Experimental study of basic gyrotron physics from linear to chaotic regimes
Event details
| Date | 11.06.2012 |
| Hour | 10:30 › 11:30 |
| Speaker | MER S. Alberti, CRPP - EPFL |
| Location |
PPB.019
|
| Category | Conferences - Seminars |
The CW-gyrotron developped at CRPP for a 400MHz DNP-NMR* spectroscopy application has demonstrated to be an ideal experimental set-up for studying basic wave-particle interaction dynamics in the domain of coherent radiation by intense electron beams.
In this seminar we present a detailed experimental study of the operational capabilities of a first-prototype modular gyrotron, where 0.26THz radiation in excess of 200W-CW has been measured in the designed TE7,2 mode.
It will be shown that all the operational domains starting from linear theory up to chaotic regimes can be experimentally investigated. The accessibility to non-stationary operating points characterized by the excitation of side-bands allows to explore novel operational regimes such as pulsed modes obtained in the so called Q-switching regimes.
The basics elements of the gyrotron theory will be presented and the experimental results will be discussed on the basis of the theoretical prediction obtained with the non-linear time-dependent self-consistent monomode code, TWANG, developped at CRPP.
* DNP-NMR: Dynamic Nuclear Polarization - Nuclear Magnetic Resonance
In this seminar we present a detailed experimental study of the operational capabilities of a first-prototype modular gyrotron, where 0.26THz radiation in excess of 200W-CW has been measured in the designed TE7,2 mode.
It will be shown that all the operational domains starting from linear theory up to chaotic regimes can be experimentally investigated. The accessibility to non-stationary operating points characterized by the excitation of side-bands allows to explore novel operational regimes such as pulsed modes obtained in the so called Q-switching regimes.
The basics elements of the gyrotron theory will be presented and the experimental results will be discussed on the basis of the theoretical prediction obtained with the non-linear time-dependent self-consistent monomode code, TWANG, developped at CRPP.
* DNP-NMR: Dynamic Nuclear Polarization - Nuclear Magnetic Resonance
Practical information
- Informed public
- Free
Organizer
- CRPP
Contact
- Paolo Ricci