02/09/2010 Access conditions for test of the RB.A23 at 17:30. Splice mapping. Complete machine closed by ~18:00.Problems in getting TI2 ready for injection.

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Presentation transcript:

02/09/2010 Access conditions for test of the RB.A23 at 17:30. Splice mapping. Complete machine closed by ~18:00.Problems in getting TI2 ready for injection (some PC still blocked-out) + ALICE inj. permit 19:30 – 20:00 verification of the beam trajectory in TI2 and TI8 in order to check for any potential effect of magnet replacement in SPS with pilot beam. Only minor (H) corrections applied (Jörg): not yet copied to the other cycles. To be verified once we move to trains. Accesses in points 5 – 6 and 8 to solve problems with QPS and completion of re-commissioning of circuits affected by interventions during the technical stop

02/09/ :30: all circuits tests completed. OK from MP3 to power RB.A23. Machine closed and ready for pre-cycle 04:00 Machine ready for injection for B2 at ~04:00. Issue with interlock coming from TI2 collimators for injection of B1 Corrections for B2 orbit 06:30 Access in point 2 for interlock issue. Problem with a cable connection. 07:30 End of access start pre-cycle

Plan 3FriM8 Ramp/squeeze/collision test with single bunch/beam 1e10 at 2 A/s for qualification of the status of the machine + dump qualification\ 3FriA4 Transverse feedback setting up: noise reduction (450 GeV - single nominal bunch) 3FriA/N8 ramp at 10 A/s with single bunch/beam 1e10 + squeeze: measure - correct - re-measure beta m- K-modulation + dump qualification 4SatM8 Injection / injection protection: bunch trains up to 12 bunches (150 ns spacing) - crossing angles ON 4SatA4 Injection / injection protection: bunch trains up to 12 bunches (150 ns spacing) - crossing angles ON 4SatA4 Check whether 100 murad half-angle OK with 12 nominal bunches 4SatN8ramp at 10 A/s with single bunch/beam 1e10 + squeeze: measure beta m 5SunM8 Transverse feedback setting up: noise reduction (450 GeV - single nominal bunch) - crossing angle ON 5SunA8 Injection / injection protection: bunch trains up to 4x12 bunches (150 ns spacing) - crossing angles ON 5SunN6ramp at 10 A/s with single bunch/beam 1e10 + squeeze and crossing angles ON 6MonM8 Injection / injection protection: bunch trains up to 4x12 bunches (150 ns spacing) - crossing angles ON 6MonA8 Collimation set-up at 450 GeV/c 6MonN8 Transverse feedback setting up: noise reduction (450 GeV - single nominal bunch) - crossing angle ON

02/09/2010 Polarities for ALICE solenoid/spectrometer: + + Polarity for LHCb spectrometer: - External crossing angles: – IR1: -100  rad at inj./ramp/squeeze/collision – IR2: ±170  rad at inj./ramp and ±110  rad squeeze+collision – IR5: +100  rad at inj./ramp/squeeze/collision – IR8: -100  rad at inj./ramp/squeeze/collision – To be finalized crossing angle for injection/ramp: 170  rad at inj./ramp for all IPs?