation (LIS).

Outline of Annual Research Achievements

Calcium-48 (48Ca) is a key element used in neutrinoless double beta decay research by CANDLES. As it is costly and low abundance, we are exploring the possibility of using laser isotope separation for a mass production of 48Ca. The atomic beam production system, laser system, collection systems, and large-scale production chamber have been developed. We carried out a test with a single (80mW) blue-light laser diode and observed the shift of 40Ca and 44Ca. The displacement of 40Ca and 44Ca was 6.94 mm and 2.96 mm, respectively. However, due to the lower abundance 48Ca, we are now improving the overall performance to investigate the 48Ca separation. Multiple slave lasers that generate 2W power have achieved a production rate of 10g/year. The goal and strategy to achieve a production rate of 300 kg/year are considered.

Current Status of Research Progress
Current Status of Research Progress

3: Progress in research has been slightly delayed.

Reason

We are currently developing the laser isotope separation for 48Ca. The current status is the test of the production of the atomic beam system and the isotope separation by one of the six ports of the main chamber. The laser test was carried out, and 40Ca and 44Ca shifts were observed. However, due to the lower abundance of 48Ca, we are now improving the overall performance to investigate the isotope separation of 48Ca. The high-power, single-frequency laser is currently being developed, as is research into atomic beam production and recovery systems. All of the systems are required to achieve mass production of 48Ca.

Strategy for Future Research Activity

The plans to realize the laser isotope separation and mass production of 48Ca is to continue develop the study of the production of sheet-like atomic beam, development of collection system and the development of main chamber irradiation unit. We are now testing with single crucible, single laser, and collection system by the large main chamber. We aim to investigate the isotope separation of 48Ca with the above system. After that, we will set the high power of laser with a multiple nozzle to increase the atomic beam intensity and study the deflection of 48Ca. We aim to recovery the calcium from the collection surface and then measure the isotope ratio on each region by ICP-MS.

Report

(1 results)
  • 2023 Research-status Report
  • Research Products

    (11 results)

All 2024 2023

All Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (9 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] The status of $^{48}$Ca production by laser isotope separation for the study of neutrino-less double beta decay2023

    • Author(s)
      Rittirong Anawat、Umehara" "Saori、Matsuoka" "Kenji、Minami" "Yuto、Yoshida" "Sei、Ogawa" "Izumi、Hiraiwa" "Tasuku、Nakajima" "Junya、Yuhaku" "Ren、Tozawa" "Masashi、Tokita" "Shigeki、Niki" "Hideaki、Okuda" "Hironori、Uemukai" "Masahiro、Miyanaka" "Noriaki
    • Journal Title

      PoS ICRC2023

      Volume: 444 Pages: 1174-1174

    • DOI

      10.22323/1.444.1174

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Laser isotope separation to study for the neutrino-less double beta decay of <sup>48</sup>Ca2023

    • Author(s)
      Ogawa I、Hiraiwa T、Nakajima J、Yuhaku R、Tozawa M、Niki H、Tokita S、Miyanaga N、Uemukai M、Rittirong A、Umehara S、Matsuoka K、Yoshida S
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 2586 Issue: 1 Pages: 012136-012136

    • DOI

      10.1088/1742-6596/2586/1/012136

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] The status of laser isotope separation (LIS) of 48Ca for the study of neutrino-less double beta decay2024

    • Author(s)
      Rittirong Anawat
    • Organizer
      UGAP2024
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of Laser Isotope Separation (LIS) for 48Ca toward the Study of Neutrinoless Double Beta Decay by CANDLES2024

    • Author(s)
      Rittirong Anawat
    • Organizer
      第4回新学術「地下宇宙」若手研究会
    • Related Report
      2023 Research-status Report
  • [Presentation] The status of laser isotope separation (LIS) of 48Ca for the study of neutrino-less double beta decay2024

    • Author(s)
      Rittirong Anawat
    • Organizer
      第21回同位体科学会研究会
    • Related Report
      2023 Research-status Report
  • [Presentation] Current status of the laser isotope separation (LIS) of 48Ca for neutrinoless double beta decay2024

    • Author(s)
      Rittirong Anawat
    • Organizer
      JPS Spring meeting
    • Related Report
      2023 Research-status Report
  • [Presentation] Development of 48Ca Production System by Laser Isotope Separation (LIS) toward the Study of Neutrinoless Double Beta Decay of CANDLES.2023

    • Author(s)
      Rittirong Anawat
    • Organizer
      SPLG 2023
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] The Status of 48Ca Production by Laser Isotope Separation for the Study of Neutrinoless Double Beta Decay2023

    • Author(s)
      Rittirong Anawat
    • Organizer
      ICRC 2023
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] Status of 48Ca production by Laser Isotope Separation (LIS) toward the study of neutrinoless double beta decay2023

    • Author(s)
      Rittirong Anawat
    • Organizer
      2023 Fall Meeting of AESJ
    • Related Report
      2023 Research-status Report
  • [Presentation] Development of Laser Isotope Separation (LIS) for 48Ca toward the Study of Neutrinoless Double Beta Decay by CANDLES2023

    • Author(s)
      Rittirong Anawat
    • Organizer
      6th APS and JPS meeting (HAWAII2023)
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of Laser Isotope Separation (LIS) for 48Ca toward the Study of Neutrinoless Double Beta Decay by CANDLES2023

    • Author(s)
      Rittirong Anawat
    • Organizer
      DBD23
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research

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Published: 2023-04-13   Modified: 2024-12-25  

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