@misc{oai:repo.qst.go.jp:00077732,
 author = {Sumitomo, Yoske and 羽島, 良一 and Hayakawa, Yasushi and Sakai, Takeshi and Hajima, Ryoichi},
 month = {May},
 note = {At the LEBRA facility of Nihon U., we have an IR-FEL
oscillator to generate radiations in the range of wavelengths
1 – 6 um for various experiments. A research program has
been established to explore the application of the IR-FEL to
generate attosecond UV and X-ray pulses through the high
harmonic generation (HHG), where the IR-FEL pulses must
have a high-peak power and a short-pulse duration. For the
suitable FEL pulse generation within a limited macro-pulse
length at the LEBRA LINAC, we apply a dynamical modulation
to the electron bunch repetition, that is equivalent to a
dynamical detuning of the FEL cavity length. We illustrate
the potential performance of the IR-FEL with the dynamical
detuning by time-dependent 3D FEL simulations. We also
evaluate the enhancement of the FEL pulses by an external
cavity stacking for the sake of the HHG application., 10th International Particle Accelerator Conference},
 title = {SIMULATION OF SHORT-PULSE GENERATION FROM A DYNAMICALLY DETUNED IR-FEL OSCILLATOR AND PULSE STACKING AT AN EXTERNAL CAVITY},
 year = {2019}
}