The First Nine-Cell TESLA Cavity Made in China

Lu, Xiangyang; Sheng-Wen, Quan; Zhang, Baocheng; Jian-Kui, Hao; Lin, Lin; Xu, Wei; Wang, Erdong; Fang, Wang; Song, Jin Dong; Tian-Mu, Xin; Zhong-Yuan, Yao; Chen, Jiaer

doi:10.1088/0256-307x/25/11/028

Cited by 2 publications

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All of them are 1300 MHz TESLA-style 9-cell cavity specification [1]. The first fine grain cavity, without high order mode (HOM) couplers and other parts at the end-groups, has been tested at the Thomas Jefferson National Accelerator Facility, and it achieved an ac-celerating gradient of 23 MV/m with no quench [2]. The cavity reported in this paper is the second fine grain 9-cell TESLA-style cavity and is the first full fine grain 9-cell cavity with complete end-group components including the input coupler port, HOM coupler ports and pick-up field probe port.…”

Section: Introductionmentioning

confidence: 99%

Cold RF test and associated mechanical features correlation of a TESLA-style 9-cell superconducting niobium cavity built in China

Dai

Quan

et al. 2012

Chinese Phys. C

Self Cite

View full text Add to dashboard Cite

The RF performance of a 1.3 GHz 9-cell superconducting niobium cavity was evaluated at cryogenic temperatures following surface processing by using the standard ILC-style recipe. The cavity is a TESLA-style 9-cell superconducting niobium cavity, with complete end group components including a higher order mode coupler, built in China for practical applications. An accelerating gradient of 28.6 MV/m was achieved at an unloaded quality factor of 4×109. The morphological property of mechanical features on the RF surface of this cavity was characterized through optical inspection. Correlation between the observed mechanical features and the RF performance of the cavity is attempted.

show abstract

Section: Introductionmentioning

confidence: 99%

Cold RF test and associated mechanical features correlation of a TESLA-style 9-cell superconducting niobium cavity built in China

Dai

Quan

et al. 2012

Chinese Phys. C

Self Cite

View full text Add to dashboard Cite

show abstract

Influence of Different Beam Oscillation Patterns in Electron Beam Welding of Niobium Sheets with Different Thickness

Tao

Liu

et al. 2022

Materials

View full text Add to dashboard Cite

The electron beam welding of the tubes and the half-cells for our 1.3 GHz single-cell superconducting radiofrequency (SRF) cavities is complex due to the different thicknesses of the tubes and the half-cells in the iris region. However, the mechanical properties and microstructure of the iris welds in niobium SRF cavities have barely been explored in previous studies. For high-quality iris welds, welding experiments of niobium sheets of 2 mm and 2.8 mm were carried out under different oscillating conditions. The results show that welding with no oscillation or sinusoidal oscillation may not be applied in actual welding owing to the large misalignment of the bottom surface. The weld grains were not significantly refined through beam oscillation. The joints with infinity oscillation had a higher elongation than circular oscillation, which exhibited a brittle fracture in the tensile tests at 77 K. Nevertheless, the texture of the weld with infinity oscillation implies poor formability, so the feasibility of infinity oscillation in actual welding needs verification in future study.

show abstract

The First Nine-Cell TESLA Cavity Made in China

Cited by 2 publications

References 1 publication

Cold RF test and associated mechanical features correlation of a TESLA-style 9-cell superconducting niobium cavity built in China

Cold RF test and associated mechanical features correlation of a TESLA-style 9-cell superconducting niobium cavity built in China

Influence of Different Beam Oscillation Patterns in Electron Beam Welding of Niobium Sheets with Different Thickness

Contact Info

Product

Resources

About