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Response of superconducting cavities to high peak power.
| Content Provider | CiteSeerX |
|---|---|
| Abstract | A technique to find the transient cavity Q from transmitted power is presented. This technique can facilitate finding the Q as a function of accelerating electric field for low power pulsed measurements, but it has a special application to analyze the thermal breakdown behavior during high peak power pulsing. With high power, in short time scales, the fields in a superconducting cavity can be driven well past the CW breakdown limit. With knowledge of the Q during breakdown, one can show that a large fraction of the surface was still superconducting as the cavity reached high fields. A lower bound to the critical RF magnetic field can then be determined. Results of pulsing a 1.3 GHzNb cavity with 340 kW for 150s are presented. The Q extraction technique is used to measure a lower limit of H RF c over the range of2Kto8.3Kdespite the presence of a thermal defect. I. INTRODUCTION As we continue to push the achievable accelerating gradients in Nb cavities, the critical RF magnetic fiel... |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | High Peak Power Short Time Scale Range Of2kto8 Critical Rf Magnetic Fiel Cw Breakdown Limit Thermal Defect High Power Large Fraction Thermal Breakdown Behavior High Field Low Power Achievable Accelerating Gradient Transmitted Power Transient Cavity High Peak Power Pulsing Special Application Critical Rf Magnetic Field Superconducting Cavity Ghznb Cavity Extraction Technique Nb Cavity Electric Field |
| Content Type | Text |
