TY - JOUR
T1 - Study of beam property on a storage ring operated with negative momentum compaction factor
AU - Hosaka, M.
AU - Hama, H.
AU - Yamazaki, J.
AU - Kinoshita, T.
N1 - Funding Information:
The authors are grateful to Dr. K. Kimura and the staff of the UVSOR facility, Institute for Molecular Science for their technical support. This work was partly supported by a Grant-in-Aid for Scientific Research from Ministry of Education, Science and Culture of Japan.
PY - 1998/4/21
Y1 - 1998/4/21
N2 - To investigate variations of the bunch length and the energy spread of the electron beam on a storage ring, which are very important beam properties for storage ring free electron lasers, we have measured longitudinal electron distributions and spectra of spontaneous radiation from an optical klystron on the UVSOR storage ring operated with both signs of negative and positive momentum compaction factors. Significant differences in the bunch lengthening and the increase of the energy spread with the beam current have been found between two operations. In a case of the negative momentum compaction, a threshold beam current for the longitudinal microwave instability was observed to be very low, meanwhile "the bunch shortening" was observed.
AB - To investigate variations of the bunch length and the energy spread of the electron beam on a storage ring, which are very important beam properties for storage ring free electron lasers, we have measured longitudinal electron distributions and spectra of spontaneous radiation from an optical klystron on the UVSOR storage ring operated with both signs of negative and positive momentum compaction factors. Significant differences in the bunch lengthening and the increase of the energy spread with the beam current have been found between two operations. In a case of the negative momentum compaction, a threshold beam current for the longitudinal microwave instability was observed to be very low, meanwhile "the bunch shortening" was observed.
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U2 - 10.1016/S0168-9002(97)01402-2
DO - 10.1016/S0168-9002(97)01402-2
M3 - Article
AN - SCOPUS:0346311126
SN - 0168-9002
VL - 407
SP - 234
EP - 240
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
IS - 1-3
ER -