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6th International Workshop on Neutrino Factories July 27, 2004 K. Nagamine

ADVANCED MUON RADIOGRAPHY. 6th International Workshop on Neutrino Factories July 27, 2004 K. Nagamine Meson Science Laboratory, Institute of Materals Structure Science, KEK Physics Department, University of California, Riverside RIKEN, Honorary Scientist

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6th International Workshop on Neutrino Factories July 27, 2004 K. Nagamine

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  1. ADVANCED MUON RADIOGRAPHY 6th International Workshop on Neutrino Factories July 27, 2004 K. Nagamine Meson Science Laboratory, Institute of Materals Structure Science, KEK Physics Department, University of California, Riverside RIKEN, Honorary Scientist University of Tokyo, Professor Emeritus • Introduction; Muon Radiography • Possible Element Selective Muon Radiography • Possible Muon Sources for Advanced Muon Radiography • Accelerator System for Advanced Muon Radiography • Detection System for Advanced Muon Radiography • Conclusion;

  2. Recent Achievements with Cosmic-Ray Muon • After Alvarez Experiment • Transmission Method; Radiography of Volcano • (KEK-RIKEN) Mt. Asama and Mt. Iwate • b) Perturbation Method; Multiple-Scattering Radiography • (LANL) Use of Drift-Chamber Pair

  3. PRINCIPLE OF COSMIC-RAY MUON IMAGING ATTENUATION OF MUON INTENSITY THROUGH ROCK Unique Energy Spectrum for z Range-Energy Relation for Muon in Rock Unique Intensity of Penetrating Muon Through Rock

  4. PROBING INNER-STRUCTURE OF VOLCANO DATA-BASE FOR VOLCANIC ERUPTION

  5. POSSIBULE MUON SOURCES FOR ADVACED RADIOGRAPHY Monochromatic, Intense, Pecil Beam Like • Meson Decay Enhancement • Production at Primary-Beam Target • A) p+→m+ + nm (100 %) Surface m+ Beam at PSI, TRIUMF, KEK, RAL • 140 MeV/c2 4.1 MeV (30 MeV/c) • 26 ns • B) K+→　　　　　m+ + nm (63.4 %) • 444 MeV/c2153 MeV (236 MeV/c) K-Decay m+ at Multi GeV Accelerator, • 12 ns J-PARC-m 2. Muon Re-Acceleration from Zero-Energy Muon 3. Muons from n-Factories

  6. NEUTRINO FACTORIES FOR ADVANCED MUON RADIOGRAPHY Use of various energy muons available at the intermediate extraction from 2.5 GeV linac

  7. COMPACT & MOBILE ACCELERATOR FOR ADVANCED MUON RADIOGARAPHY Purpose TOWRDS LARGE APLICATION FIELDS Homeland Security, Medical Diagnostics, Large-Scale Industrial, Machinery Inspection, What is Mobile? Movable from one place to the other within a few days Mounted on a few trailers and movable in the high-way A few × 3 m wide × 20 m long Contribution to n-factory Same project at n-Factory, Muon Detection System, etc.

  8. COMPACT & MOBILE ACCELERATOR FOR p/m GENERATION To be mounted on 2.5 m wide 20 m long Trailer ►linear or circular? Linac Cyclotron, FFAG, Synchrotron, localization of radiation effects ► hadron on electron? P(n) + A → p± + B more efficient e + A → e+ + B + g less efficient g + C → D + p±compact circular machine ►Electron FFAG, 10 mA, 400 MeV

  9. EXAMPLE OF 400 MeV ELECTRON FFAG Basic parameters of electron FFAG for muon source Injector 30 MeV linac Main ring Energy 400 MeV Current 10 mA Magnetic field Spiral, 1.5 T・m, RF 100 MHz, 10 kV Pulse shape 20 Hz, 1 ms width Schematic layout of 400 MeV electron FFAG

  10. p/m COLLECTION AND MUON TRANSPORTATION

  11. EXAMPLE OF LARGE ACCEPTANCE PION/MUON CAPTURE Basic parameters of SC solenoid for muon capture Central field 3 T Solenoid coil Cold bore 30 cm Warm bore 20 cm Length 2 m Heat load below 1W Beam optics for muon capture solenoid

  12. TYPICAL EXAMPLE OF IN-FLIGHT COOLING

  13. PROPOSAL FOR NEW EFFICIENT MUONIUM IONIZATION Muonium ionization via resonant electron transfer to p+ in H plasma

  14. RF BUNCHING OF SLOW m+ BEAM Preparation for RF Acceleration 10 ns below 100 ps Example of RF bunching system for the fundamental RF frequency of 2,856 MHz of the succeeding linac

  15. ACCELERATOR FOR MUON ACCELERATION — 600 MeV MUON LINAC — Typical example of the muon radiography object and required muon energy Uranium hidden in Oil Rolley Oil, 3 m 600 MeV Bluest furnace Fe, 0.3 m 400 MeV Human body head Water, 0.3 m 60 MeV Schematic view of 600 MeV Muon linac by using X-band RF source Selection of RF Frequency S-band (2.856 GHz) X-band (11.2 GHz), etc. T.M. Wangler (LANL) LA-UR-04-3846 (2004)

  16. YIELD ESTIMATION FOR PROPOSED SYSTEM

  17. Proposed accelerator systems for the advanced muon radiography

  18. CONCLUSION New Application Fields of Advanced Element-Selective Muon Radiography — July, 2004 — • Important Applications • Homeland Security • Detection of Special Nuclear Material • hidden in Oil-filled Oil Tanker in 20 second • 2. Nuclear Reactor • Detecting Failures during full Operation • 3. Blast furnace • Inside Structure Inspection and Efficiency Increase • 4. Medical Diagnostics • Probing new Aspects of Brain Function Oil transporting tanker with a capacity of 26 kl (left) and a special nuclear material (right), potentially hidden inside the tanker. Schemetic view of structure and principle of blast furnace.

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