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Summary of Meeting on Ramp Intensities and Drift Corrections - June 5-6, 2007

This document summarizes the discussions and results from the meetings held on June 5-6, 2007, focusing on ramp intensities and orbit drift corrections. Initial ramp intensity results showed efficiencies of 87% for Y and 94% for B at an intensity of 3.5 x 10^9 and 84% for Y and 86% for B at 4.7 x 10^9. Key topics included beam parameter comparisons, coupling measurements, and chromaticity settings, as well as the analysis of a detected instability during beam transitions. Team members contributed various adjustments and outlines for operational optimizations.

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Summary of Meeting on Ramp Intensities and Drift Corrections - June 5-6, 2007

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  1. APEX SummaryJune 5-6 Fulvia Pilat Time Meeting, June 12, 2007

  2. Abreu, Fischer, + team Ramps Initial intensity = 3.5 x 109 Ramp Efficiency: 87% Y and 94% B Initial intensity = 4 and 7 x 109 Ramp Efficiency: 84% Y and 86% B

  3. Marusic, Fischer, Ptitsyn Results June 5orbit drift correction

  4. Results June 5 – tunes and ramp Ramp transmission OK (Artus IPM on) Will try tomorrow tunes, orbits, chrom drift compensation + ramp IF OK  In operations

  5. Beam parameter comparison with the reference Coupling measurements: dQmin <0.002 Dispersion and beam loss measurements -> to be analyzed Optimal AGS field trim: 5.0Gs (Blue), 4.5Gs(Yellow) Ptitsyn + team

  6. Ramps with ~1.3e9/bunch, 103 bunches Different chromaticity settings Ptitsyn, Wei + team Blue chrom: -2 Yellow chrom: +2 Blue chrom: +2 Yellow chrom: -2

  7. The instability caught by Button BPM Sum signal Difference signal Yellow vertical Instability happened ~50ms after transition and continued for ~40ms

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