Paper |
Title |
Page |
MOPO107 |
Performance Evaluation of the RF Reference Phase Stabilization System on Fiber-optical Link for KEK e−/e+ Injector LINAC |
230 |
SPWR027 |
|
|
- N. Liu, B. Du
Sokendai - Hayama, Hayama, Japan
- D.A. Arakawa, H. Katagiri, T. Matsumoto, S. Michizono, T. Miura, F. Qiu, Y. Yano
KEK, Ibaraki, Japan
- T. Matsumoto, T. Miura, F. Qiu
Sokendai, Ibaraki, Japan
|
|
|
KEK e−/e+ injector is the 600 m J-shaped LINAC which has 8 RF sectors. Stabilization of RF phase reference for long distance transmission is necessary for stable RF operation. In the present system, single-mode fiber-optical links without feedback control are used from sector 2 to 5. For the SuperKEKB, the phase stability requirement is within 0.1 deg. rms. The more stable RF phase reference is necessary to improve the phase stability. In this paper, a feedback control system for RF reference phase stabilization is tested for system performance evaluation. The temperature and humidity characteristics of the electric and optical components and phase stabilized optical fiber (PSOF) with different wavelengths will also be presented.
|
|
|
Poster MOPO107 [2.026 MB]
|
|
DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-LINAC2018-MOPO107
|
|
About • |
paper received ※ 12 September 2018 paper accepted ※ 21 September 2018 issue date ※ 18 January 2019 |
|
Export • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
|
|
THPO003 |
L-band Resonant Ring for Testing RF Windows for ILC |
679 |
SPWR005 |
|
|
- B. Du, N. Liu
Sokendai - Hayama, Hayama, Japan
- T. Matsumoto, S. Michizono, T. Miura, F. Qiu
KEK, Ibaraki, Japan
- T. Matsumoto, T. Miura, F. Qiu
Sokendai, Ibaraki, Japan
|
|
|
A resonant ring is widely used for the breakdown test of RF components under high power. It can reach power gain of more than 10dB, which is limited by the attenua-tion of the ring. An L-band resonant ring is constructed for testing RF components of International Linear Collid-er (ILC) which is based on an RF frequency of 1.3GHz. The target of the high power test is 5 MW. We have fin-ished the test of an input power of 500 W using a solid state amplifier, and the principle of the resonant ring is verified. The resonant ring is tuned to an optimal condi-tion, which is preparation for high power operation. This paper details the principle, construction, and test of the L-band resonant ring.
|
|
|
Poster THPO003 [2.301 MB]
|
|
DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-LINAC2018-THPO003
|
|
About • |
paper received ※ 13 September 2018 paper accepted ※ 21 September 2018 issue date ※ 18 January 2019 |
|
Export • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
|
|
THPO096 |
Design Study of a High Efficiency Klystron for SuperKEKB Linac |
901 |
|
- F. Qiu, S. Fukuda, S. Matsumoto, T. Matsumoto, T. Miura, T. Natsui
KEK, Ibaraki, Japan
|
|
|
The injector linear accelerator (linac) for the SuperKEKB particle accelerator requires a higher efficiency klystron than the currently used 50 MW, S-band, pulsed unit (PV3050/E3730), which operates at the same voltage, to increase the power redundancy. The efficiency is expected to improve from the currently observed 45% to more than 60%. We propose a type of high efficiency klystron using novel bunching mechanisms. The 1-D disk model based code is used for preliminary optimization of the tube parameters; these parameters are further checked by 2-D codes known as field charge interaction (FCI) and MAGIC. In this paper, the design consideration of the high efficiency klystron is presented.
|
|
DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-LINAC2018-THPO096
|
|
About • |
paper received ※ 12 September 2018 paper accepted ※ 20 September 2018 issue date ※ 18 January 2019 |
|
Export • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
|
|