Summary notes of LCU meeting on 9/07/2007

Present: MA, CB, RB, FC, SF, MG, AG, EM, FeRo, RT, PL, TW, FZ

Report from meetings

• SLM -> MG
  The new SLS scheme is briefly reviewed, stressing that the current one will be stopped by the end of this year.
• ICC -> MG
  The reparation of the superconducting link in IR3 generates delays in the activities in sector 2-3. The SSS533 replacing the SSS523 in slot Q11R2 will be ready for installation by mid-August. The cartridges used for the reparation of the low-beta triplets were successfully tested on the Q1 to be installed in IR1. As far as the power tests for sector 7-8 are concerned, 67 converters were tested out of 180.

LHC transverse dumper expected performance -> W. Höfle (pdf file)
A review of the performance of the transverse dumper is made. The aim is to define an operational scenario for the use of the dumper and octupoles at top energy. As an outcome of the presentation some issues were identified:

• the correctability of the injection kicker overshoot should be verified. It will have an impact on the first injected bunches;

• the level of noise tolerated by the beam at top energy should be assessed. This is a crucial piece of information to decide whether the dumper can be used at top energy;

• there is some potential gain in the signal-to-noise ratio in a trimming of the optics of the IR4 insertion. It is mentioned that the vertical beta-function at Q7L should be increased to about 100 m (it is currently about 87 m) from Beam 2;

AOB
 

Last update: 7-August-07

MG

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