Manufacturing methods and technology measure arc plasma sprayed phase shifter elements

The APS experiments have demonstrated that phase shifter samples can be obtained with properties which are substantially the same as those obtained at ECOM laboratories and within reach of the contract goals. In the preliminary runs, the functioning of the support equipment for the spraying operation (the furnace controls, the dielectric holder assembly and vertical was given motion equipment) had been unsatisfactory, and primary attention was given to these problems. A new furnace with a front opening door has been constructed, and controllers have been delivered. A modification of the sample holder used at ECOM has been built and is undergoing tests. Changes were made in the vertical motion equipment. A velocity sensor has also been installed and tested.