The laser heater has been proposed to damp the microbunching instability affecting the operation of free electron laser (FEL) self-amplified spontaneous emission (SASE) devices. The heater may be provided by an external laser or by a FEL oscillator using the same electron beam driving the SASE-FEL operation. The second solution offers undoubtful advantages, which will be discussed in this paper. We present simple physical arguments which allow the derivation of a criterion yielding the amount of laser power necessary to damp the instability, without compromising the FEL SASE operation.
A model of laser heater undulator system for self-amplified free electron lasers / G., Dattoli; Migliorati, Mauro. - In: JOURNAL OF APPLIED PHYSICS. - ISSN 0021-8979. - 105:(2009), pp. 023111-1-023111-4. [10.1063/1.3054513]
A model of laser heater undulator system for self-amplified free electron lasers
MIGLIORATI, Mauro
2009
Abstract
The laser heater has been proposed to damp the microbunching instability affecting the operation of free electron laser (FEL) self-amplified spontaneous emission (SASE) devices. The heater may be provided by an external laser or by a FEL oscillator using the same electron beam driving the SASE-FEL operation. The second solution offers undoubtful advantages, which will be discussed in this paper. We present simple physical arguments which allow the derivation of a criterion yielding the amount of laser power necessary to damp the instability, without compromising the FEL SASE operation.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
