CesrTA Experimental Schedule and Priorities Mark Palmer June 26, 2009

August Run [D] = down day [L] = ≤ shift [M] = few shifts [H] = several shifts August Run Machine Start : July 23rd CesrTA Run: July 30-Sept 8 (~62 Exp Shifts, 16 down) EC Build-Up and Mitigation Mitigation Studies including characterization of the beam processing [M] Grooved chamber in dipole (SLAC) – Al with TiN coating Grooved chamber in wiggler (CU-KEK-LBNL-SLAC) – bare Cu surface initially a-C chamber (drift region in arc) New chambers to help characterize general EC Build-up in CESR [M] Al chamber (drift region in arc) Al chamber in Quadrupole Chicane measurements [H] SEY system commissioning [D] Instrumentation BPM system commissioning and switchover [H,D] Positron xBSM measurements [H] Tuning tools Multi-bunch measurements (14ns) 5 GeV chip test 4ns readout checks Electron xBSM line and detector commissioning [H] Vis. Light BSM commissioning [M] Schottky spectrum? Feedback system (4ns) configuration for experiments [L] Optics and LET Tuning and correction with new instrumentation (significant commissioning time) [H] Sextupole distribution and tune footprint issues (for EC measurement flexibility) [L] Test new correction techniques [M] Knob development [L] IBS studies and lifetime measurements [M] Characterization of remaining machine errors and problems that impact vertical emittance reach [L] EC Dynamics Coherent Tune Shift Measurements [M] Witness bunch and bunch-by-bunch (14ns) size measurements [M] Head-tail instabilities Incoherent emittance growth Utilize ring-wide bunch-by-bunch BPM system to characterize local cloud density [L] Bunch-by-bunch phases Instability modes and thresholds Significant commissioning and some limitations as instrumentation is still in transition [H] Feedback system BPM BSM Injection Tune-up June 25, 2009 CTA09

Future Upcoming Runs Long Lead Items Nov 17 – Dec 23, 2009 Dates essentially fixed March 2010 - July 2010 - Long Lead Items Wiggler chamber with electrode NEG mitigation experiment design Follow-on tests with coatings added Grooved wiggler chamber Q15 Al chamber Instrumentation Tools Planning Experiments Simulating Experiments in Advance June 25, 2009 CTA09