| Autor: |
J. Qiang, J. Corlett, C. E. Mitchell, C. F. Papadopoulos, G. Penn, M. Placidi, M. Reinsch, R. D. Ryne, F. Sannibale, C. Sun, M. Venturini, P. Emma, S. Reiche |
| Jazyk: |
angličtina |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
Physical Review Special Topics. Accelerators and Beams, Vol 17, Iss 3, p 030701 (2014) |
| Druh dokumentu: |
article |
| ISSN: |
1098-4402 |
| DOI: |
10.1103/PhysRevSTAB.17.030701 |
| Popis: |
In this paper we report on start-to-end simulation of a next generation light source based on a high repetition rate free electron laser (FEL) driven by a CW superconducting linac. The simulation integrated the entire system in a seamless start-to-end model, including birth of photoelectrons, transport of electron beam through 600 m of the accelerator beam delivery system, and generation of coherent x-ray radiation in a two-stage self-seeding undulator beam line. The entire simulation used the real number of electrons (∼2 billion electrons/bunch) to capture the details of the physical shot noise without resorting to artificial filtering to suppress numerical noise. The simulation results shed light on several issues including the importance of space-charge effects near the laser heater and the reliability of x-ray radiation power predictions when using a smaller number of simulation particles. The results show that the microbunching instability in the linac can be controlled with 15 keV uncorrelated energy spread induced by a laser heater and demonstrate that high brightness and flux 1 nm x-ray radiation (∼10^{12} photons/pulse) with fully spatial and temporal coherence is achievable. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
