Dipoles for LBNE Primary Proton Beam Line David Harding 11 November 2009 Outline Scope Choices Issues Next step Why you should care ~$10,000,000 vs. ~$1,500,000 for dipoles Echoes through cost of other systems Some plus Some minus Technical issues Scope Working with V-10 of beam line from Peter Lucas dating from the middle of September No significant changes expected in dipoles Seven dipole circuits MagnetLengthCountCurrents m21 EPB dipole3 m42 6-m dipole6 m434 s EPB Dipoles 6-m Dipoles main bend 6-m Dipole special match 6-m Dipoles main bend 6-m Dipoles bend down 6-m Dipoles bend up Choices Old Main Ring dipoles B2 Refurbish Rebuild Main Injector dipoles IDA/IDB Build to original design Modify original design B2 Dipoles IDA/IDB Dipoles B2 Work Refurbish Inspect Flush Change ceramics Touch up Modify Rebuild Burn epoxy Clean up Reinsulate coils Reassemble Thorough testing IDA/IDB Work Main Injector model Buy steel Buy laminations Buy cores Buy coils Assemble in house Issues B2 RefurbishedIDA/IDB New Magnet costLowHigh Power costHigherLower VoltageHigherLower Heating/coolingMarginalCool Bus work, localMoreLess Bus work, feedLighterHeavier InstallationLighterHeavier ReliabilityMarginalExcellent Next Steps Issues list in LBNE DocDB Magnet cost estimate nearly complete Power supply estimates nearly complete Need data on impact for other systems Consider modification to IDA/IDB coils Choose