1. Progress on Vertical Coils David Howell, UIUC Jen-Chieh Peng, UIUC Jian-Ping Chen, JLab

2. Overview Size and placement Weight and field strength Uniformity Report from Walker Scientific

3. Size and Placement Avoid disassembling present arrangement Diagram from Walker Scientific proposal drawing number 52-C822528

4. Size and Placement Uniformity region size: ~40 cm transverse to symmetry axis 40 cm (15 ¾ in.)

5. Weight and Field Strength X coils*Y coils*Z coils Inner Diameter (in)6355.572 Outer Diameter (in)6860.577.625 Number of turns305273355 Weight / coil530 lbs420 lbs700 lbs Resistance / coil 1.51 1.53 2.2 Central Field37 G37.2 G37 G Operating Current11.21 A11.17 A11.0 A * From Walker Scientific proposal drawing number 52-C822528, with 5 gauge copper wire Inferred by assuming value of B z at center follows:

6. Uniformity Axial components of magnetic field, on axis

7. Walker Scientific Have been in contact with Ed Daniels at Walker Scientific Waiting to get a quote