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]..
|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||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||Transverse damper||Commissioning started|
|BDI||Transverse profile monitors||
|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|