turinworkshop 2 leung
DESCRIPTION
international workshop accelerator based neutron sources for medical industrial and scientific applications torino eurosea international workshop accelerator based neutron sources for medical industrial and scientific applications torino euroseaTRANSCRIPT
Accelerator and Fusion Research Division Ion Beam Technology Program
Axial Type Neutron Generator
Accelerator and Fusion Research Division Ion Beam Technology Program
Accelerator and Fusion Research Division Ion Beam Technology Program
Accelerator and Fusion Research Division Ion Beam Technology Program
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
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
Accelerator and Fusion Research Division Ion Beam Technology Program
Coaxial Type Neutron Generator
Accelerator and Fusion Research Division Ion Beam Technology Program
Accelerator and Fusion Research Division Ion Beam Technology Program
Accelerator and Fusion Research Division Ion Beam Technology Program
Accelerator and Fusion Research Division Ion Beam Technology Program
Applications:
- PGAA for material identification
- Boron Neutron Capture Therapy
(BNCT)
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.
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
Accelerator and Fusion Research Division Ion Beam Technology Program
Principle of BNCT