LHC commissioning and ALBA optics activities

Thursday 28 May 2015, 10:00 → 12:00 Europe/Zurich

6/R-018 (CERN)

-Early BPM diagnostics missing in the GUI (in Verena's application, or import Verena's app)

-Tune check and warning (via BBQ system) -> Should we consider a unification with Verena's app

-> Action: Rogelio emails Verena

Andy checked that 2nd Beam2 global knob is good. Could be used at 65cm (or could be recomputed).

Chromatic coupling to be checked since they want to leave the MSS knobs in -> Tobias

-Action: fix files with bad peaks

-beta*: Andy started. Error bars of 5% and around 80cm in Beam1. IP5 vertical a bit off 2%. Tables also with beam 2 to be distributed.  

    -> Computation of beta* by default, with segment-by-segment fast.

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ALBA

Zeus and Michele took Andy's code and looked at it.

RDT at ALBA 'a la' A. Franchi

ALBA RDT successful to reconstruct one skew quadrupole.

Measured sextupolar RDTs rather close to model. Reconstructing a -2Amps change in sextupoles does not work though...

Beta-beating 1.5% rms.

 

 

 

 

 

 

 

 

 

 

 

10:00 → 10:20 ALBA optics issues

Speaker: Zeus Mari