Fusion Futures: Development of a Gyrotron Cavity Test Rig

Description

The objective of this work package is to develop a test rig design for testing prototype gyrotron cavities simulating the: • Internal thermal load and associated cooling efficiency • Pressure forces • Vacuum compatibility The test rig would include a thermal head that is inserted into prototype cavities to mimic the induced ohmic loads from the cavity electric field profile. The head could be designed for a specific gyrotron cavity, but the concept adaptable to cavities with diameters in the range of 30 to 50mm, and cavity length 20 to 30mm. Ideally, the thermal profile would be close to consistent with the E-field’s power deposition profile and capable of power densities exceeding 30MW/m2. Lot 1: The objective of this work package is to develop a test rig design for testing prototype gyrotron cavities simulating the: • Internal thermal load and associated cooling efficiency • Pressure forces • Vacuum compatibility The test rig would include a thermal head that is inserted into prototype cavities to mimic the induced ohmic loads from the cavity electric field profile. The head could be designed for a specific gyrotron cavity, but the concept adaptable to cavities with diameters in the range of 30 to 50mm, and cavity length 20 to 30mm. Ideally, the thermal profile would be close to consistent with the E-field’s power deposition profile and capable of power densities exceeding 30MW/m2. The test rig should include simplified interfaces for easy replacement of the cavity, while ensuring safe testing conditions. The estimated budget for this is between £80,000 and £100,000. This piece of work is required to be completed by March 2025, it is anticipated that this contract will be 8 months long.