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2004 Fiscal Year Final Research Report Summary

Development of pulsed conducting target for high intensity and high luminosity muon beam

Research Project

Project/Area Number 14204028
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field 素粒子・核・宇宙線
Research InstitutionHigh Energy Accelerator Research Organization (2004)
The High Energy Accelerator Research Organization (2002-2003)

Principal Investigator

YOSHIMURA Koji  High Energy Accelerator Research Organization, Institute of Particle and Nuclear Studies, Aso Prof (50272464)

Co-Investigator(Kenkyū-buntansha) KOBAYASHI Takashi  High Energy Accelerator Research Organization, Institute of Particle and Nuclear Studies, Aso. Prof (70291317)
IGARASHI Yoichi  High Energy Accelerator Research Organization, Institute of Particle and Nuclear Studies, Asi Prof (50311121)
NISHIKAWA Koichiro  High Energy Accelerator Research Organization, Institute of Particle and Nuclear Studies, Prof (32929037)
IWASHITA Yoshihisa  Kyoto University, Institute for Chemical Research, Aso. Prof (00144387)
Project Period (FY) 2002 – 2004
KeywordsHigh Intensity Muon Source / Pulsed Conducting Target / Mercury Target / Low Emittance Beam / High Power Proton Accelerator / Neutrino Factory / Lepto flavor violation / Target Material
Research Abstract

We have studied "conducting pulsed target" for high intensity muon source. By applying large pulsed current, secondary-produced pions would be confined inside the target because of large toroid field. In the end, pions would come out from the end of the target. This scheme would provide much brighter secondary beam with smaller emittance.
To realize this new scheme, we have investigated various fields as follows:
1. We have determined the basic parameters for the PRISM, a low energy muon source. We first studied mercury target and have developed several equipments: mercury loop, pulsed power supply, and pulse transformer.
2. Radiation heating caused by beam-target interaction is one of the key parameters in design of the target. We developed a new technique, so called "cryogenic calorimeter" to measure beam heating precisely and to calibrate Monte Carlo simulation code.
3. It is very important to select the target material which could survive under high pulsed current and high intense beam. We have measured mechanical properties for several candidate materials and carefully watch their change when they are irradiated.
4. It is very difficult to measure emittance of the beam with large dispersion such as secondary beam. We have developed a new measurement method of beam emittance by measuring track and momentum for each secondary particle.
We have studied and obtained lots of essential knowledge to realize the "conducting pulsed target" although we could not carried out proof-of-principle experiments due to the limited time and unavailability of the test beam. We will to continue to work on developing the target technology, on the basis of these accomplishments.

  • Research Products

    (18 results)

All 2006 2005 2004

All Journal Article (18 results)

  • [Journal Article] Material irradiation damage studies for high poweraccelerators.2006

    • Author(s)
      N. Simos, et al.
    • Journal Title

      Proceedings of EPAC 2006 1

      Pages: 1816-1818

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Solid target studies for muon colliders and neutrino beams.2006

    • Author(s)
      N. Simos, et al.
    • Journal Title

      Nucl. Phys. Proc. Suppl. 155

      Pages: 288-290

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Material irradiation damage studies for high power accelerators.2006

    • Author(s)
      N. Simos, H. G. Kirk, H. Ludewig, L. F. Mausner, J. G. O′Conor, S. Makimura, K. Yoshimura, K. T. McDonald, L. P. Trung
    • Journal Title

      Proceedings of EPAC 2006 1

      Pages: 1816-1818

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Solid target studies for muon colliders and neutrino beams2006

    • Author(s)
      N. Simos, H. Kirk, H. Ludewig, P. Thieberger, W. T. Weng, P. T. Trung, K. McDonald, J. Sheppard, K. Yoshimura, Y. Hayato
    • Journal Title

      Nucl. Phys. Proc. Suppl. 155

      Pages: 288-290

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Conducting pulsed target2005

    • Author(s)
      K. Yoshimura, et al.
    • Journal Title

      Nucl. Phys. Proc. Suppl. 149

      Pages: 265-267

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] R&D works on high-power targetry for neutrino factories2005

    • Author(s)
      K. Yoshimura
    • Journal Title

      Journal of Nuclear Materials 343

      Pages: 14-20

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Measurement of radiation heating induced by secondaryparticles from 12-GeV primary proton beam interactions.2005

    • Author(s)
      H. Ohnishi, et al.
    • Journal Title

      Nucl. Instrum. Meth. A545

      Pages: 88-96

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] A High-Power Target Experiment2005

    • Author(s)
      H. G. Kirk, et al.
    • Journal Title

      Proceedings of Particle Accelerator Conference(PAC05) 3

      Pages: 2433-2435

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Post-irradiation properties of candidate materials forhigh-power targets.2005

    • Author(s)
      H. G. Kirk, et al.
    • Journal Title

      Proceedings of Particle Accelerator Conference(PAC05) 2

      Pages: 1329-1331

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Target material irradiation studies for high-intensityaccelerator beams.2005

    • Author(s)
      N. Simos, et al.
    • Journal Title

      Nucl. Phys. Proc. Suppl. 149

      Pages: 259-261

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Conductine pulsed target.2005

    • Author(s)
      K. Yoshimura, Y. Yamanoi, P. Sievers, B. Autin
    • Journal Title

      Nucl. Phys. Proc. Suppl., 149

      Pages: 265-267

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] R\&D works on high-power targetry for neutrino factories2005

    • Author(s)
      Koji YOSHIMURA
    • Journal Title

      Journal of Nuclear Materials 343

      Pages: 14-20

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Measurement of radiation heating induced by secondary particles from 12-GeV primary proton beam interactions.2005

    • Author(s)
      H. Ohnishi, et al.
    • Journal Title

      Nucl. Instrum. Meth. A545

      Pages: 88-96

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] A High-Power Target Experiment2005

    • Author(s)
      H. G Kirk, et al.
    • Journal Title

      Proceedings of Particle Accelerator Conference (PAC05) 3

      Pages: 2433-2435

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Post-irradiation properties of candidate materials for high-power targets.2005

    • Author(s)
      H. G. Kirk, H. Ludewig, L. F. Mausner, N. Simos, P. Thieberger, Y. Hayato, K. Yoshimura, K. T. McDonald, J. Sheppard, L. P. Trung
    • Journal Title

      Proceedings of Particle Accelerator Conference (PAC05) 2

      Pages: 1329-1331

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Target material irradiation studies for high-intensity accelerator beams.2005

    • Author(s)
      N. Simos, H. Kirk, H. Ludewig, P. Thieberger, W. T. Weng (Brookhaven), K. McDonald (Princeton U.), J. Sheppard (SLAC), G. Evangelakis (Ioannina U.), K. Yoshimura (KEK, Tsukuba)
    • Journal Title

      Nucl. Phys. Proc. Suppl., 149

      Pages: 265-267

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Targetry R\&D for PRISM project.2004

    • Author(s)
      K. Yoshimura, et al
    • Journal Title

      Aip Conf. Proc. 721

      Pages: 325-328

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Targetry R\&D for PRISM project.2004

    • Author(s)
      K. Yoshimura, et al.
    • Journal Title

      AIP Conf. Proc. 721

      Pages: 325-328

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2010-06-09  

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