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Thursday Schedule: MD, Aperture Measurements, Access, and Physics Fill Planning

On Thursday, November 29, a series of operations are scheduled including a pilot ramp from 04:00 to 07:00 featuring nominal bunches and collision tests. Following this, an IR8 aperture measurement will take place from 07:00 to 09:00. Access restrictions and required contacts for various tasks are outlined, including ALICE and ATLAS operations. Pre-cycle preparations will occur from 13:00 to 14:00, ensuring CMS readiness for a physics fill starting at 14:00, which includes bunch length reduction. A high brightness beam physics fill is planned for the following day.

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Thursday Schedule: MD, Aperture Measurements, Access, and Physics Fill Planning

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  1. Thursday 29.11. after the MD • 04:00–07:00 Pilot ramp (3 on 3 nominal bunches with collisions in point 1/2/5/8) + asynch. dump test in collision • 07:00-09:00: IR8 aperture measurement (M. Giovannozzi et al.)

  2. Planning • 10:00 – 13:00 Access: • ALICE network switch (US25) – Impact 22030 (16+0696) • 60 A PC RCBV27.L5B1 and RCBH26.R3B2L(RP required), sub-converters of RQD.A12, RQD.A23, RQF.A23. Contact V. Montabonnet • RB.A67 QPS_OK (communication problem MB.C13L7) • Sublimation MKI2/8 (UA) – Vac. Piquet • BLM (point 7 – PM76 - RP required) (contact: E. Effinger) • ATLAS (field off), CMS • BGI (point 4) – RP required (contact: M. Sapinski) • TED TI2? – RP required (contact – to be checked with SPS team) • BLM optical link – Point 4 (tbc) – RP required – Contact E. Effinger

  3. Planning cont. • 13:00-14:00 Pre-cycle • CMS should be ready for physics at 14:00 • 14:00 – 17:00 Bunch length reduction and heating (B. Salvant et al.) • Evening: Physics fill – satellites for ALICE • Tomorrow: • Short (1/2 hour) physics fill with high brightness beam (compression and merging) – 78 bunches (exact filling scheme tbd)

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