Recycler Pbar Transfer -Gattuso 1 Recycler weekly Summary This presentation will probably involve audience discussion, which will create action items. Use PowerPoint to keep track of these action items during your presentation In Slide Show, click on the right mouse button Select “Meeting Minder” Select the “Action Items” tab Type in action items as they come up Click OK to dismiss this box This will automatically create an Action Item slide at the end of your presentation with your points entered.

Recycler Pbar Transfer -Gattuso 2 Beam Lost  Third largest Stash lost (192 E10) It appears that QF buss in the Main Injector did not ramp down at high field invert. Differential quad bus currents of amps.  Machine parameter effected Closed orbit shifted by.5 mm in both plains Coupling changes in machine –Minimum Tune split changed by Magnetized E-Cool 90 and 180 bend magnets

Recycler Pbar Transfer -Gattuso 3 Record Stash Size  New Record of 437 E10  Problems encountered Tunes shift Stochastic Cooling –Transverse Vertical Cooling  Transfer eff Last transfer –ACC to RR 82% –Driven mainly by RR lifetime Normal Transfer Eff –ACC to MI 95% –MI to RR 93% –ACC to MI 90%

Recycler Pbar Transfer -Gattuso 4 First transfer Beam current RF cavity Gap monitor

Recycler Pbar Transfer -Gattuso 5 Damper power Vertical emittance jump Beam loss

Recycler Pbar Transfer -Gattuso 6 Shot 4645  Starting Intensity 417 E10  Emittance Longitudinal emittance 68 eVsecs –( eVsec per Parcel) Transverse 4-5pi  Pre instability Mining efficiency 96% Post(76%) Parcels 3-5 went unstable –Lost 78 E10 Would have extracted ~400e10 We did extract 316E10 (ties our best record) Gives us a very good insight to operations at the 550E10 level  Density Intensity/(long emitt* Trans emitt) 2.8 = 60 e10/((1.3 eVsecs*4)*4 pi) Normally 1.5-2

Recycler Pbar Transfer -Gattuso 7 Longitudinal Emittance

Recycler Pbar Transfer -Gattuso 8 Lifetime Benchmark