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S45: Where were we? Where are we going? Re-commissioning!

S45: Where were we? Where are we going? Re-commissioning!. Test and targets. Achievements w.r.t. the targets. Consolidation Interconnection Cryostats: Main Circuits Spool Pieces PIMs: only vacuum chambers Q5-D4-DFBM – short to ground corr. Q5 IPQ/D + correctors

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S45: Where were we? Where are we going? Re-commissioning!

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  1. S45: Where were we? Where are we going? Re-commissioning!

  2. Test and targets

  3. Achievements w.r.t. the targets

  4. Consolidation Interconnection Cryostats: Main Circuits Spool Pieces PIMs: only vacuum chambers Q5-D4-DFBM – short to ground corr. Q5 IPQ/D + correctors PO (FGC), CO (PIC), MEI (QPS) software updates From Feb. to July:

  5. General strategy • Re-do (I_min_op) • PCC • PIC2 tests (updates+safety) • IST QPS • Re-do (PLIs - PNO) • Case by case (circuit type)

  6. Done Interconnection cryostat opened QPS: Firmware update of main bus-bar protection system PIC additional test step introduced to test a FPA and discharge request also on the Odd side of the circuit to validate the proper opening of the QPS loop Re-commissioning proposal (same after Xmass): QPS IST PCC + PIC2 PLI1.a2/f5 (cycle @ inj.) – PLI2.f1 (Extraction @2kA) PNO Mains – RB/RQD/RQF

  7. Done: All at nominal current during first powering No issues experienced No manipulation of the circuits during the consolidation period. Re-commissioning proposal: QPS IST PCC PIC2 PNO.c4 (asymmetric ramp + leads check) IPQs arc:

  8. Done: All at nominal current during first powering No issues experienced Interconnection Q5-D4-DFBM opened. Re-commissioning proposal: QPS IST PCC PIC2 PNO.c4 (asymmetric ramp + lead check) Q5 and D4.R4: PLI2.f3 (Q5) e PLI2.f2 (D4) or directly to PNO? IPQ/Ds LSS

  9. Done: PCC performed in all 60/120A – considered OK A few interconnections opened during consolidation Re-commissioning proposal: 120A: PCC+PIC2 120A: PNO – 3 steps/circuits 60A: PCC 60A: PNO.a1 (lead R) in ~20 circuits 60A 60A: PNO.d1 (crowbar) for all – 1 step/circuit DOC circuits - arc

  10. Done: PCC+PIC2 performed in all 60/120A – OK Interconnections D4-Q5-DFBM opened during consolidation to fix sc in RCBYV5.R4B1 Re-commissioning proposal: Correctors of Q5.R4: all procedure PCC PIC2 PNO for the rest DOC lss:

  11. Done: PSC performed in all 600A – considered OK Interc. Cryost. Aperture: spools Re-commissioning proposal: Firmware update for all 600 A protection systems PCC (asked by PO) PIC2 600A EE: PLI1.b1 + PNO 600A CB: PNO Spool pieces (RCDs – RCSs): repeat PCS RCOs: to be totally comm. (parameters issue) 600A:

  12. Proposal re-commissioning S45 1 2 13 3 24 14 2 30 94 30% less + XL5 and PGC

  13. Planning XL5 MR4 A45 LL5 All new RQX 600A 120A IPQ IPD 120A 600A RB QD QF IP 600A 120A 60A IPQ IPD 120A 1 7 5 2 2 4 1 1 1 1 8 49 16 94 3 1 10 Cryo OK for 1.9K operation and 4.5K operation in the MS ELQA – TP4E ELQA_TP4E W. x ELQA – TP4E Connections ELQA – TP4E Connections QPS W.x+1 Connections Connections PIC2 + PLI + PNO PNO PNO QPS QPS QPS PNO PNO PNO PNO P N O P N O W. x+2 PNO PGC W.x+3 Front1 Front3 Front2 Front2

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