| Paper | Title | Page |
|---|
| WEP50 | Input Couplers for KEKB Crab Cavities | 606 |
| | - K. Nakanishi, K. Hara, K. Hosoyama, Y. Kojima, S. Mitsunobu, Y. Yamamoto
KEK - K. Okihira, K. Sennyu
MHI Kobe - T. Tanaka
Broad Wireless Corporation
| |
| | The RF input couplers for KEKB crab cavities were designed,
fabricated and installed. The input coupler is shown
in figure 1. The RF input coupler has a ceramic RF window
and a T-stub structure. The shape of T-stub structure
and length of the probe were decided using RF simulation
program. The RF window and the doorknob translator may
cause some reflection. The RF windows for superconducting
accelerator cavities for KEKB (KEKB-SCC) and the
doorknob translators for TRISTAN were used. According
to the procedure of assembling the RF input coupler
for KEKB-SCC, they were rinsed and assembled. Aging
was done individually. After that, they were installed into
cryostats for crab cavities. These cryostats were installed
to KEKB and have been working. Three input couplers,
which are included for prototype cryostat, were prepared. | |