| Paper | Title | Page |
|---|---|---|
MOOBI1 |
Numerical Methods for FEL Simulations | |
|
||
| The coupled system of radiation interacting with a co-propagating electron beam within an undulator of an FEL exhibits many degrees of freedom. Only in an idealized and simplified model the FEL equations can be solved analytically and a more complete description requires numerical methods. This presentation gives an overview about the basic algorithms, used in most FEL codes, to model a particle beam with up to 1 billion particles and a co-propagating radiation field with an Angstrom resolution in a Free-electron Laser up to several hundreds of meter long. | ||
|
Slides MOOBI1 [2.425 MB] | |
| MOOBI2 | High Harmonics from Gas, a Suitable Source for Seeding FEL from the Vacuum-ultraviolet to Soft X-ray Region | 9 |
|
||
| FEL have been recently evolving very fast in the extreme-ultraviolet to soft X-ray region. Once seeded with high harmonics generated in gas, these light sources deliver amplified emissions with properties which are, for most of them, directly linked to the injected harmonic beam, e.g. the ultrashort pulse duration for FEL and the high temporal and spatial degree of coherence. Since the last two years the developments of techniques for improving the harmonic properties for seeding FEL lead to major results on tunability, intensity, repetition rate and polarization. Actually harmonics are nowadays used for numbers of applications, before limited to FEL facility. Also, FEL based on harmonic seeding can benefit from the natural synchronization between the FEL, the harmonic and the laser used for generation, which makes it a perfect candidate for pump-probe experiment with fs resolution. | ||
|
|
Slides MOOBI2 [1.782 MB] | |