论文标题
LCLS II项目的SRF装扮腔/调谐器系统的加速终身测试
Accelerated Lifetime Test of The SRF Dressed Cavity/Tuner System for LCLS II HE Project
论文作者
论文摘要
正在考虑将频率的抗曲子方法用于应用于LCLS-II-HE超导LINAC，以同时支持多个驱动器线，以产生多能电子束[1]。调谐器的设计已更改，以提供大约3倍的频率调谐范围。频道操作（OFO）的工作要求指出，每月至少两次调整腔体。与LCLS-II需求相比，该规范要求调谐器寿命不断增长20倍。在Fnal的HTS上进行了LCLS-II穿着腔的LCLS-II的加速寿命测试。将介绍对调谐器压电和步进运动执行器的表现的详细分析和影响。此外，将出现在装饰腔的寿命测试的结果，当冷却至2 k并压缩2.6毫米时，将出现大约2000个周期的结果。
The off-frequency detune method is being considered for application in the LCLS-II-HE superconducting linac to produce multi-energy electron beams for supporting multiple undulator lines simultaneously [1]. Design of the tuner has been changed to deliver roughly 3 times larger frequency tuning range. Working requirements for off-frequency operation (OFO) state that cavities be tuned at least twice a month. This specification requires the in-crease of the tuner longevity by 20 times compared with LCLS-II demands. Accelerated longevity tests of the LCLS-II HE dressed cavity with tuner were conducted at FNAL's HTS. Detail analysis of wearing and impacts on performances of the tuner's piezo and stepper motor actuators will be presented. Additionally, results of longevity testing of the dressed cavity bellow, when cooled down to 2 K and compressed by 2.6 mm for roughly 2000 cycles, will be presented.
