latest MD program at: 

https://md-coord.web.cern.ch/app/#/schedule/2015W35/4

we might be involved in:

MD349: Thu 3am  (rogelio, Tobias)

MD750: DOROS, Sat 2am (Tobias, rogelio, Lukas,)

MD312: to measure amp detuning, Sun 6am (Andy, rogelio)

MD380: 60cm NLIR, Sun 9pm (Tobias, Andy, Lukas, Saskia, Ewen, piotr?)

 

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Saskia, Model simulations at 6.5TeV 40cm

small amplitude of 0.5 is too large, it comes from the bias output of multiturn before cleaning.

actions from getkick.out (uses peak2peak) and getkickac.out (use amp of  Qac) are different in simulation.

This should be investigated.

Also the tunes a small AC dipole excitation are not meeting the twiss tune -> bug in AC dipole kick?

->action, redo simulations with nominal lattice and chromaticity correction.

DA with AC dipole!

Chromaticity does not successfully match to target value.

Bug in getkick (helper.py), the mean2j is not really an average over files as meansqrt2j. This bug might be not cause

problems as getkick is called per file -> to be checked (Jaime)

 

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Andy, large error bars in the dispersion measurement

for beam1, analyzing only positive dpp or negative dpp gives opposite dispersion beating!

Time effect is really excluded; on-momentum orbit is reproducible before and after the scan.

-> try to ingnore on-momentum measurement

-> we re-do dispersion measurement at 60cm with small steps around 0Hz

Amp det measurements were helped by cleaning tune (same SVD cut). Action comes from getkickac.

 

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Tobias, DOROS

Sat 2am

Preparation: we need changeparameters corresponding to the injection corrections for the MD -> Andy

 

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Lukas, ESRF MD

time confirmed to 29 of September. BPM resolution 5-10mum, computed trough subtraction of SVD cleaned

and not cleaned with cut at 12.

BPM longitudinal misalignments too low 0.5mm -> increase to 3mm

Quad gradient 1%, maybe too large -> 0.1%

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AOB

 

Jaime changed the code of coupling conversions in:

-metaclass: which is only for simulations and not measurements 

-segment-by-segment: f-to-R converion, a sqrt appears now. Used for local coupling corrections.

-> in general we need more tests based on simulations (chromatic coupling needed). This would need

 the automatic test of the coupling error reconstruction (as done for phase or betas).