JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
@inproceedings{ego:fls2023-tu3d4,
author = {H. Ego and T. Asaka and T. Inagaki and N. Nishimori and T. Ohshima and H. Tanaka and T. Tomai and H. Yamaguchi},
% author = {H. Ego and T. Asaka and T. Inagaki and N. Nishimori and T. Ohshima and H. Tanaka and others},
% author = {H. Ego and others},
title = {{Compact HOM-damped RF Cavity for a Next Generation Light Source}},
% booktitle = {Proc. FLS'23},
booktitle = {Proc. 67th ICFA Adv. Beam Dyn. Workshop Future Light Sources (FLS'23)},
eventdate = {2023-08-27/2023-09-01},
pages = {74--76},
paper = {TU3D4},
language = {english},
keywords = {cavity, HOM, damping, impedance, operation},
venue = {Luzern, Switzerland},
series = {ICFA Advanced Beam Dynamics Workshop},
number = {67},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {01},
year = {2024},
issn = {2673-7035},
isbn = {978-3-95450-224-0},
doi = {10.18429/JACoW-FLS2023-TU3D4},
url = {http://jacow.org/fls2023/papers/tu3d4.pdf},
abstract = {{A beam-accelerating RF cavity with a new HOM-damping structure was designed in order to suppress coupled-bunch instabilities in a next generation light source with an ultra-low emittance and supplying X-rays approaching their diffraction limits. The TM020 mode at 509 MHz is selected as a beam-accelerating mode because it has a high Q-value of 60,000 and a shunt impedance sufficient for beam acceleration and brings a compact HOM-damping structure to the cavity differently from massive types of cavities with waveguides or pipes extracting HOM power. Two shallow slots are cut on the cavity inner-wall and materials absorbing RF waves are directly fitted into them. They work as HOM dampers without affecting the RF properties of the beam-accelerating mode. A prototype cavity of OFHC copper was fabricated to demonstrate the HOM-damping and generating an accelerating voltage of 900 kV in the cavity. Since the cavity was successful in operation up to 135 kW, the feasibility of both the high-power operation and the damping structure was proved. Four actual cavities were produced and installed to the new 3-GeV synchrotron radiation facility, NanoTerasu in Japan.}},
}