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Tevatron Coordinator: Store Summary, Problems, and Pending Studies

This summary provides an overview of the Tevatron Coordinator's work completed, problems encountered, and pending studies. Includes details on engine overhauls, flywheel replacements, and tune changes.

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Tevatron Coordinator: Store Summary, Problems, and Pending Studies

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  1. The sun'll come outTomorrow So ya gotta hang on 'Til tomorrow Come what may Tomorrow! Tomorrow!I love ya Tomorrow! You're alwaysA dayA way! Tevatron Coordinator

  2. Tevatron Coordinator

  3. Tevatron Coordinator

  4. Tevatron Coordinator

  5. Store Summary Tevatron Coordinator

  6. Store Summary Tevatron Coordinator

  7. Studies/Work completed • After losing 6167: • F3 wet engine overhaul. • A3 flywheel replacement. • Smoothing and tune changes at LBSEQ=14,15,16 • 6174: 1st cog moved to before final protons. Tevatron Coordinator

  8. Problems • 6154 aborted from bad D2 SFU. • After replacement of SFU, TECAR error on phase slip monitor on page T26. • C4 cold compressor work. • SF hops trans regulator replaced. • 6159: TRF2 tripped off. • 6161 quenched on large pbars from recycler/MI. • On recovery quenched again because QBS ramp started with the lower energy lead flows OFF (timed out). • 6165: TRF7 tripped off. • 6166: During shot setup, B48 vert separator polarity switch failed to switch polarity. Poor coalescing from MI. • Orbits got poor in 6166 because of quad motion from temperature changes. Tevatron Coordinator

  9. Problems • 6167 quenched during squeeze LBSEQ=13,14. • Reason: Possibly too much protons exacerbating bad tunes through squeeze at LBSEQ=14, 15, 16. • After store 6167 quenched: • F3 wet engine overhaul. • A3 flywheel replaced. • 6176 high losses at HEP. Pbar emittance very small, proton tunes landed a little higher than usual. Tevatron Coordinator

  10. Orbit Motion on Memorial Day VA47 and VB11 made sudden change in store 6166 B1 column temp. also made a big jump. Tevatron Coordinator

  11. Tunes at LBSEQ=14,15,16 Removed .003 in both Qh and Qv This had been deliberately put in to compensate beam-beam tune shift. Tevatron Coordinator

  12. Pending Studies • Chromaticity tracker (proton only). Tan • Differential orbits (proton only). Sasha • P1 line matching (proton only). Sasha, Annala • Replacing new BLMs in all houses. Tevatron Coordinator

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