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CesrTA Experimental Schedule and Priorities
Mark Palmer June 26, 2009
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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
![August Run [D] = down day [L] = ≤ shift [M] = few shifts](http://slideplayer.com./slide/15546833/93/images/2/August+Run+%5BD%5D+%3D+down+day+%5BL%5D+%3D+%E2%89%A4+shift+%5BM%5D+%3D+few+shifts.jpg "[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, CTA09.")
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Future Upcoming Runs Long Lead Items Nov 17 – Dec 23, 2009
Dates essentially fixed March July 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
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