Status of the superconducting CH-structure

H. Podlech, A. Bechtold, H. Liebermann, U. Ratzinger
2007 2007 IEEE Particle Accelerator Conference (PAC)  
The CH-Structure which has been developed at IAP in Frankfurt is the first superconducting multi-cell drift tube cavity for the low and medium energy range between 5 and 150 MeV. The prototype cavity which has been built consists of 19 accelerating cells and has an operation frequency of 360 MHz (see fig. 1 ). The cavity has been tested for several times, gradients of up to 4.7 MV/m have been achieved in cw operation. Presently the limitation is field induced quenching. To localize possible
more » ... calize possible field emitting sites a detailed X-ray analysis has been performed. One main emitter could be identified. Additionally, warm measurements have been performed to test the tuning concept of the cavity. A tuning sensitivity of 400 kHz/mm has been measured.
doi:10.1109/pac.2007.4441148 fatcat:bh47zk2cpfhnlpog3ecxm2pq6e