Design of power and HOM couplers for TESLA
Conference
·
OSTI ID:416727
- Fermi National Accelerator Lab., Batavia, IL (United States)
The basic TESLA accelerating structure is a 1 m long, 9-cell superconducting cavity operating at a frequency of 1.3 GHz and an accelerating gradient of 25 MV/m. Each of these cavities has one fundamental mode power input coupler and two higher order mode (HOM) couplers. The rf requirement of the input coupler is a peak power of 200 kW for 1.3 ms at a 10 Hz repetition rate. The input coupler must also accommodate a 15 mm cavity motion during cryostat cool down and must minimize the cryogenic heat load with and without rf power present. The HOM couplers must extract from the cavities the beam induced HOM energy that does not propagate to the rf absorbers located at the end of each cryomodule. Two distinct input coupler and two distinct HOM coupler designs have been produced. Their design criteria and performance will be reported.
- OSTI ID:
- 416727
- Report Number(s):
- CONF-950722--
- Country of Publication:
- United States
- Language:
- English
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