IHEP 1.3 GHz 9-cell高Q腔CW冷试验中寄生模的抑制
Parasitic modes suppression in CW cold tests of 1.3 GHz 9-cell high Q cavities at IHEP
摘要：
1.3GHz九腔谐振腔在2K液氦浴中的连续波射频测试是谐振腔研制中的一个重要环节。通过试验发现了一些问题，并据此对型腔工艺进行了优化和改进。最近，在IHEP进行了1.3 GHz 9-cell腔体的中温（中T）炉烘烤。通过中温烘烤的进行，腔体的品质因数得到了很大的提高。而高Q腔连续波冷态测试中会出现寄生模的激发，这对腔梯度和品质因数的测定是一个误差源。为了保证超导腔的测试精度，我们对测试系统进行了改进。最后，寄生模被完全抑制，保证了高Q腔的连续波射频冷测。
英文摘要：
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 quality factor determination. In order to ensure the testing accuracy of superconducting cavity, we have improved the testing system. Finally, the parasitic mode is completely suppressed and the CW RF cold test of high Q cavity is guaranteed.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
