Paper | Title | Page |
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TUPO049 | Nitrogen Doping Study With 1.3 GHz Single Cell Superconducting Cavities | 442 |
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Nitrogen doping studies were carried out at Peking University. A series of 1.3 GHz single cell cavities fabricated with OTIC large grain niobium material were annealed and doped in the furnace of Peking University, and electropolished by a simple EP device. Light doping recipe and heavy doping recipe are both adopted for comparison. The results and analysis are presented in this paper. | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-TUPO049 | |
About • | paper received ※ 12 September 2018 paper accepted ※ 19 September 2018 issue date ※ 18 January 2019 | |
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TUPO064 | Pre-study of CEPC SRF Cavity | 476 |
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Funding: This study was supported by National Key Programme for S&T Research and Development (Grant NO.: 2016YFA0400400) and National Natural Science Foundation of China (Grant NO.:11505197). CEPC will use 650 MHz cavities for the collider and 1.3 GHz cavities for the Booster. Each booster cryomod-ule contains eight 1.3 GHz 9-cell cavities, which is simi-lar as LCLS-II, E-XFEL and ILC. Each collider cryo-module contains six 650 MHz 2-cell cavities, which is totally new. Therefore, the pre-study mainly focuses on the 650 MHz 2-cell cavity. N-doping and vertical tests of 650 MHz 1-cell and 2-cell cavities have been carried out at IHEP, which have achieved good results. A test cryomodule, which consists of two 650 MHz 2-cell cavities, has also begun as the first step to the full-scale cryomodule. |
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DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-TUPO064 | |
About • | paper received ※ 31 August 2018 paper accepted ※ 19 September 2018 issue date ※ 18 January 2019 | |
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THPO076 | Multiphysics Design Studies of a Superconducting Quarter-wave Resonator at Peking University | 863 |
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Funding: This work is supported by National Basic Research Program (2014CB845504) A 81.25MHz, geometric β=0.046 quarter-wave resonator has been designed and analysed at Peking University. This paper mainly presents the multi-physics studies of this cavity, include electromagnetic design, mechanical analysis and multipacting simulation, to predict its behaviour under practical operating process. Various transverse vibration modes of inner conductor were found under different fixed conditions and an asymmetric shorting plate was adopted to avoid high possibility of multipacting "quarter-wave resonator" "multiphysics" "multipacting" "frequency detuning" "stiffening design" |
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DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO076 | |
About • | paper received ※ 12 September 2018 paper accepted ※ 21 September 2018 issue date ※ 18 January 2019 | |
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