1. SBS Magnet and Infrastructure Status Robin Wines July 2015

2. SBS 11/4/20142 Scattering Chamber & Vacuum Snout In Storage Front Field Clamp In Procure Corrector Magnets In Procure 48D48 Magnet In Storage Counterweight Support Structure In Storage Exit Beam Pipe Drawing Rear Field Clamp Drawings in Check

3. SBS Magnet and Supports Magnet tests at 200A completed Modifications to allow beam-right configurations completed Yoke parts and racetrack coils in storage New Saddle Coil to arrive at Jlab in August 2015 Magnet Manifold parts to be ordered by September 2015 Counterweight Blocks and Support Weldment in storage Floor Plates designed and to be ordered by September 2015 Parts for lift and motion of support/magnet are 75% defined, some ordered by September 2015 Counterweight Weldment

4. Field Clamps Front Clamp Rear Clamp Front Clamp – in procurement, fabrication from existing Jlab plates, 4 pieces bolted together Rear Clamp – drawings being checked, fabrication from BNL provided plate, assemble in 2 pieces Field Clamp Supports – reusing BNL stand-off cylinders, need additional supports from top and side, drawings being checked

5. Pole Shims Pole shims are required in GEp configurations to increase field integral Design of shims is complete Delivery scheduled for November 2015 Installation device required to insert into Magnet gap Design of device is complete. To be procured in FY16

6. Shielded Beampipe Configurations of shielded beampipe have beam determined and analyzed. In process of drawing parts to have procurement awarded by September 2015 Configurations determined for all angles of each experiment Assembly mechanism determined, support mechanism being designed Tapered welded vacuum pipe flange connections 18 inner tapered half sections of magnetic shielding 68 outer tapered half rings of magnetic shielding

7. Corrector Magnets UpstreamDownstream Completed optimization of Correctors in Tosca for all angles of each experiment to minimize beamline field Corrector magnets are in procurement. Conductor has been purchased to provide to vendor in August 2015 Each corrector utilizes two power supplies to allow variation in current settings in coil as needed. Will use existing power supplies, received from Accelerator.

8. Beamline optimizing GEP12 Beamline Integral too big Main Integral 2 3 1 2.44E06 G-cm Angle Integral 0 174 G-cm 0.5 1222G-cm -0.5 1582G-cm In regions 2 & 3 Integral required to be < 3000G-cm to keep beam on track to dump Angle Integral 0 611G-cm 0.5 2355G-cm -0.5 999G-cm 1 2 3 2

9. Beamline optimizing GEN10 1 2 3 Main Integral 1.68E06 G-cm Region 2 Angle Integral 0 617G-cm 0.5 1091G-cm -0.5 312G-cm Region 3 Angle Integral 0 702G-cm 0.5 2857G-cm -0.5 2462G-cm

10. Beamline optimizing GMN12 1 2 3 Main Integral 1.71E06 G-cm Region 2 Angle Integral 0 741G-cm 0.5 1260G-cm -0.5 3038G-cm Region 3 Angle Integral 0 604G-cm 0.5 1830G-cm -0.5 583G-cm

11. Items to complete Rear field clamp in procurement by September Shielded beampipe drawings done and in procurement by September Floor plates and counterweight support hardware ordered by September Field clamp supports in procurement by September Windows ordered and tested by November Water manifold parts ordered by September Beamline supports designed and procured by January Detector frames and supports designed and procured by January Sieve plate and pulley designed, ready for procurement Electronics Hut layout complete, designed by November