December 18, Topics & Presenters: Magnet Overview J. Haggerty Magnet Testing in bldg 912 M. Anerella Modification to ChimneyP. Kovach Cryogenics & Power Supply Plans at 1008P. Orfin, Ioannis Marneris Magnet Installation at 1008D. Lynch Flux eturn, Magnetic Forces, Testing OptionsE. O’Brien SC Magnet Technical & Management

December 18, Preliminary closeout comments by the reviewers were generally favorable but some key observations were made: 1.We should continue planning the 100A test, but A 1000A test or full field test option (at 912) should be studied 2.Proposed chimney design is satisfactory 3.Stay clear areas for the chimney and magnet have been identified. 4.The calorimeter is acceptable as a flux return. Calculations for asymmetrical forces are proposed but not yet performed. We need to perform them. 5.We need to identify a management team for the SC-magnet to see it through to the startup of sPHENIX. 6.We need to continue to define the installation and testing of the magnet in A full field test should be performed as soon as practical Reviewer Feedback

December 18, Other Magnet news: We have selected a new shipping vendor and expect to ship the week of January 12, 2015 to arrive at BNL ~ end of January.

Magnet Envelope Dimensions December 18, Magnet Outline/Envelope drawing has been revised: Note that closer inspection of drawings indicate that the IR/OR of the cryostat is 142 cm/177 cm not 140/173 cm as has been stated in previous specs.

December 18, Magnet Alignment We need to establish criteria for positioning the magnetic field with respect to the nominal IP and RHIC beam path. In order to accomplish this we need to establish fiducial references on the cryostat (or locate fiducials already established) which we can then relate to the magnetic field center and axis from magnet mapping. The following criteria are proposed: 6 fiducial points on the magnet, 3 on each end of the cryostat cylinder approximately 120 deg apart. Each fiducial should be used by survey and locatable by survey to.05 mm (.002”) true position. Using these points survey to define the nominal axial center of the cryostat at both ends of the cryostat and the nominal position of a point at the vertical top of the cryostat on the stack end of the cryostat. During low power tests we should take magnetic measurements to determine the axis and center of the magnetic field and determine its relationship to the axis and center of the cryostat, from the 6 fiducials. During installation of the magnet into the Outer HCal, mounting provisions and/or alignment provisions for the magnet should provide for the magnet field axis and the magnet field center to be aligned to the Outer HCal nominal centerline and center to within.5 mm (.020”) The HCal design shall also provide fiducials capable of locating the nominal centerline, centerpoint and vertical reference to within to.05 mm (.002”) true position, and mounting/ alignment provisions to the Central Pedestal base to within.5 mm (.020”).