| Autor: |
K. Polykandriotis, V. Bouras, S.V. Benson, William B. Colson, A. Kalfoutzos, J. Blau, George R. Neil |
| Rok vydání: |
2002 |
| Předmět: |
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| Zdroj: |
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 483:138-141 |
| ISSN: |
0168-9002 |
| Popis: |
The Thomas Jefferson National Accelerator Facility (TJNAF) free electron laser (FEL) can be upgraded to operate at 100 kW average power in the near future using a configuration that recirculates the electron beam to recover energy. It is important to extract the maximum energy from the electron beam in a pass through the undulator while inducing the minimum amount of exhaust energy spread. A larger energy extraction reduces the requirement for a large recirculating current, while a smaller exhaust energy spread allows the intense electron beam to be recirculated without damaging components. To improve FEL performance, we explore the use of the step-tapered undulator, which alters the resonance condition halfway through the undulator. Short pulses complicate the desired interaction. Comparisons are made to the conventional periodic and linearly-tapered undulators. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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