Development Of A 12 GHz Dielectric-Based Wakefield Power Extractor For Potential Clic Applications
The Compact Linear Collider (CLIC) Power Extraction and Transfer Structure (PETS) is one of the key components in the CLIC two-beam acceleration scheme. According to the 2008 CLIC design parameters , 71568 PETS units total are needed for this 3 TeV machine, contributing a large portion of the overall cost. A low cost wakefield power extractor with the same parameters as PETS will be attractive. We propose a research program to study the possibility to replace the current metal based PETS with its dielectric counterpart, which will significantly reduce the cost if it successes. A quartz based PETS testing structures will be built, instrumented, and cold tested preparatory to high power measurements in the project. Under Phase I of the project, we have finished the design, modeling, and fabrication of a 11.424 GHz dielectric based RF power extractor, which is a scaled version of 12 GHz extractor in order to perform the high power rf test first using SLAC 11.424 GHz high power rf source before moving toward a real beam test of the 12 GHz version. We plan to first perform a high power rf test of the 11.424GHz version structure at SLAC using 11.424GHz high power rf source. Then, based on the results of the first test, we will design, fabricate, and beam test a 12GHz dielectric-based power extractor for CLIC application. Commercial Applications and Other Benefits: The power extractors developed in the project may lead to a good alternative to PETS, a key component for the CLIC machine. Besides applications for high energy physics, the high power rf source can find a variety of applications in the microwave industry, communications, and radar systems.
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