Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Lung-Hai Chang"'
Design and Optimization of the High Order Modes Damper for a 1.5 GHz Superconducting Harmonic Cavity
Autor:
Tsung-Chi Yu, Meng-Shu Yeh, Chaoen Wang, Mei-Hsia Chang, Chih-Hung Lo, Ling-Jhen Chen, Zong-Kai Liu, Li Yi-Ta, Lung-Hai Chang, Fu-Yu Chang, Fu-Tsai Chung, Shian-Wen Chang, Ming-Chyuan Lin
Publikováno v:
IEEE Transactions on Applied Superconductivity. 31:1-5
The installation of a superconducting radio-frequency (SRF) cavity can improve the beam lifetime via increasing the electron bunch length. A prototype 1.5-GHz SRF passive harmonic cavity working at 4.5 K was designed for The Taiwan Photon Source (TPS
Autor:
Zong-Kai Liu, Chih-Hung Lo, Fu-Yu Chang, Ling-Jhen Chen, Ming-Chyuan Lin, Mei-Hsia Chang, Yi-Ta Li, Tsung-Chi Yu, Meng-Shu Yeh, Lung-Hai Chang, Shian-Wen Chang, Fu-Tsai Chung
Publikováno v:
IEEE Transactions on Applied Superconductivity. 29:1-5
Superconducting radio frequency cavities are used as main accelerating cavities and harmonic cavities in modern light sources. The addition of a harmonic cavity provides the possibility to increase the electron bunch length and therefore to improve t
Autor:
Mei-Hsia Chang, Yi-Ta Li, Chih-Hung Lo, Fu-Yu Chang, Chaoen Wang, Lung-Hai Chang, Tsung-Chi Yu, Ling-Jhen Chen, Ming-Chyuan Lin, Shian-Wen Chang, Meng-Shu Yeh, Zong-Kai Liu, Fu-Tsai Chung
Publikováno v:
IEEE Transactions on Applied Superconductivity. 29:1-5
A vertical test for a 500-MHz superconducting radio frequency (SRF) cavity succeeded in the RF laboratory of the National Synchrotron Radiation Research Center. The test system, consisting of a vertical test cryostat, an RF power amplifier, a tunable
Autor:
Shian-Wen Chang, Meng-Shu Yeh, Chih-Hung Lo, Ming-Chyuan Lin, Fu-Tsai Chung, Lung-Hai Chang, Chaoen Wang, Ling-Jhen Chen, Zong-Kai Liu, Fu-Yu Chang, Tsung-Chi Yu, Mei-Hsia Chang
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 894:57-71
A superconducting radio frequency (SRF) cavity provides superior stability to power high intensity light sources and can suppress coupled-bunch instabilities due to its smaller impedance for higher order modes. Because of these features, SRF cavities
Autor:
Chaoen Wang, Meng-Shu Yeh, Mei-Hsia Chang, Zong-Kai Liu, Ling-Jhen Chen, Lung-Hai Chang, Chi-Lin Tsai, Ming-Chyuan Lin, Fu-Tsai Chung, Chih-Hung Lo, Tsung-Chi Yu
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 872:150-159
Excitation of multipacting, enhanced by gas condensation on cold surfaces of the high power input coupler in a SRF module poses the highest challenge for reliable SRF operation under high average RF power. This could prevent the light source SRF modu
Autor:
Fu-Tsai Chung, Zong-Kai Liu, Meng-Shu Yeh, Fu-Yu Chang, Shian-Wen Chang, YiDa Li, Ling-Jhen Chen, Mei-Hsia Chang, Tsung-Chi Yu, Ming-Chyuan Lin, Chaoen Wang, Chih-Hung Lo, Lung-Hai Chang
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 978:164445
Facilities with a synchrotron light source at present utilize both vacuum-tube and solid-state RF sources to accelerate an electron beam, thanks to the rapid development of semiconductor technology. In NSRRC, a retired 500-MHz 100-kW klystron-based R
Autor:
Chih-Hung Lo, Mei-Hsia Chang, Ming-Hsun Tsai, Yu-Han Lin, Tsung-Chi Yu, Ling-Jhen Chen, Ming-Chyuan Lin, Zong-Kai Liu, Meng-Shu Yeh, Tz-Te Yang, Lung-Hai Chang, Fu-Tsai Chung, Chaoen Wang
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 775:46-53
Contemporary light sources operate in a top-up mode to maintain their photon intensity quasi-constant so as to improve significantly the thermal stability of the photon beam and to maximize ultimately the average photon flux at a designed maximum ope
Design and Operation of the Dual Return Valves to Stabilize Helium Vessel Pressure of the SRF Module
Autor:
Tsung-Chi Yu, Mei-Hsia Chang, Lung-Hai Chang, Ming-Hsun Tsai, Fu-Tsai Chung, Zong-Kai Liu, Ling-Jhen Chen, Chih-Lung Lo, Ming-Chyuan Lin, Po-Yuan Chen, Chi-Lin Tsai, Meng-Shu Yeh, Chaoen Wang
Publikováno v:
Proceedings of the 2016 International Conference on Electrical, Mechanical and Industrial Engineering.
* Corresponding author Abstract—The Taiwan Photon Source at National Synchrotron Radiation Research Center selects the KEK-B type superconducting radio-frequency (SRF) module to deliver RF energy to the 3-GeV electrons circulated in the storage rin
Autor:
Fu-Tsai Chung, Tz-Te Yang, Meng-Shu Yeh, Mei-Hsia Chang, Ming-Hsun Tsai, Chih-Hung Lo, Chaoen Wang, Ming-Chyuan Lin, Chih-Kai Liu, Tsung-Chi Yu, Yu-Hang Lin, Lung-Hai Chang, Ling-Jhen Chen
Publikováno v:
IEEE Transactions on Applied Superconductivity. 21:1908-1913
The thermal radiation of a superconducting RF (SRF) module is simulated using software (ANSYS FLUENT) for three-dimensional computational fluid dynamics (CFD). The heat radiating from beam tubes and an input-power coupler (of waveguide type) of the S
Autor:
Tsung-Chi Yu, Chih-Hung Lo, Tz-Te Yang, Meng-Shu Yeh, Yu-Hang Lin, Lung-Hai Chang, Mei-Hsia Chang, Ming-Hsun Tsai, Ming-Chyuan Lin, Ling-Jhen Chen, Fu-Tsai Chung, T. Furuya, Chaoen Wang, Chih-Kai Liu
Publikováno v:
IEEE Transactions on Applied Superconductivity. 21:2605-2608
An SRF cavity is generally manufactured with a shell structure to decrease the temperature of the inner surface and consequently to decrease the rf surface resistance. During operation, the SRF cavity is immersed in a bath of liquid helium while its