Neutron rate estimates in MAST based on gyro-orbit modelling of fast ions

Neutron rate estimates in MAST based on gyro-orbit modelling of fast ions

Neutron rate estimates in MAST based on gyro-orbit modelling of fast ions 150 150 amit
UKAEA-CCFE-PR(20)117

Neutron rate estimates in MAST based on gyro-orbit modelling of fast ions

A discrepancy between predicted and measured neutron rates on MAST using TRANSP/NUBEAM was observed. Further causes of this discrepancy are here studied by means of TRANSP/NUBEAM and ASCOT/BBNBI simulations. Gyro-Orbit simulations resulted in an approximately 20 % reduction of the fast ion density compare to the Guiding Center with TRANSP/NUBEAM and ASCOT/BBNBI. DRESS was used to calculate the neutron rate at the Neutron
Camera detector’s location showing how the discrepancy is considerably reduced, with now the correction factor, used to match experimental and predicted neutron rates, being around 0.9.

Collection:
Journals
Journal:
Nuclear Fusion
Publisher:
IOP (Institute of Physics)
Published date:
12/10/2020