POWER SPECTRUM CALCULATION FOR THE CORNELL WIGGLER A SASE EXPERIMENT AT BNL
- BROOKHAVEN NATIONAL LABORATORY
Recently the authors showed [I] that the widely used simulation code TDA3D, even though a single frequency code, can be used to determine the power spectrum in the SASE process with excellent approximation in the exponential growth regime. In this paper, they apply this method to the BNL Cornell Wiggler A SASE experiment as an example. When the gain is not very high, there are many modes in the radiation, which seems to make the analytical calculation very difficult. However, they show that the increment of the radiation due to SASE over the spontaneous radiation can be expanded in terms of guided modes with rapid convergence. Thus when the spontaneous radiation is subtracted from the SASE power during the calculation, there is a good agreement between the analytical theory and the numerical simulation.
- Research Organization:
- Brookhaven National Lab., Upton, NY (US)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 758973
- Report Number(s):
- BNL--65854; KC0204011; KC0204011
- Country of Publication:
- United States
- Language:
- English
Similar Records
Calculation of the output power in self-amplified spontaneous radiation using scaling of power with number of simulation particles
The APS SASE FEL : modeling and code comparison.