ACTION Species No. OF BUNCHES/BEAM TIME (8h shifts) COMMENT GROUP Highly tentative start time
Injection of p, Pb to check timing. p,Pb 2,13 or more 0.125   OP/ABP Done
Simple ramp p, Pb 1 0.5 General check, including dump OP Done
Commission beta*=0.8 m in ALICE and beta*=2 m in LHCb, with protons on-momentum, pilot beams, flat machine (with several stops between 3 m and 0.8m). (TCTs, TCPs open, symmetrised) p 3 1 Set-up operations with pilot intensity. This is close to the initial value used for physics. Also sort out BPM issues. OP/ABP Done
TDI re-alignment p 1 1   OP/ABT Done
Apply correction of beta-beating in flat machine (with several stops between 3 m and 0.8m). p 3 1 > 24h required following measurements for offline preparation. Local and global corrections inserted. OP/ABP Done
IR6 interlock BPMS check at injection ( interlock behaviour check with proton trains), check issues with orbit feedback (with packet latency), injection oscillations with Beam 2, ADT setup for low intensity. p >24 0.5 Needs 200 ns proton filling scheme. 1.5 10^10/bunch OP/BI Done
Cross calibration of orbit measurement in low and high BPM gain setting at injection B1 and B2 p 3 0.0625 Must be done before loss maps at flat top. Pilot and INDIV OP Done
optics with experiment bumps; on momentum; try to find collisions in all experiments p 3 0.5 Pilot bunches, Recommended lumi signals:
- ATLAS: LUCID_EventAND_true
- CMS: HF_true
.
OP/ABP Done
Go off momentum at beta*=0.8m, in both directions. Apply and check beta-beating correction knob. Check aperture. p 3 0.25 Afterwards change external crossing angle in ALICE from +145 to -62.5 murad (to get net angle of 60 murad at IP) in collision beam process.This prepares the physics optics. OP/ABP Done
Remove BRAN at IP2 0 0 0 Floating, done remotely when convenient BI Done
Loss maps at flat top p 6 + 2pilot 0.5 INDIV 3. 10^10; correct orbit for beam intensity effect (cross-calibration above), IR7 collimator, TCSG in IR6, TCDQ, check re-setup, further loss maps. Off-momentum loss map. OP/ABP Done
Squeeze in single step, on momentum p 3 pilot 0.1 (Possibly scrape and take over beam from above.) Lower Q', measure Q, Q' through squeeze OP Done
Measure aperture in IR2 p 3 0.5 (Possibly take over beam from above.) Try to finish in 4 h to avoid Pb injection in evening. OP/ABP Done
OP checks (injecton bucket for Pb, transverse feedback,) p,Pb 3 0.125   OP/RF Done
  Ramp, frequency lock, cogging, squeeze, collision setup and first p-Pb collisions p,Pb 6 non-colliding, >2 colliding in each IP 0.75 Need >4 bunches to have collisions in all experiments. Find collisions with help of luminosity experts in experiments. OP/ABP/RF Done
Refill, ramp and squeeze in single step, on momentum p 3 Nominal 0.75 Only if necessary if collisions not found with p-Pb. Measure Q, Q'. Find collisions with help of luminosity experts in experiments. OP Dropped
One or two cycles through squeeze off-momentum p-p with all corrections and bumps, Beam1 and Beam 2, delta<0 first, apply beta-beat correction. (Possibly) repeat p-p Beam1 and Beam 2, delta>0. Check beta-beat. p 3 0.5 Only if necessary. Do two proton beams in parallel with locked RF. Deltap is -+ 2.3 10^-4, radial loop OFF OP/ABP Dropped
Collimator and Roman pot alignment and loss Maps p,Pb 13 1.5 TCT alignment (end of squeeze, collision). Loss maps - detailed list provided. - Alignment of the roman pots (VERTICAL ONLY) - partly done, to be completed. OP/ABP Done
Loss Maps (several fills) p,Pb 13 1.75 Loss maps - detailed list provided. OP/ABP Done
Asynchronous dump tests (squeeze, collision) p,Pb 13 0.25 Could be done at the end of one of the fills for collimaion set up OP/ABT Done
Collisions + first STABLE BEAMS for PHYSICS p,Pb 13 bunches, 8 colliding 1 Ramp with two beams, squeeze, checks, Stable beams.  Only 1-2 h of stable beams. OP/ABP/RF Done
Trains of Pb and p at injection p,Pb 24n 1.5 Bumps for BCT position sensitivity
Bumps for BSRT and wire scans for cross calibration and emittance evolution if not done yet: inject Pb trains 200ns B2 and afterwards p trains 200ns B1
ABP/OP May not happen
Intermediate filling scheme p,Pb 96, 120   Ramp with two beams, squeeze, checks, Stable beams.  Only 1-2 h of stable beams. OP/ABP  
Full filling scheme p,Pb 338   Following minimum bias data collection by ALICE OP/ABP  
Increase p intensity 2,3,4, ... 10^10 p,Pb 338   Level luminosity in ALICE to 1. 10^29 with transverse separation if necessary OP/ABP  
        Physics production OP  
VdM scans       To be scheduled OP/LPC/ABP  
ALICE polarity switch       To be scheduled OP/ABP  
Beam reversal       To be scheduled, half-way through luminosity integration. Detailed setup procedure once p-Pb established OP/ABP/RF  
        Physics production OP  
VdM scans       To be scheduled OP/LPC/ABP  
ALICE polarity switch       To be scheduled OP/ABP  
20/01/2013 16:12
Maintained by John Jowett