TY - JOUR
T1 - FEL induced electron bunch heating observed by a method based on synchronous phase detection
AU - Hosaka, M.
AU - Koda, S.
AU - Katoh, M.
AU - Yamazaki, J.
AU - Hama, H.
N1 - Funding Information:
This work is supported by a Grant-in-Aid for Scientific Research from Ministry of Education, Science and Culture of Japan, Contract No. 10450039.
PY - 2001/11/21
Y1 - 2001/11/21
N2 - A new method for monitoring instantaneous bunch length has been developed on the UVSOR storage ring. Based on the bunch length dependence of the loss factor, the bunch length can be derived from the synchronous phase shift. Experiments using this method were performed to observe the bunch lengthening associated with the free electron laser (FEL) power variation. From the detuning dependence of the bunch heating, it was found that additional energy spread mostly has a constant ratio to the intracavity laser power normalized by the beam current. However, at the best synchronism region, the induced energy spread exhibits a strong non-linearity against the normalized FEL power and hence the power saturation is accomplished.
AB - A new method for monitoring instantaneous bunch length has been developed on the UVSOR storage ring. Based on the bunch length dependence of the loss factor, the bunch length can be derived from the synchronous phase shift. Experiments using this method were performed to observe the bunch lengthening associated with the free electron laser (FEL) power variation. From the detuning dependence of the bunch heating, it was found that additional energy spread mostly has a constant ratio to the intracavity laser power normalized by the beam current. However, at the best synchronism region, the induced energy spread exhibits a strong non-linearity against the normalized FEL power and hence the power saturation is accomplished.
KW - Free electron laser
KW - Storage ring
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U2 - 10.1016/S0168-9002(01)01573-X
DO - 10.1016/S0168-9002(01)01573-X
M3 - Conference article
AN - SCOPUS:0035930262
VL - 475
SP - 217
EP - 221
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 1-3
T2 - 22nd International Free Electron Laser Conference (FEL 2000)
Y2 - 13 August 2000 through 18 August 2000
ER -