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