1. Brad Schoenrock Advisors Dave Meidlinger Matthias Liepe
Testing SRF cavities
Brad Schoenrock
Advisors
Dave Meidlinger
Matthias Liepe

2. Preparing for testing Lab View Programs
One utilizes a log power detector
The other uses a quadrature modulator
Measuring Qext for input coupler
For cavity test we want Qext for the input coupler to be matched with Qo

3. Log Power Detector

4. Quadrature Modulator

5. Clean room testing Cleaned up cavity/stand to go into clean room
Used a network analyzer to measure transmission & reflection coefficients to measure Qext

6. Qext data