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RIS citation export for WEPWB089: Theoretical Model of External Q Tuning for an SRF Cavity with Waveguide Tuner

TY  - CONF
AU  - Xu, W.
AU  - Conway, Z.A.
AU  - Daly, E.F.
AU  - Guo, J.
AU  - Rimmer, R.A.
AU  - Smith, K.S.
AU  - Zaltsman, A.
ED  - Saito, Kenji
ED  - Xu, Ting
ED  - Sakamoto, Naruhiko
ED  - Schaa, Volker R.W.
ED  - Thomas, Paul W.
TI  - Theoretical Model of External Q Tuning for an SRF Cavity with Waveguide Tuner
J2  - Proc. of SRF2023, Grand Rapids, MI, USA, 25-30 June 2023
CY  - Grand Rapids, MI, USA
T2  - International Conference on RF Superconductivity
T3  - 21
LA  - english
AB  - A wide range of electron beam energies (5 ¿ 18 GeV) and beam currents (0.2 ¿ 2.5 A) in EIC Electron Storage Ring (ESR) operating scenarios requires a capability of adjusting coupling factor up to a factor of 20 for the 591 MHz Superconducting Radio Frequency (SRF) cavities, which contains two fundamental power couplers (FPC) delivering continuous wave (CW) 800 kW RF power to the beam. Currently, adjusting external Q of a SRF cavity is done by varying protrusion of FPC¿s inner conductor in beam pipe or using three stub tuner to adjust external Q value, which either has limit on tuning range or limit on operating power. This paper presents a method of tuning the FPC external Q by a multiple-waveguide tuner, which allows for high power, wide tuning range operations. The theoretical model of matching beam impedance with waveguide tuner and detailed matching conditions and limits will be presented. Follow the theoretical model, a preliminary design of a 3D waveguide tuner will be presented.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 794
EP  - 796
KW  - cavity
KW  - GUI
KW  - SRF
KW  - operation
KW  - electron
DA  - 2023/09
PY  - 2023
SN  - 2673-5504
SN  - 978-3-95450-234-9
DO  - doi:10.18429/JACoW-SRF2023-WEPWB089
UR  - https://jacow.org/srf2023/papers/wepwb089.pdf
ER  -