1. Special Report NuMI Target Updates Special Report NuMI Target Updates Ongoing Work - Four Parallel Activities, Now Three I.Target Hall NT-05 has been secured in NuMI Target Hall Morgue Target module ready to accept new target II.Autopsy of NT-05 in Target Hall Workcell Done- All work on this task complete III.Reclaim NT-02 as a contingency spare Good News: Pressure test results indicate NT-02 is still leak tight on the water and canister He volume circuit Bad News: Z-drive motion is likely compromised in perhaps a couple of locations ALARA plan in process to address slipping couplers and new bearings blocks May require ~2 weeks of effort to reclaim z-drive motion (if possible) IV.NT-06 Retrofit (Activities currently on the critical path) Target core successfully extracted from support casing Old DS water turnaround successfully removed using wire EDM in WHMS New water turnaround design successfully fabricated, welded, X-ray inspected, and pressure tested to 2400 psig Turnaround will be welded to NT-06 core and X-ray inspected Tuesday 3/22 All other target canister final assembly, survey, and QA expected to be complete by Saturday 3/26 Kris Anderson 21-Mar-2011 Kris Anderson 21-Mar-2011

2. Special Report NuMI Target Updates Special Report NuMI Target Updates NuMI Low Energy Target General Assembly Layout Downstream Water Turnaround Weldments Previously Identified Potential Failure Location Previously Identified Potential Failure Location

3. NT-06 Target Core in Processing Fixture Special Report NuMI Target Updates Special Report NuMI Target Updates NT-06 Retrofit

4. Original NT- 06 Downstream Water Circuit Welds patched with solder Special Report NuMI Target Updates Special Report NuMI Target Updates NT-06 Retrofit

5. Original NT- 06 Downstream Water Circuit Turnaround end not welded perpendicular to core centerline Special Report NuMI Target Updates Special Report NuMI Target Updates NT-06 Retrofit

6. Surgery Time Wire EDM operation to remove original water turnaround Successful cut Special Report NuMI Target Updates Special Report NuMI Target Updates NT-06 Retrofit

7. New Style Water Turnaround Successful X- ray inspection Successful pressure test to 1500 psig Special Report NuMI Target Updates Special Report NuMI Target Updates NT-06 Retrofit

8. NT-06 Cooling tube transition sleeves cleaned and ready for retrofit Special Report NuMI Target Updates Special Report NuMI Target Updates NT-06 Retrofit

9. NT-06 Retrofit ready for welding and X-ray inspection Tuesday 3/22 Special Report NuMI Target Updates Special Report NuMI Target Updates NT-06 Retrofit

10. Special Report NuMI Target Updates Special Report NuMI Target Updates Estimated Key Dates-Nominal Scenario I. NT-06 Path NT-06 retrofit should be completion 3/26 Efforts for NT-06 Target/Baffle Carrier final outfitting at MI-8, survey, and Q/A expected to occur 3/28 – 4/2 Installation of NT-06 into target chase during 4/4 – 4/9 Estimate for beam ~12:00 on Sunday 4/10 II. NT-02 Path (Contingency Target) NT-02 is leak tight but status of z-drive reclamation is still TBD Likely to take about 1.5 -2 weeks of effort to define and implement procedure to assess and return z-drive mechanism to operational status; Estimate z-drive recovery end of March if repairable Key Dates