Minutes/Date

Topics presented

• Collimation after LS1: Cleaning and β* Reach (R. Bruce)
• Preliminary Summary of the LHC Scrubbing Run (H. Bartosik)

• Recent Simulations on Beam-Beam Effects and some Measurements (T. Pieloni)
• Recent Observations on Bunch Length Splitting in LHC Beam 1 (M. Hostettler)
• Performance Evolution vs. Machine Parameters in the last 3 Weeks (G. Arduini)

• Follow Up from Previous Meeting: Fill-to-fill Luminosity Comparison (M. Hostettler)
• LHC Instabilities: Needs for Tests with Octupole Older Polarity (T. Pieloni)
• Merging Flat-beam MD and Long-Range tests with 25ns Beams (T. Pieloni)

• LHC Luminosity Lifetime Observation in 2012 (M. Hostettler)
• Operation with ADT increased Bandwidth (D. Valuch)
• Stability of Luminosity Optimizations (J. Wenninger)

• Observation of 50Hz Lines in the LHC BBQ System (R. De Maria)
• Tune System Performance with/without Gating (R. Steinhagen)
• Proposal to Change Bunch Length during Physics Fills (B. Salvant)

• Summary of p-Pb Tests and Preparation of p-Pb Run (R. Versteegen)
• Vacuum Activity around the MKIs and Threshold Values (M. Barnes)
• Scrubbing Run: TDI, MKI and MKE interlocks (J. Uythoven)

• TS#3-2012 Activities (K. Foraz)
• Luminosity-calibration systematics from non-linear x-y correlations in the 3-d L distribution (W. Kozanecki)
• Beam Loss and Beam Shape at the LHC collimators (F. Burkart)

• Plans and Goals of the Scrubbing Run (G. Rumolo)
• Status and Prospects of Q/Q' Measurements (R. Steinhagen)
• LHC Performance with Low-Emittance H=9 Beam (M. Kuhn)

• ADT Tune Measurement (W. Hofle), animation
• Coupling Correction (T. Persson)

• Status of the Impedance-Damper Model (N. Mounet)
• Nested HT Method: Impedance and Damper (A. Burov)
• Instability Observations with new Octupole Setting (X. Buffat)

• Inconsistencies in the MQY Transfer Function (E. Todesco)
• Correlation Between Quadrupole Errors and Measure Beta-beating (R. Tomas)
• Preliminary Analysis with the BLM Recognition Tool (E. Del Busto)

• Recent Observations of Instabilities (T. Pieloni)
• Fast Beam Losses During Beam Dump Process due to (missing) LR Beam-Beam kick (T. Baer)

• Update on UFOs: 2012 Observations, Studies and Extrapolations (T. Baer)
• Observation with Diamond Sensors during LHC Operation (M. Hempel)

• Status of Beam Gas Ionization Monitor (BGI) (M. Sapinski)
• Optics and Aperture Calculations for p-Pb in Physics conditions (R. Versteegen)
• Update on Plans for the First p-Pb Run (J. Jowett)

• Technical Stop #2 2012 (J. Coupard), activities list
• BE-CO work for the TS#2 (P. Charrue), To-do list
• Restart after TS#2 (J. Wenninger)

• Analysis of Recent Beam Instabilities (E. Metral)

• LHC Transverse Feedback (D. Valuch)
• Energy Matching (J. Wenninger)

• Observations on luminosity curves (G. Papotti)
• Beam-beam footprint viewer (X. Buffat)

• BE-CO work for the TS#1 - Outcome of the Actions (P. Charrue)
• Losses in Ramp and Squeeze (J. Wenninger)
• Observation of Losses and Instabilities during Collisions (X. Buffat)

• Technical Stop #1 2012 (J. Coupard)
•  BE-CO Work for the TS (P. Charrue)
• Injection and Transfer Line Stability (L. Drosdal)
• Orbit and Orbit Feed-forward in Squeeze and Collision BPs (j. Wenninger)
• 'Recovery' from TS (J. Wenninger)

• Orbit Feedback Issues Status and Plans (J.-J. Gras)
• Leveling Test: Machine Experience Preliminary Results (T. Pieloni)
• Chromaticity Decay and Snapback (N. Aquilina)
• Simulations of IBS for Protons in 2012 (M. Schaumann)

• Recent Instabilities Observed in the LHC (N. Mounet)

• First Optics Measurements 2012 (E. Maclean)
• 2012 Aperture Measurements - Preliminary Results (S. Redaelli)

• Chromaticities, Octupoles' Currents and Bunch Length for the 2012 run (E. Metral)
• Sources of Orbit Perturbations in the Squeeze (J. Wenninger)
• Ramping Faster - Follow Up (M. Lamont)
• Preliminary LHC Planning for Week 12 (G. Arduini)

• LHCb External V Crossing Angle (R. Alemany Fernandez)
• Ramping Faster (M. Lamont)
• b3 Decay at 4 TeV Measured at SM18 and Possibility of a Faster Ramp (N. Aquilina)
• Tune Behaviour During Injection and Ramp (N. Aquilina)
• MPS Commissioning for 2012 run (M. Zerlauth)

• Machine checkout 2012 (J. Wenninger) Beam commissioning plan outline
• BI 2012 commissioning plan (F. Roncarolo)
• Plan for the DSO test (M. Tavlet)

• Re-commissioning 2012 (J. Wenninger) Beam commissioning plan outline
• LHC Injection and Dump Re-commissioning 2012 (W. Bartmann)
• RF and ADT 2012 Commissioning (T. Mastoridis)
• Considerations for the Optics commissioning at b*=0.6 m (G. Vanbavinckhove on behalf of R. Tomas-Garcia)
• LHC Beam Loss Pattern Recognition Application (M. Nagel)

• Consideration on the CMS V shift (M. Giovannozzi)
• New IR6 Optics with Optimized Phase Between MKD and TCSG (S. Fartoukh)
• Check of LBDS for New IR6 Optics (B. Goddard)
• LHC Cycle for Proton Physics Operation (S. Redaelli)
• Update on Beam Induced Heating (B. Salvant)

• Vertical Crossing Angle at IP8 (R. Bruce)
• Superconducting Circuits Re-Commissioning after the 2011 Christmas Break (M. Pojer)
• IP position offset @ IP5 (J. Wenninger)

• Vacuum Activities During Xmas Braek: CMS and LS2,8  (V. Baglin)
• Margin for Beam Position Interlocking at the TCDQ, Analysis of 2011 Data (J. Wenninger)
• TDI Beam Screen Deformation (R. Losito)