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New X-ray imaging for ITER-supporting tokamaks
As researchers continue to seek ways to better understand the plasma inside fusion machines to fully harness fusion energy, Princeton Plasma Physics Laboratory is leading a project to provide new X-ray imaging systems to two international tokamak projects: WEST, in southern France, and JT-60SA, in Japan—both of which are designed to support the development of ITER.
Robert J. Borland
Nuclear Science and Engineering | Volume 121 | Number 1 | September 1995 | Pages 162-171
Technical Paper | doi.org/10.13182/NSE95-A24138
Articles are hosted by Taylor and Francis Online.
For most pressurized water reactors, moderator temperature coefficients (MTCs) must be measured at end-of-cycle conditions at power to verify that Technical Specification limits on negative MTC will not be violated. Three techniques for performing these measurements are evaluated, and the relative strengths and weaknesses of each method are discussed. Considering overall accuracy and time required to perform the test, a best method is selected, and its accuracy is compared with previous measurements performed at Davis-Besse Unit 1, thus demonstrating the effectiveness of this technique. In addition, the necessity of attempting to perform this measurement at power at end-of-life conditions is discussed.