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LHC 8 & 9 May 2015 7:10: Injection kicker B1 faulty on oil level –Check in UA and RA. Leaks fixed, to be further checked in TS1 10:30: Pre-cycle started.

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Presentation on theme: "LHC 8 & 9 May 2015 7:10: Injection kicker B1 faulty on oil level –Check in UA and RA. Leaks fixed, to be further checked in TS1 10:30: Pre-cycle started."— Presentation transcript:

1 LHC 8 & 9 May 2015 7:10: Injection kicker B1 faulty on oil level –Check in UA and RA. Leaks fixed, to be further checked in TS1 10:30: Pre-cycle started 11:45: No beam from SPS 12:45: Starting set-up of transfer line collimators –In parallel gated BBQ for tune measurements commissioned –Injections slowed down by intermittent problem on PS RF cavities –BLM latency measurement OK 19:00: Interlocked BPMs re-checked 19:30: Set-up of transfer damper (ADT) 01:15: Ramp for snapback 07:50: Start next ramp for de-squeeze measurements LHC Morning meeting – ML & JU19/5/2015

2 Gated BBQ for Tune measurement Aligned gate of B1 & B2 gated BBQ The pilot is not seen by the gated BBQ - as predicted by Marek 9/5/2015LHC Morning meeting – ML & JU2

3 Transfer Line Collimators Started with steering the lines and establishing golden trajectories Had some issues with collimator controls to change settings of TCDIs - was solved with SW release New combined SPS cycle for pilot and nominal is not working for automatic scan application, have to use the pilot cycle for this measurement Will come back to proceed with the measurement of TCDI centres (foreseen for Sunday) 9/5/2015LHC Morning meeting – ML & JU3 ABT team

4 Ring Collimators Nominal injection settings deployed for all ring collimators in the injection beam process These are good for up to ~50 nominal bunches at 450-GeV Ramped up to coarse settings at flat top 9/5/2015LHC Morning meeting – ML & JU4 Collimation team

5 Transverse Damper Injection Oscillation fixed display works, it shows the first bunch of the injected batch Closed all 8 feedback loops with pilot bunches Closed all 8 feedback loops with nominal bunches Functions arrive correctly, minor changes in phase shifts, to be propagated to LSA Loops close/open at injection and beam dump events Still some work left 9/5/2015LHC Morning meeting – ML & JU5

6 Snapback and Q’ Start with pre-cycle –chroma decay @ injection Expert comes in to look at tune signal  change settings which were ‘lost’ Ramp, lost B1 at the beginning of the ramp, but brought B2 to flat top and let the tune decay for 20 minutes before ramping down 9/5/2015LHC Morning meeting – ML & JU6 Tune signal with freq. modulation over the ramp

7 Next 9/5/2015LHC Morning meeting – ML & JU7


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