Wen Shenglin, Shi Qikai, Zhang Yuanhang, et al. Off-line measurement experiments of far-field intensity caused by large-aperture continuous phase plates[J]. High Power Laser and Particle Beams, 2013, 25: 3343-3347. doi: 3343
Citation:
yue jun-hui, zhang lei, ma li, et al. Performance of a notch filter for BEPCII[J]. High Power Laser and Particle Beams, 2005, 17.
Wen Shenglin, Shi Qikai, Zhang Yuanhang, et al. Off-line measurement experiments of far-field intensity caused by large-aperture continuous phase plates[J]. High Power Laser and Particle Beams, 2013, 25: 3343-3347. doi: 3343
Citation:
yue jun-hui, zhang lei, ma li, et al. Performance of a notch filter for BEPCII[J]. High Power Laser and Particle Beams, 2005, 17.
The high beam current (0.9 A) and the large number of bunches (93 bunches) may cause coupled bunch instabilities (CBI) in BEPCII. Active feedback systems are required to suppress CBI. The BEPCII transverse feedback system mainly includes three parts that are the signal detection unit, the signal processing unit, and the kicker. The notch filter is an important part of the signal processing unit. In this paper a simple notch filter which is combined with two cables, a splitter and a combiner is introduced. And a -41 dB notch depth is achieved. Transverse feedback system with this notch filter succeeds in curing the instability of the beam. It is proved that the filter can satisfy the requirement of the BEPCII transverse feedback system.
Wen Shenglin, Shi Qikai, Zhang Yuanhang, et al. Off-line measurement experiments of far-field intensity caused by large-aperture continuous phase plates[J]. High Power Laser and Particle Beams, 2013, 25: 3343-3347. doi: 3343
Wen Shenglin, Shi Qikai, Zhang Yuanhang, et al. Off-line measurement experiments of far-field intensity caused by large-aperture continuous phase plates[J]. High Power Laser and Particle Beams, 2013, 25: 3343-3347. doi: 3343
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