Abstract
| Original language | Undefined |
|---|---|
| Pages (from-to) | 020702-1-020702-7 |
| Number of pages | 7 |
| Journal | Physical review special topics : Accelerators and beams |
| Volume | 10 |
| Issue number | 020702 |
| DOIs | |
| Publication status | Published - 2007 |
Keywords
- IR-57942
- METIS-238869
Cite this
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Liner radius fluctuations in a high-gain Cherenkov free-electron laser. / de la Fuente Valentin, M.I.; van der Slot, Petrus J.M.; Boller, Klaus J.
In: Physical review special topics : Accelerators and beams, Vol. 10, No. 020702, 2007, p. 020702-1-020702-7.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Liner radius fluctuations in a high-gain Cherenkov free-electron laser
AU - de la Fuente Valentin, M.I.
AU - van der Slot, Petrus J.M.
AU - Boller, Klaus J.
PY - 2007
Y1 - 2007
N2 - Phase shifts in the propagating electromagnetic field of a Cherenkov free-electron laser (CFEL) can affect its gain. The phase velocity of an electromagnetic wave varies, for example, when the lined waveguide is inhomogeneous along its length. In this paper, we study quantitatively the saturated power of a particular CFEL at both weak and strong electron-beam pumping when the inner radius of the liner contains fluctuations along the waveguide. We show that the gain bandwidth of the CFEL is substantially broadened when the CFEL is pumped with a high-current beam. We also show that the design of a CFEL needs to include optimization with respect to sensitivity to liner fluctuations, especially for weakly pumped CFELs, that is, CFELs that use a low-current electron-beam density. This optimization can be relaxed for more strongly pumped CFELs.
AB - Phase shifts in the propagating electromagnetic field of a Cherenkov free-electron laser (CFEL) can affect its gain. The phase velocity of an electromagnetic wave varies, for example, when the lined waveguide is inhomogeneous along its length. In this paper, we study quantitatively the saturated power of a particular CFEL at both weak and strong electron-beam pumping when the inner radius of the liner contains fluctuations along the waveguide. We show that the gain bandwidth of the CFEL is substantially broadened when the CFEL is pumped with a high-current beam. We also show that the design of a CFEL needs to include optimization with respect to sensitivity to liner fluctuations, especially for weakly pumped CFELs, that is, CFELs that use a low-current electron-beam density. This optimization can be relaxed for more strongly pumped CFELs.
KW - IR-57942
KW - METIS-238869
U2 - 10.1103/PhysRevSTAB.10.020702
DO - 10.1103/PhysRevSTAB.10.020702
M3 - Article
VL - 10
SP - 020702-1-020702-7
JO - Physical review special topics : Accelerators and beams
JF - Physical review special topics : Accelerators and beams
SN - 1098-4402
IS - 020702
ER -