The Lattice Design and Tolerance Analysis of the CBA Transport Line

The beam transport line from the AGS to CBA is 600 m long and consists of 70 bending magnets and 20 quadrupoles, as well as several special injection components. The beam has to bend 117 horizontally and drop 1.8 m in elevation. To insure that it has momentum acceptance of ¿P/P = ±1% and the transverse emittance dilution is within 30%, a detailed tolerance analysis has been carried out on the requirements of the AGS beam properties, magnetic field quality oL the transport magnets, and misalignment errors. Field quality tolerances of ¿Bo/B < 1 × 10-3 for bending field, ¿G/G < 5 × 10-3 for gradient field and ¿B2/B < 2.5 × 10-4 cm-2 of the sextupole components in the bending magnets are indicated.