HYP HRS-HKS

Hypernuclear Project with HRS-HKS

Experiments

Approved

• E12-15-008 (^{40, 48}_ΛK)
• E12-20-013 (²⁰⁸_ΛTl)

Conditionally Approved

• C12-19-002 (^{3, 4}_ΛH)
• C12-20-003 (³_Λn)

Overview

The experiment is planned to be done with high resolution spectrometers HRS and HKS in JLab Hall A for high precision hypernuclear measurement. Electron beams at 4.24 GeV will be impinged on various targets (^{3, 4}H, ^{40, 48}Ca, ²⁰⁸Pb), and scattered electrons and K⁺s from the (e,e'K⁺) reaction will be detected by the spectrometers for missing mass spectroscopy.

Documents

DAQ

• FPGA

Theses

• JFY2020
  • Katayama_Thesis2020.pdf:
    K. Katayama, "Development of HRS-HKS trigger system with FPGA -High precision measurement of hypernuclei at JLab-",
    Master's Thesis, Kyoto University, Mar 2021 (in Japanese).
  • Toyoda_Thesis2020.pdf:
    T. Toyoda, "Basic design of gas target for high accuracy mass measurement of hypertriton at JLab",
    Master's Thesis, Kyoto University, Mar 2021 (in Japanese).
  • T. Akiyama, "",
    Master's Thesis, Tohoku University, Mar 2021 (in Japanese).
  • K. Okuyama, "",
    Master's Thesis, Tohoku University, Mar 2021 (in Japanese).

Meetings

• Weekly Meeting etc.
• Strategy Meeting
• Collaboration Meeting

Publications

• T. Gogami et al., "Accurate Λ hypernuclear spectroscopy with electromagnetic probe at Jefferson Lab", AIP Conference Proceedings 2319, 080019 (2021) [1]

Presentations

2021

JPS Annual Meeting

• Information
  • 12-15 March 2021
  • Online
• Presentations
  • K.N. Suzuki
  • K. Okuyama
  • T. Akiyama
  • K. Katayama
  • Y.R. Nakamura

APFB2020

• Informatoin
  • The 8th Asia-Pacific Conference on Few-Body Problems in Physics (APFB2020) [2]
  • 1-5 March 2021
  • Kanazawa, JAPAN
• Presentations
  • K. Katayama, "Trigger system development for the accurate B_Λ measurement of Lambda hypertriton at JLab"
  • K. Itabashi, "Study of the nnΛ state and Λn interaction at Jefferson Lab"
  • T. Gogami, "Lambda hypertriton binding energy measurement at Jefferson Lab" (PDF)

Hall A winter Collaboration Meeting

• B. Pandey "", Jan 21, 2021, Online
• T. Gogami, "Future hypernuclear experiments with HKS", Jan 22, 2021, Online (PDF)