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<p>A muon beam line, called as RAMIS (RAON Muon Irradiation System), was constructed as a part of the Rare isotope Accelerator complex for ON-line experiment (RAON) facility at the Institute for Rare Isotope Science (IRIS) in Korea.&#xa0;The muon beam line will be utilized to provide an almost 100% spin-polarized surface muon beam as a magnetic probe for various experimental studies for structure and dynamics of matter.&#xa0;The integration test was performed for the purpose of evaluation of the muon beam transport system and the nominal performance of the spin rotator.&#xa0;<InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="40042_2024_1265_Article_IEq3.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="15" /> </InlineMediaObject> <EquationSource Format="TEX">\(\beta\)</EquationSource> <EquationSource Format="MATHML"><math> <mi>β</mi> </math></EquationSource> </InlineEquation>-particle transport test was performed using <InlineEquation ID="IEq4"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="40042_2024_1265_Article_IEq4.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="19" /> </InlineMediaObject> <EquationSource Format="TEX">\(^{106}\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mn>106</mn> </mmultiscripts> </math></EquationSource> </InlineEquation>Ru/Rh radioactive source, and its transport to the sample irradiation position of F2 was verified by beam profile measurement.&#xa0;The conditioning test of the spin rotator suggested its nominal performance, particularly operation voltages of ± 120 kV to two electrodes.&#xa0;We report on the current status of the muon beam line, including muon production system, proton beam dump, muon beam transport line, and spin rotator.&#xa0;The test result of the <InlineEquation ID="IEq5"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="40042_2024_1265_Article_IEq3.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="15" /> </InlineMediaObject> <EquationSource Format="TEX">\(\beta\)</EquationSource> <EquationSource Format="MATHML"><math> <mi>β</mi> </math></EquationSource> </InlineEquation>-particle transport and the spin rotator conditioning are also presented.</p>

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Current status of RAON muon irradiation system (RAMIS) for \(\mu\)SR spectrometer at RAON

  • 期刊论文

  • 发表日期：

    2025年2月20日

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  • Dong Geon Kim,
  • Kyoungho Tshoo,
  • Seong Jae Pyeun,
  • Minsik Kwag,
  • Cheolmin Ham,
  • Cheong Soo Lee,
  • Hyo Sang Lee,
  • Donghyun Kwak,
  • Kwang-Bok Lee,
  • Mijung Kim,
  • Charles Akers,
  • Sangjin Lee,
  • Jae Cheon Kim,
  • Taeksu Shin,
  • Jae Chang Kim,
  • Jae Young Jeong,
  • Yong Kyun Kim,
  • Junesic Park,
  • Ju Hahn Lee,
  • Kihong Pak,
  • Yong Hyun Kim

摘要

A muon beam line, called as RAMIS (RAON Muon Irradiation System), was constructed as a part of the Rare isotope Accelerator complex for ON-line experiment (RAON) facility at the Institute for Rare Isotope Science (IRIS) in Korea. The muon beam line will be utilized to provide an almost 100% spin-polarized surface muon beam as a magnetic probe for various experimental studies for structure and dynamics of matter. The integration test was performed for the purpose of evaluation of the muon beam transport system and the nominal performance of the spin rotator.  \(\beta\) β -particle transport test was performed using \(^{106}\) 106 Ru/Rh radioactive source, and its transport to the sample irradiation position of F2 was verified by beam profile measurement. The conditioning test of the spin rotator suggested its nominal performance, particularly operation voltages of ± 120 kV to two electrodes. We report on the current status of the muon beam line, including muon production system, proton beam dump, muon beam transport line, and spin rotator. The test result of the \(\beta\) β -particle transport and the spin rotator conditioning are also presented.