Medium-temperature furnace bake of Superconducting Radio-Frequency cavities at IHEP

Parasitic modes suppression in CW cold tests of 1.3 GHz 9-cell high Q cavities at IHEP

The CW RF test of 1.3 GHz 9-cell cavity in liquid helium bath at 2 K is a very important key point in the cavity procurement. Some problems can be found through the test, according which to optimized and improve the process of cavity. Recently, Medium temperature (mid-T) furnace bake of 1.3 GHz 9-cell cavities have been carried out at IHEP. Through the proceed of mid-T bake, the quality factor of cavity has been greatly improved. While the excitation of the parasitic modes in the high Q cavities CW cold test has been encountered, which implies an error source for the cavity gradient and qualit…

通过烘烤后表面处理提高中温烘烤铌腔的性能

Improving the performance of mid-T baked niobium cavities through post-bake surface treatment

本研究通过烘烤后表面处理提高了中温烘烤铌腔的性能，有效改善了淬火场和品质因子。

通过去除表面污染物提升中温烘烤铌超导射频腔的性能

Performance Enhancement of Medium-Temperature Baked Niobium SRF Cavity by Surface Contamination Removal

本文研究通过化学处理去除中温烘烤铌超导射频腔表面污染物的方法，显著提升了腔的品质因数和失超场，解决了真空炉烘烤导致的性能限制问题。

首个中温烘烤1.3 GHz低温模组的高Q值和高梯度性能

High Q and high gradient performance of the first medium-temperature baking 1.3 GHz cryomodule

本文报道了世界首个含八个中温烘烤9-cell超导腔的1.3 GHz低温模组，其平均Q0达3.8E10@16 MV/m，总连续波电压超191 MV，性能显著超越CEPC、DALS及多个高重频自由电子激光设施规格。

中温热处理SRF腔在高梯度下的进一步改进

Further improvement of medium temperature heat treated SRF cavities for high gradients

本研究针对中温热处理SRF腔的高场Q斜率问题，通过额外低温烘烤处理，实现了16 MV/m下Q值超3×10^10、加速梯度达32-40 MV/m的改进。

SRF应用中铌的中温烘焙原位同步辐射X射线光电子能谱研究

In-situ Synchrotron X-Ray Photoelectron Spectroscopy Study of Medium-Temperature Baking of Niobium for SRF Application

本研究利用同步辐射XPS原位探究了铌表面在200-400 °C烘焙下的化学成分演变，揭示了氧的受控扩散机制、氟杂质的动态行为及其对各类SRF腔体性能的潜在影响，并确定了工业应用的无污染热处理参数范围。