Last updated 3/3/2010
Main issues in 2010 is the need to identify the source of the hump in the vertical tune spectra - particularly noticable in vertical tune spectrum of beam 2. Assume to drive the observed vertical beam size.
Aim: Well-adjusted machine, beam instrumentation and machine protection working well enough for first, safe excursions into the ramp.
Prerequisites: machine protection system allows increase intensity/number of bunches [beam dump operational, BIC, BLMs, collimators to coarse]..
Exit:
| BT | Matching between TI8 and sector. Pilots. TDI set-up etc. | OK | |
| AP/OP | Optics | Measure beta beating. Determination of Twiss functions.Establish standard procedure to identify and correct all local sources of phase advance errors. | Analysis ongoing |
| AP/OP | Aperture | Revisit mechanical aperture checks. Free oscillations and local bumps - check the aperture in the cold machine is free and has the expected size | OK |
| AP/OP | Field quality | Field quality checks. Check design fields, field harmonics, fields due to offsets between beam and magnet | Looks good - detailed checks to be performed |
| AP/OP | Aperture | Momentum aperture | |
| AP/OP | Aperture | IR bumps, check aperture in IRs | OK |
| OP/AP/RMS | Field quality | Transfer functions (separation dipoles etc.) | Looks good |
| OP/AP/BDI | Quench levels revisited | Quenchino levels confirmed | |
| OP | Reproducibility after cycling machine | OK |
| RF | Loop adjustment | OK |
| RF | Transverse damper | Commissioning started |
| RF | Longitudinal feedback | |
| BDI | Transverse profile monitors | Wirescanner OK, |
| BDI | Commission beam loss monitors - phase 2, calibration, thresholds. Commission the BLM's around the collimators, triplets - set thresholds etc. | Some thresholds still to be adjusted |
| OP | Closed orbit feedback | First stab, to be fully commissioned |
| COL | Adjustment of collimators, orbit stabilization, test positioning procedures, beam loss monitors. Positioning of jaws with respect to closed orbit. Establish a intermediate set of collimator settings. This for stable beams at 450 GeV and basic protection up the ramp. | OK |
| BT | TDI - adjusted in IR2 and IR8 with respect to beam | Issues with BLMs over injectiing |
| BT | TCDQ, orbit at 6, as coherent part of full collimation set | OK - coverage fully tested at 450 GeV with de-bunched beam |