1. SBS Magnet John J. LeRose

2. Assembly drawing of 48D48 magnet as used at BNL (vertical field)

3. 53 different configurations from start to finish

6. SBS_D33

7. SBS_D73_40

8. SBS_D87_53_61&30

9. α x’ y’ SBS_D33

10. SBS_D87_53_61&30 Bends 10 GeV/c beam 9.95x10 -5 Radians → 5 mm 50 m downstream SBS_D73_40 Bends 10 GeV/c beam 1.9x10 -4 Radians → 9 mm 50 m downstream → 45 mm 50 m downstream

12. SBS_D33SBS_D73_40SBS_D87_53_61&30

13. 48D48 Required Modifications Horizontal field (tip it on its side) Beam path through the yoke → Coil Modifications, i.e. New Coil(s)! Field Clamp → Bucking coil(s) (reduce field on the beam line)

14. costs (SBS_D_87_53_61&30) comments Disassembly and reassembly$40kMechanical work/rigging/power/water New Coils$70ktwo with bigger "ear" at entrance Field clamps$50kfour big machined pieces of iron Beam path hole$25kBoring through the existing yoke piece Pole tip shims$30ktwo machined pieces of iron Bucking coil 1$20k~60 cm long around the bore hole Bucking coil 2$20k8-10 cm between yoke and clamp contingency (25%)$64k Total$319k All just WAG’s !