Investigation on Realization of High-<i>Q</i> Value and High Accelerating Gradient Superconducting Cavity via Furnace Baking Method
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- Ito Hayato
- KEK, High Energy Accelerator Research Organization
Bibliographic Information
- Other Title
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- Furnace Baking法による超伝導加速空洞の高<i>Q</i>値・高加速勾配化について
Abstract
<p>The performance of superconducting radio-frequency cavities depends on niobium surface conditions. Recently, various surface treatments focused on heat treatment have been investigated to realize the high-Q value and high accelerating gradient cavities. We report the influence of a new heat treatment process called furnace baking on the performance of 1.3 GHz TESLA type superconducting radio-frequency cavities made of niobium. Furnace baking is simpler than the previously reported heat treatment method, therefore it is easy to apply to the cavities. We find that the Q value increases after furnace baking at temperatures ranging from 250 to 400°C and Q behavior to the accelerating gradient are similar to nitrogen doped cavities. Furthermore, we find a significant difference in the surface resistance between baking temperatures ranging from 200 to 800°C.</p>
Journal
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- Journal of the Particle Accelerator Society of Japan
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Journal of the Particle Accelerator Society of Japan 19 (1), 18-24, 2022-04-30
Particle Accelerator Society of Japan
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Details 詳細情報について
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- CRID
- 1390854957933044608
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- ISSN
- 24361488
- 13493833
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- Text Lang
- ja
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- Data Source
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- JaLC
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- Abstract License Flag
- Allowed