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Update 2024_lhc.md (#154)
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* Update 2024_lhc.md

* add tooltip

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Co-authored-by: Felix Soubelet <[email protected]>
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emaclean and fsoubelet authored Jan 15, 2025
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| 2024-05-14 19:00 | 2024-04-15 04:00 | 1WN | MD 11743 | Effect of higher-order contributions to octupole and decapole RDTs | [Shift Plan](2024-05-14, 1081, 4067449){.logbook-link} / [Summary](2024-05-15, 1081, 4067625){.logbook-link} |
| 2024-06-06 07:00 | 2024-06-06 14:00 | 0.2WN 0.7W | MD 12466 | Effect of CMS Solenoid on Optics | [Shift Plan](2024-06-06, 1081, 4082214){.logbook-link} / [Summary](2024-06-06, 1081, 4082930){.logbook-link} |
| 2024-06-06 15:00 | 2024-06-07 01:25 | 0.3W 1WN | MD 11243 | HL-LHC Optics Part 1 | [Shift Plan](2024-06-06, 1081, 4082563){.logbook-link} / [Summary](2024-06-07, 1081, 4082920){.logbook-link} |
| 2024-06-09 22:00 | 2024-06-10 06:30 | 1WN | MD 12263 | Weak-strong beam-beam optics measurements | [Shift Plan](2024-06-09, 1081, 4084974){.logbook-link} / [Summary](2024-06-10, 1081, 4085168){.logbook-link} |
| 2024-06-17 11:00 | 2024-06-17 16:10 | 0.2W | Commissioning | Optics Validation after Technical Stop 1 | [Shift Plan](2024-06-17, 1081, 4088669){.logbook-link} / [Summary](2024-06-17, 1081, 4088847){.logbook-link} |
| 2024-06-24 11:00 | 2024-06-24 12:00 | 0.1W | MD 11243 | HL-LHC Optics Refinement | [Shift Plan](2024-06-24, 1081, 4093837){.logbook-link} / [Summary](2024-06-24, 1081, 4119401){.logbook-link} |
| 2024-06-25 02:15 | 2024-06-25 08:30 | 0.75WN | Commissioning | Ion Optics Commissioning | [Shift Plan](2024-06-25, 1081, 4094368){.logbook-link} / [Summary](2024-06-25, 1081, 4119397){.logbook-link} |
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*[Effect of CMS Solenoid on Optics]: Measured with CMS Solenoid at nominal and then ramped down. Measurements at 30cm end-of-MD show a large betabeat degradation compared to final commissioning validation, more than expected. Before / after ramp-down only gives a negigible difference in optics and local coupling. Detuning impact to be checked offline.
*[HL-LHC Optics Part 1]: Injection optics measured and corrected with success. Ramp was measured and went great except at 1TeV where betabeating goes over 20%. Flat-top optics measured and corrected. Great correction for B2 (incl. dispersion) using two knobs, while B1 uses only one knob but at 70% trim (due to exceeding limit of RQTL.9L7.B1), which still shows good control of betas below 10%.
*[Optics Validation after Technical Stop 1]: Validated optics after TS1 (due to Swiss grid intervention). Beta-beat within a few percent to reference measurements at the end of commissioning. Vertical dispersion significantly improved for B2. Some ampdet measurements for B2 only (B1 blew up). Written as 0.2W despite start/end times because we waited for the aperture measurements to be done.
*[Weak-strong beam-beam optics measurements]: Investigated bunches setup for no long-range (LR), with LR in IP1 and IP5 and with LR in all IPs. Lower betabeat w/o LR, similar for other scenarios. No dispersion changes. Coupling difference in omc3 but not BBsrc. Activation of wires spoild horizontal beta-beating but not vertical: SbS shows IP1 degradation but not IP5 (for bunches with and w/o LR). Looked into 3Qy and 4Qx RDTs, see logbook for details.
*[HL-LHC Optics Refinement]: Refined correction for HL-LHC injection optics. Others proceeded to ramp, loss maps, and aperture measurements. Summary link is for the whole MD in the OP logbook.
*[Ion Optics Commissioning]: Check beta-beating in ramp and flattop, good with Q5 correction. Checked crossing angle in IP8 has little to no impact on optics. Found good global correction but still too large betastart in IP2, refinement to be computed offline. Some measurements taken with IP2 crossing angles for b3 correction.
*[HL-LHC Optics Part 2]: Measurements through the squeeze, with arc bumps and global corrections from flattop. Improved beta-beating with global corrections and local arc bumps for first matchpoints. High beta-beating (>50%) for both beams during the last steps (at 1.15m/0.45m). Beam dumped during squeeze to 37cm.
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