HARMONIC STRENGTHS OF PEP DIPOLES AND SOME RELATED EFFECTS AND LESSONS

摘要

The primary goal of the magnetic measurements was then to determine the dipole strength as a function of current for each magnet based on a practical setting algorithm. The main constraints on the algorithm were reproducibility of the integrated field (∫By dz), speed, power and reduction of higher harmonics. Quadrupole and sextupole strengths were also measured on about one-half of the magnets at one current (I = 1250A/E = 17.43 GeV). This note presents the data and discusses it from the viewpoint of subsequent .measurements with stored beams.