Monte Carlo generated neutron spectra for simulation of inertial fusion diagnostics
Event details
| Date | 20.02.2015 |
| Hour | 10:30 › 11:30 |
| Speaker |
Gianmarco Rossi (Università degli Studi di Roma "La Sapienza", Italy) |
| Location |
PPB 019
|
| Category | Conferences - Seminars |
In this research activity, we have studied the neutron energy spectrum produced by a fusion plasma through a Monte Carlo code in order to improve the understanding of the "neutron averaged" ion temperature measured from experimental data analysis, in the frame of a research line pursued in collaboration with M.I.T. Plasma Fusion Center and the University of Rochester Laboratory for Laser Energetics.
The Monte Carlo program takes into account Doppler broadening due to both nuclei thermal motion and bulk fluid motion, so we can simulate the production neutron energy spectrum for a plasma both at rest and with fluid velocity. We have enhanced the comprehension of the effects of the bulk velocity on the neutron spectrum width providing an improvement of existing formula. Our results shows that the neutron spectrum broadening due to fluid motion is important (10-30%) and should be properly taken into account in the experimental data analysis.
The Monte Carlo program takes into account Doppler broadening due to both nuclei thermal motion and bulk fluid motion, so we can simulate the production neutron energy spectrum for a plasma both at rest and with fluid velocity. We have enhanced the comprehension of the effects of the bulk velocity on the neutron spectrum width providing an improvement of existing formula. Our results shows that the neutron spectrum broadening due to fluid motion is important (10-30%) and should be properly taken into account in the experimental data analysis.
Practical information
- Informed public
- Free
Organizer
- P. Ricci
Contact
- P. Ricci