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Powering of Groups of Circuits (PGC) Draft for Sector 56

Powering of Groups of Circuits (PGC) Draft for Sector 56 . Powering Groups of Circuits. PGC.1 : Study of the electromagnetic coupling between circuits at cryostat/powering sub-sector level. PGC.2: Check of the current leads - DFB performance and heat run of a sector. PGC.3:

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Powering of Groups of Circuits (PGC) Draft for Sector 56

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  1. Powering of Groups of Circuits (PGC)Draft for Sector 56

  2. Powering Groups of Circuits • PGC.1 : • Study of the electromagnetic coupling between circuits at cryostat/powering sub-sector level. • PGC.2: • Check of the current leads - DFB performance and heat run of a sector. • PGC.3: • Test of the squeezing procedure at the matching sections and dispersion suppressor regions around points 1, 2, 5 and 8. • PGC.4 • Final machine validation by powering all sectors in unison.

  3. Current levels • Main circuits (13 kA, IPQ and IPDs), there are two possible values: • I_PGC_CYCLE:  5 TeV equivalent current. • I_PGC_EMC: 7000 A for RB and RQs and a scaled current for the IPQs. • Correctors : Realistic profile for machine operation, concerning both the circuits to be powered used and their current values (e.g. it means not powering all the 60 A circuits at full current). • The circuits fed through normal conducting leads will go through a long run at I_COMMISSIONED • The circuits are powered using the operation functions instead of the usual PLEP ramps used for the individual commissioning.

  4. PGC.1 for the Arc Test of the Global Protection Mechanism

  5. PGC.1 for the Arc 5 TeV Ramp

  6. PGC.1 for the Arc Fast Power Abort of the Main Dipole at Intermediate and Nominal Current

  7. PGC.1 for the Arc Fast Power Abort of 600 A Circuits at Plateau and Ramping the Main Circuits The list of 600 A circuits to go through the fast abort, specifying the order, must be provided by MPP

  8. PGC.1 for the Arc Slow Power Abort of a Main Quadrupole

  9. PGC.1 for the Arc Loss of the 'CRYO_MAINTAIN'

  10. PGC.1 for the Arc Full cycle

  11. PGC.1 for the Matching Sections Example: DFBLE cryostat in LR5 The circuits that will go through the fast and slow abort power aborts have to be specified by MPP

  12. PGC.2 Tests Current Leads Performance + Heat Run

  13. PGC.2 Tests Normal Conducting Leads Long Run

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