HLLHC SM 18 DMM needs SM 18 Horizontal

HL-LHC SM 18 DMM needs SM 18 Horizontal benches G. Ninet 25. 03. 2021

Reference documents: § § HL-LHC drawings per magnets given by Herve Prin are actually used as reference document BUT they are for LHC circuit, not SM 18 circuits § Ex : Q 1 magnet :

Horizontal benches DMM tests: WARM : § § § Continuity and electrical check @Warm (initial and final) (punctual) Special request : F 1 bench DMM should be used to compare and commission QPS system Thermal cycle : § § RRR during cooldown CD 1, warm-up after powering (natural) and thermal cycles COLD : § § Coils, splices monitored during powering tests @cold (mandatory)

Test requirements: § Gerard’s proposal 1 st of March 2021 :

Test requirements summary for DMM needs:

Planning 2022: e t a d p U s s e r g o r p in Green : Cold test / Asy&Co : bench upgrade and commissioning In 2022, 2 worst cases : Q 1, D 2 and Q 2 in same time @cold CP, D 1, Q 2 (CD, WU or Powering) and D 2 in preparation F 1 remark : no time between 2 Q 2 magnets = DMM continuous needs !

HL-LHC magnets voltages : Prototype magnets : § § D 1 and CP should not have additional channels D 2 : MBRDP 34 Vtaps (10 for series), MCBRDP 48 Vtaps (32 for series) Herve Prin 17. 03. 21 Series magnets :

Horizontal benches DMM needs : • Study :

Calcul and estimation of needs Available now : See next slide for proposal of new repartition

Proposal : ! se bert u no h H Do wit e Se