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Saturday

Saturday. 7 ish – refill for RP set-up 9:15 Going for Roman pot alignment. Stefano is coming. 12:10 TOTEM: Alignment of horizontal RPs B2 finished, short period of data taking 13:10 loss maps 13:20 beams dump during off-momentum loss map 14:10 Access for ATLAS (CMS in as well)

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Saturday

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  1. Saturday • 7ish – refill for RP set-up • 9:15 Going for Roman pot alignment. Stefano is coming. • 12:10 TOTEM: Alignment of horizontal RPs B2 finished, short period of data taking • 13:10 loss maps • 13:20 beams dump during off-momentum loss map • 14:10 Access for ATLAS (CMS in as well) • muon chamber TGC and safety detector system (sniffer) • 15:10 Access finished • 16:00 Injecting for physics • 17:35 Stable beams fill 2816 • Initial luminosity 5.9 e33 cm-2s-1 • ~1.43e11 ppb at start of fill LHC status

  2. Sunday morning • 02:55 ATLAS toroid back up to nominal current • 05:27 Fill 2816 lost to Electrical perturbation visible on several power converters. FMCM triggered first for RD1.LR5. • 144 pb-1 in 11 hours 51 minutes of stable beams • 06:16 filling again • 06:53 Thunderstorm. All sectors apart from sector 12 trip. • Access required for QPS – Q9.L6 – can’t reset QPS (remote power cycle not possible) • RF, collimators look OK LHC status

  3. 2816 Losses at start of squeeze and going into collision were at the 30-40% level, but there was no noticeable instabilities. Note that we used the I_measure values on RQTF.A12B2 as an indicator of the B2_H tune setting LHC status

  4. vertical emittance for some PSB rings was noticably larger LHC status

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