PEP main ring magnet system

The PEP main ring magnet system consists of 192 bending magnets, 216 quadrupoles, 206 sextupoles and numerous other correction elements. The main ring bend magnets are laminated ''C'' frame dipoles having a very uniform flat field meeting a new criterion of symmetry called the residual asymmetry factor (RAF less than or equal to 10-5). The main ring quadrupoles consist of 216 laminated magnets of three differing lengths having a bore of 100 mm diam. The multipole content of these magnets as measured is less than or equal to 10-3. The present status of both magnets is that production has begun and completion is scheduled for early 1979