MPP Main Ring Magnet Performance Panel Meeting

MPPMain Ring Magnet Performance Panel Meeting

Wednesday 13 August 2008

Agenda:

1) General information2) ECR for improvement of dependability of 60 A software interlock.

M. Zerlauth3) Results of the simulations for the different spare quench heaters

reconfigurations in MB magnets. N. Schwerg4) Status of the 600 A circuits ramp rate and acceleration parameters.

W. Venturini Delsolaro5) Matters arising

MPP Meeting 13/o8/2008 A. Siemko/AT-MEI

Injection test in Sector 2-3


Injection test in Sector 2-3 Stopping the beam

ETLT 31/8/08

Stefano Redaelli



Main objectives: Injection

Energy matching Dispersion measurement Aperture scans Trajectory corrections Intensity threshold for BPM system BLM measurements …



Tests with beam (single bunch) Pilot Beam for the most part:

single bunch of 5 - 10 x 109 protons Beam emittance: 1 µm Momentum spread: nominal Nominal tunes, nominal magnetic

machine

Total intensity injected: 1 x 1013 protons


Injection test in Sector 2-3 - First beam to IR3



Trajectory measurements and corrections



Aperture scans


Injection test in Sector 2-3 - First BLM data


Main issues relevant for MPP

First beam induced quench in RB



Induced quenches in 600A circuits due to FPA



QH Power Supply in RBReplacement needed First intervention in the tunnel with RP team

Trip of RQT13

Discharge of QH in RQD


Summary

The sector test has to be regarded as very successful

Essential step towards circulating beams and the LHC startup

MPP contribution MPP has significantly improved efficiency of

the injection test in sector 1-2 Contribution was appreciated by other

participating teams Very useful exercise for participating MPP

experts


Next step - Injection test in Sector 7-8

MPP Main Ring Magnet Performance Panel Meeting

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