Statistical factors to qualify the superconducting magnets for the SSC based on warm/cold correlations

All of the SSC production magnets will be measured at room temperature (warm), but only a fraction of these will be measured at liquid helium temperature (cold). The fractional information will then be analyzed to determine warm acceptance criteria for the field quality of the SSC magnets. Regarding predictors of the field quality based on partial information, there are several observations and studies based on the warm/cold correlation. A different facet of the acceptance test is production control, which interprets the warm/cold correlation to adjust the process parameters. For these applications, the authors are evaluating systematic errors and random errors, and their respective confidence intervals. The statistical techniques relying on asymptotic estimators of the estimators are useful to qualify the population magnets based on a subset of sample magnets. They present the status of their work, including (i) a recapitulation of analytic formulas, (ii) a justification based on HERA magnet experience, and (iii) a practical interpretation of these estimators