Institute Science and Technology of Accelerating Systems

Horizontal Bi-Cavity Testing (HoBiCaT) for tests of dressed cavities

The HoBiCaT facility is designed for tests of “fully-dressed” SRF cavities in CW mode. Cavities in HoBiCaT can be equipped with all components that are needed for subsequent operation in an SRF module (e.g., HOM loads, tuner, high-power input coupler, magnetic shield etc).  Thus final acceptance testing prior to module integration can take place in HoBiCaT. Heat intercept stations are available at 4.2 K and 80 K.

Capabilities

• Horizontal testing of up to two fully dressed TESLA type cavities simultaneously

• Ambient magnetic field ca. <5 µT

• Operating temperature: 1.8 K - 4.2 K

• Usable frequency: 400 MHz - 3100 MHz

• Usable diameter: 1 m

• Usable length: Two TESLA cavities back-to-back

• Cooling capacity: 80 W @ 1.8 K

• Cold bead pull for multi-cell cavity field profile measurements in the superconducting state.

• Radiation protection up to 5 Sv/h

Further reading:

O. Kugeler et al, "Adapting TESLA technology for future cw light sources using HoBiCaT", Rev. Sci. Inst., 81, 074701 (2010)