1. Operation Notes APEX Status Fulvia Pilat Machine Experiments Meeting January 20, 2009

2. MCR’ s top 10 wish list (from Greg Marr presentation at the Retreat 2008) Straightforward polarimetry identify responsible person for polarimeter operations identify list of operations and expert activities and measurements RHIC Injection without idiosyncrasies improvements BPMs A Ramp Manager/model that won’t foil tape, Lisa, OrbitDisplay, RampEditor… 2 task forces on Ramp software during the shutdown PASS that works faster PASS with less failure ACS group manpower increased over the shutdown, AGS/Booster upgrade planned Our fingers on the keyboard A fully revertible machine Lab-view applications that run and dump themselves One answer from one source A list of exceptions smaller than the list of rules

3. Retreat 08 – feedback from experiments  Communication propose automatic notification from MCR of polarization measurement (phone calls not reliable).  Results of Vernier scans Analyzed and delivered timely to machine and experiments  No change of operations planning, configuration, especially before weekends make optimal use of Monday scheduling meeting  Effective use of 9 o’clock meeting (and meetings in general) Communicate with experiments upfront, before system reports (Run coordinator) Make sure people from experiments are up-to-date on issues Control of backgrounds needs to improve Auto-orbit corrections every ½ hr affect backgrounds  needs to be accompanied by auto collimator adjustments that follow orbit movement at collimators

4. APEX Run-8: studies with d-Au 08-360AIBS with decoupling  transverse stochastic cooling 08-170ATest of ramp and operations with beta*< 0.8m + beta* measurements – 2 techniques + test of IP knobs  30+% luminosity 06-310A ORM Measurements  beta beat correction (only partial) 07-330A Tune and chromatic drift correction at injection  in operations 08-140A Collimation on the ramp  ~operational 08-270A AC dipole optics measurements, corrections 08-290A Polarimeter profiles  emittance at injection, store 08-340A Beta beat measurement  corrections at injection, store 08-170A Injection drift correction  operational now 08-060A Nonlinear chromaticity measurements 08-011A Electron cloud location  performance limits 08-181A Stability threshold at transition  performance limits 08-071B Energy Loss of Debunched Beam  fundamental measurement 08-021B Au31+ in AGS  operations RHIC low energy, GSI 08-241B Gold-77 in RHIC  cooling (to be confirmed)

5. APEX Run-8: studies with P-P 08-170ABeta*=0.6m  operations this run (luminosity) 08-420ANear integer WP  not operational (without orbit control) 08-130ACollimation efficiency  collimation system upgrade 08-450APolarimeter studies  improvements needed for high bunch intensity 08-060AChromaticity measurement, feedback  Hybrid Tune Tracker 08-040AImpedance localization data  possible impedance reduction 07-030ACoherent spin precession  design of RHIC spin flippers 08-160ARF phasing  non operational for PP due to beam loading 08-410A Longitudinal Vernier scan  operations optimization

6. APEX Run-8: what did not get done… only bigger “ticket items” d-Au:  Convincing linear optics corrections (many attempts and progress but nothing operational yet….)  (further) development of IBS lattice P-P:  Spin experiments, in general  Long-range beam beam study (wires)  Demonstration of chromaticity feedback  Optics for PP-2-PP

7. APEX Workshop December 4-5 2008

8. APEX Workshop

9. Plans for Run-9 Program limited to P-P experiments 250 GeV5 weeks of physics 100 GeV~9 weeks of physics Deadline proposals: January 15  January 30 Asked to update status of Run-7 and 8 proposals Meeting AEAC: 1 st week in February Weekly APEX Friday Meetings resume January 23 Collection of APEX Results