Global waist correction and commissioning preparation

→ Europe/Zurich
6/2-008 (CERN)

6/2-008

CERN

15
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Ewen, Tobias,  GLobal correction with K-mod OR calibrated, GUI testing

Implemented a flag in correct.py to take another file for getbeta input file.

However there are two potential new files: from K-mod and from calibrated BPMs.

-> Define a clear strategy to use BPM1s in correct.py! -> Maybe K-mod and calibrated 

betas should be averaged??? -> Need to check ion run data.

 

GUI testing

Tracking simulations (free kick) with errors everywhere in the machine (scan in triplet errors).

Betas from model used for BPM1s in a separate file.

Problem with correct GUI.

TO-DO: Allow for correction weigths given by the user only, Lukas, Jaime -> Presentation soon with a solution.

-> check for AC dipole too

Case no errors in triplets (no noise): Beta-beating in the IR goes to zero! even-though there is some beating 1-3% in the arcs.

Case errors in triplets (no noise): Also works, but needed extra weight on the beta at BPM1s.

Cases with noise did not change the results significantly.

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Andy, ALBA

0.3% systematic error

0.7% random

BPM range for ESRF? and number of BPM combination?  11-BPM range and 10 BPM combinations.

Maybe not optimal for ESRF. ->  To be presented by Lukas

Let's compare ALBA and ESRF BPM noise with the same SVD cut criteria -> Andy

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Jaime,  K-mod GUI

Testing K-mod GUI in simulation mode.

Assumption to go IP-based always. No attempt to use only partial data.

Felix: Already uses this files from GUI for beta* calculation, fit does not include error bars yet (check with Ana).

Point selection on python GUI done. Anaconda to be used and tested in the CCC.-> Next meeting Felix,

check again with IT to include Pylab, matplotlib.

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Ana, Ballistic

get_ballistic_calibration.py finished.

To-Do: Remove the not used BPMs to avoid 100m error bars (List ready, to be implemented and checked). Using only arcs for action calculation.

 Run for Ion run!

Problem with large beta-from-amp deviations -> Try to diagnose BPM2 problem to report to BI.,

implement filters.

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2016 commissioning:

Away list:

Tobias Apr 9-10 

Lukas  Apr 11-18

Andy  Apr 11-18

Jaime Apr 11-18 (TBC)

Luis Apr 11-18

Critical week FCC availability: Felix, Ana, Rogelio, Tobias, Ewen, Piotr?

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

There are minutes attached to this event. Show them.
    • 10:00 → 10:20
      Updates on global waist correction 20m
      Speakers: Ewen Hamish Maclean (CERN), Tobias Hakan Bjorn Persson (CERN)
    • 10:20 → 10:35
      ALBA Studies 15m
      Speaker: Andy Sven Langner (CERN)
    • 10:35 → 10:45
      Updates on k-mod GUI 10m
      Speaker: Jaime Maria Coello De Portugal - Martinez Vazquez (Ministere des affaires etrangeres et europeennes (FR))
    • 10:45 → 11:00
      Ballistic BPM calibration 15m
      Speaker: Ana Garcia-Tabares Valdivieso (Ministere des affaires etrangeres et europeennes (FR))
    • 11:00 → 11:20
      Commissioning and preparation 20m