Following up, beta*, ESRF, etc

Name: Following up, beta*, ESRF, etc
Start: 2015-10-09T14:30:00+02:00
End: 2015-10-09T17:30:00+02:00
Location: CERN

Friday 9 Oct 2015, 14:30 → 17:30 Europe/Zurich

6/R-012 - conference room (CERN)

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IPAC abstracts:

Ana et al, "Optics measurement-based BPM calibration" *

Tobias et al, "Chromatic coupling" *

Tobias et al, "h1001 measurement" *

Jaime et al, "Local optics corrections in the HL-LHC IR"

Ewen et al, "Commissioning of non-linear optics in the LHC at injection energy"

Ewen et al, "Non-linear errors in the experimental insertions of the LHC" *

Ewent et al, "Short term DA with AC dipoles"

Andy and Piotr et al, "Limitations on optics measurements in LHC"

Lukas et al, "Comparison of optics measurement methods in ESRF"

OMC, "LHC optics commissioning in 2016 "

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Lukas, ESRF

Same file analyzed for different turns for different number of turns features the tune oscillation only for low number of turns.

Hanning filter did not do anything.

Imposing the same tune makes a great change, as good as increasing number of turns in vert. to be checked -> Jaime and Lukas take a look.

Some phase beating clear.

Beta from amp and beta from phase are very consistent.

Coupling is small.

Plots of spectrum to see possible sources of the tune oscillation.

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Ana, beta from amp

Very good measurement from phase! -> From here beta* is good!

IP5 is worse, maybe the imbalance!

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Piotr, Jumping orbit

-20mum @ MQXA.1R8, on top of measurent!!!!

+10mum @ MQXA.2R8 on top.

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Jaime, HL-LHC

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