It is generally accepted that under most models of the early universe evolution, highfrequency gravitational waves (HFGWs) were produced. They are referred to as "relic" highfrequency gravitational waves or HFRGWs and their detection and measurement could provide important information on the origin and development of our Universe - information that could not otherwise be obtained. So far three instruments have been built to detect and measure HFRGWs, but so far none of them has achieved the required sensitivity. This paper concerns another detector, originally proposed by Baker in 2000 and patented, which is based upon a recently discovered physical effect (the Li effect); this detector has accordingly been named the "Li-Baker detector." The detector has been a joint development effort by the P. R. China and the United States HFGW research teams. A rigorous examination of the detector's performance is important in the ongoing debate over the value of attempting to construct a Li-Baker detector and, in particular, an accurate prediction of its sensitivity will decide whether the Li-Baker detector will be capable of detecting and measuring HFRGWs. Its sensitivity and noise sources as well as other operational concerns are discussed here. The potential for useful HFRGW measurement is theoretically confirmed.
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