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@inproceedings{zhang:cyclotrons2022-mopo003, author = {R. Zhang and X.M. Su and X.W. Wang and Z. Xu}, title = {{Sawtooth Wave Buncher Upgrade for SFC Cyclotron}}, % booktitle = {Proc. CYCLOTRONS'22}, booktitle = {Proc. 23rd Int. Conf. Cyclotrons Appl. (CYCLOTRONS'22)}, pages = {51--53}, paper = {MOPO003}, language = {english}, keywords = {cyclotron, ECR, bunching, injection, operation}, venue = {Beijing, China}, series = {International Conference on Cyclotrons and their Applications}, number = {23}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {10}, year = {2023}, issn = {2673-5482}, isbn = {978-3-95450-212-7}, doi = {10.18429/JACoW-CYCLOTRONS2022-MOPO003}, url = {https://jacow.org/cyclotrons2022/papers/mopo003.pdf}, abstract = {{To increase extracted beam intensity, the SFC cyclotron requires that the sawtooth wave buncher on its injection line provide the effective voltage up to 2.5kV and cover a wide frequency range of six times. We develope a multi-harmonic synthesis method by combining a broadband amplifier and impedance transformer, which provide a high-voltage single-gap buncher at limited space and cost. With this method, the maximum voltage of the new buncher exceeds 2.5kV and the beam intensity increases by a factor of 6.7.}}, }