Turinworkshop 2 Leung
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Transcript of Turinworkshop 2 Leung
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Accelerator and Fusion Research Division Ion Beam Technology Program
Axial Type Neutron Generator
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Accelerator and Fusion Research Division Ion Beam Technology Program
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Accelerator and Fusion Research Division Ion Beam Technology Program
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Accelerator and Fusion Research Division Ion Beam Technology Program
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Accelerator and Fusion Research Division Ion Beam Technology Program
Axial D-D Neutron Generator
Ion source
Ti target
RF antenna
Pumping port
High voltage connection
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Accelerator and Fusion Research Division Ion Beam Technology Program
Lifetime of D-D Neutron Generator
• Source filling pressure = 3 mTorr
• Number of D2 molecules per cm3 1014
• Volume of generator = 2 × 103 cm3
• Total number of D2 molecules = 2 × 1017
• D - D neutron yield = 109 n/s
• Consumption rate of D2 molecules 2 × 109 /s
• Life time of generator = ( 2 × 1017 / 2 × 109 ) s
= 108 s
= 27,800 hrs
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Accelerator and Fusion Research Division Ion Beam Technology Program
Coaxial Type Neutron Generator
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Accelerator and Fusion Research Division Ion Beam Technology Program
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Accelerator and Fusion Research Division Ion Beam Technology Program
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Accelerator and Fusion Research Division Ion Beam Technology Program
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Accelerator and Fusion Research Division Ion Beam Technology Program
Applications:
- PGAA for material identification
- Boron Neutron Capture Therapy
(BNCT)
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Accelerator and Fusion Research Division Ion Beam Technology Program
PGAA and NAA Results
NAA spectrum for the analysis of NaCl measured using the neutron generator operating at a flux of 109 n/s corresponding to a fluency of 105 ncm-2s-1 at the target position
PGAA gamma-ray spectrum of the neutron generator, moderator, and support materials where the elements H, B, C, O, Al, Si, Cl, Fe, and Ti are identified.
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Accelerator and Fusion Research Division Ion Beam Technology Program
BNCT can be performed by means of:
- a fission reactor
- an accelerator system
(ESQ, linac, RFQ . . .)
- a compact neutron generator
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Accelerator and Fusion Research Division Ion Beam Technology Program
Principle of BNCT