MBA Magnets MultiBend Achromat Magnets 9/27/2013 Review By Mark Jaski

9/2013 Avoid OAL less than.150 m Core length = (OAL-.058)m Quarupole integral field vs length (updated)

9/2013 Avoid OAL less than.150 m Core length = (OAL-.061)m Sextupole integral field vs length (updated)

9/2013 Central field as a function of OAL (VP) Mark Jaski Accelerator Systems Division Magnetic Devices Group 4 2D analysis is not effective unless the quadrupole is over 1 m long. 2D analysis is not effective unless the sextupole is over 3 m long. (Integrated field)/(effective length) = Peak field

9/2013 How close can two magnets get? Mark Jaski Accelerator Systems Division Magnetic Devices Group 5 0.2% quad d 213 mm OAL quad 186 mm OAL sext

9/2013 Add end shims to pole tips Mark Jaski Accelerator Systems Division Magnetic Devices Group 6

9/2013 Add end shims to pole tips Mark Jaski Accelerator Systems Division Magnetic Devices Group 7

9/2013 Add end shims to pole tips Mark Jaski Accelerator Systems Division Magnetic Devices Group 8

9/2013 Add end shims to pole tips Mark Jaski Accelerator Systems Division Magnetic Devices Group 9

9/2013 Add end shims to pole tips Mark Jaski Accelerator Systems Division Magnetic Devices Group 10

9/2013 Case 1: Quadrupole and Sextupole 40 mm apart Mark Jaski Accelerator Systems Division Magnetic Devices Group 11

9/2013 Case 2: Quadrupole and Sextupole 40 mm apart MAX IV style Mark Jaski Accelerator Systems Division Magnetic Devices Group 12

9/2013 Case 3: Quadrupole and Sextupole 40 mm apart MAX IV style with side cut Mark Jaski Accelerator Systems Division Magnetic Devices Group 13

9/2013 Case 4: Quadrupole and Sextupole 40 mm apart MAX IV style with half side cut Mark Jaski Accelerator Systems Division Magnetic Devices Group 14

9/2013 MAX IV multipoles Mark Jaski Accelerator Systems Division Magnetic Devices Group 15 Quadrupole 12 pole dipole sextupole 18 pole Skew dipole Skew sextupole Skew 12 pole Skew quad

9/2013 Much more work to do with the MAX IV style  Results here are preliminary  Results here were not intended to match the existing lattice. Results here are just to take an initial look at the MAX IV style of magnet assembly  Initial results appear there is no large issues.  A skew quad added to the sextupole will definitely produce a horizontal dipole when there is a side cut.  Need to add the correctors to the quadrupole and sextupole magnets  Future models –quad doublet –straight multiplet Mark Jaski Accelerator Systems Division Magnetic Devices Group 16

9/2013 Possible future R&D work  Is there any R&D work we feel necessary.  Looking for input from all  Provide the following by mid-October –scope/goal –any assumptions made –costs in terms of labor and M&S –justification for doing the work –what determines when the work is complete –major milestones –completion date Mark Jaski Accelerator Systems Division Magnetic Devices Group 17

9/2013 Ongoing tasks and assignments  Update the Working assumptions document (everyone) –Suk and Vladimir need to update parameters –Mark needs to add trims and update trim parameters for quad and sextupole magnets  Analysis –Longitudinal gradient dipole magnets (Vladimir) Confirm the operating current with power supplies (ask Ju Wang if your currents are Okay) –Transverse gradient dipole magnets (Suk) Look at possible combined function (quad/dipole) rather than a quadrupole magnet that requires transverse motion –Quadrupoles (Mark) Optimize pole tips Add trims Transient (ripple current) Size VP tips Side chamfers Tip chamfers (minimize 12 pole) Size the water cooling hole –Fast correctors (who) Mark Jaski Accelerator Systems Division Magnetic Devices Group 18

9/2013 Ongoing tasks and assignments (continued)  Analysis (continued) –Sextupoles (Mark) Add trims Size VP tips Side chamfers Tip chamfers –MAX IV type magnet mounting (is this the right way to go?) quad doublet (Mark) straight multiplet (Mark) FODO Section (who) –Check each others work  R&D project –Engineering, designer, purchasing  Costing (TJ and Elmie)  Scheduling  Documents –Engineering specification documents –Statement of work Mark Jaski Accelerator Systems Division Magnetic Devices Group 19

9/2013 Ongoing tasks and assignments (continued)  Drawing lattice layout for vacuum group and girder group –We need to supply box drawings of magnets to APS designers Mark Jaski Accelerator Systems Division Magnetic Devices Group 20