Transient high-field behavior of niobium superconducting cavities
Abstract
The breakdown behavior of a TM010 mode, S-band niobium cavity at low temperatures was examined. Unloaded Q's of 9 x 10(7) at 4.2 K and of 7 x 10(9) at 1.35 K were measured. The response of the cavity at 4.2 K to 1 MW, 2.5 (SIGMA)s pulses was tested in several cool downs. In these tests the cavity was heavily overcoupled to lower its time constant to a value of 0.80 times the RF pulse length of 2.5 (SIGMA)s. This condition maximizes the energy transfer from the klystron source to the cavity. It is indicated that fields of about 50 MV/m are reached in the cavity without breakdown.
- Publication:
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Presented at the Particle Accelerator Conf
- Pub Date:
- March 1983
- Bibcode:
- 1983paac.confS..21C
- Keywords:
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- Cavity Resonators;
- Cryogenic Temperature;
- Niobium;
- Superconducting Power Transmission;
- Low Temperature Physics;
- Performance Tests;
- Resonant Frequencies;
- Communications and Radar