1. g2p/GEp Beamline Status Tim Michalski Project Lead

2. Overview Facilitate the design, procurement, and build of the beamline – up to the target chamber Experimental Plan Project Overview Project Status Project Challenges with risk mitigation

3. Experimental Plan Run # Beam EnergyBeam Current Target AngleTarget LocationSepta MagnetDumpTartget MaterialComments 12.2571 uAN/A87 cm upstreamN/A Hall A DumpN/AStraight Thru 22.25750-130 nA9087 cm upstreamg2pYes - 6 degLow Energy DumpNH3 32.25750-130 nA2087 cm upstreamGEpYes - 6 degLow Energy DumpNH3 42.257150 nA max9087 cm upstreamg2pYes - 6 degLow Energy DumpCarbon(?)Thru Target(?) - Optics 51.1571 uAN/A87 cm upstreamN/A Hall A DumpN/AStraight Thru 61.15750-130 nA9087 cm upstreamg2pYes - 6 degLow Energy DumpNH3 71.15750-130 nA2087 cm upstreamGEpYes - 6 degLow Energy DumpNH3 81.157150 nA max9087 cm upstreamg2pYes - 6 degLow Energy DumpCarbon(?)Thru Target(?) - Optics 91.7061 uAN/A87 cm upstreamN/A Hall A DumpN/AStraight Thru 101.70650-130 nA9087 cm upstreamg2pYes - 6 degLow Energy DumpNH3 111.70650-130 nA2087 cm upstreamGEpYes - 6 degLow Energy DumpNH3 121.706150 nA max9087 cm upstreamg2pYes - 6 degLow Energy DumpCarbon(?)Thru Target(?) - Optics 133.3551 uAN/A87 cm upstreamN/A Hall A DumpN/AStraight Thru 143.35550-130 nA9087 cm upstreamg2pYes - 6 degLow Energy DumpNH3 153.35550-130 nA2087 cm upstreamGEpYes - 6 degLow Energy DumpNH3 163.355150 nA max9087 cm upstreamg2pYes - 6 degLow Energy DumpCarbon(?)Thru Target(?) - Optics 173.35550-130 nA087 cm upstreamg2pYes - 6 degLow Energy DumpNH3 182.2571 uAN/AAt pivotN/A Hall A DumpN/AStraight Thru 192.25750-130 nA90At pivotg2pNo - 12.5 degLow Energy DumpNH3 202.257150 nA max90At pivotg2pNo - 12.5 degLow Energy DumpCarbon(?)Thru Target(?) - Optics 212.25750-130 nA90At pivotGEpNo - 12.5 degLow Energy DumpNH3 223.3551 uAN/AAt pivotN/A Hall A DumpN/AStraight Thru 233.35550-130 nA90At pivotg2pNo - 12.5 degLow Energy DumpNH3 243.355150 nA max90At pivotg2pNo - 12.5 degLow Energy DumpCarbon(?)Thru Target(?) - Optics 253.35550-130 nA90At pivotGEpNo - 12.5 degLow Energy DumpNH3 263.35550-130 nA0At pivotg2pNo - 12.5 degLow Energy DumpNH3 271.157***50-130 nA90At pivotNo – 12.5 degLow Energy DumpN/AOptics Transform *** - FZ1 and FZ2 in position for 2.2 GeV run, but with half field strength on FZs and Target magnets

4. Project Overview Design, procurement, component calibration and testing –Now through May, 2011 –Some components arrive after May Access to Hall A for installation –May 16, 2011 Installation completion – start of Physics –November 19, 2011

5. Project Status Regions 1 and 2 designs complete and material ordered Region 3 design complete – final review and procurement in coming weeks Calorimeter controller repaired and SW upgrades nearly complete I&C electronics designed and being built Addition of SR PS chamber, w/ cooling Resource planning integrated into 6MSD schedule Several changes to the run plan being evaluated

6. Project Challenges Instrumentation for Low Current data –BPMs and BCMs –Mitigation BPM – short M15 style, new electronics, tested BCM – new receiver FZ Magnet PS requirements evolving –Need up to 4 kG, requiring 231A for FZ1 –Need up to 8 kG, requiring 465A for FZ2 –Mitigation – assessed capabilities of magnet power supplies in Hall C – meet requirements – assembling spares

7. Project Challenges Acquisition of equipment from various sources –FZ magnets, corrector magnets, slow raster, new BPMs, power supplies, controllers –Mitigation – get control as soon as possible, test and calibrate early (before installation) Resurrection of Tungsten Calorimeter –Reposition in beamline, re-establish functionality, recalibrate –Mitigation – Controller extracted from Hall A, repaired, new PC104 SW nearly complete

8. Project Challenges Slow Raster issues raised at last collaboration meeting – waveform generators and “hole” in raster pattern –Mitigation – New function generator – Testing in Progress Installation at the same time as 12 GeV upgrades during 6 month down –Mitigation – tied to detailed 6MSD planning – all resources identified in schedules – have ~3 weeks float

9. Project Challenges Proposed changes to run definition – a) target height when upstream, b) 1.157 GeV run when target at pivot –Mitigation – Run new orbits on optics, address changes in FZ2 magnet position and articulating arm – defined impact to work and calendar time Maintain strong communication – highlight issues early!

10. Beam Line Installation Schedule