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Proposal ALICE Task Force on LV Power Supplies and Cables

Proposal ALICE Task Force on LV Power Supplies and Cables. Key technical issues Subdetector requirements Task Force organisation and work programme. Some key technical issues. Location Floor & rack space, cable type & length Regulation at load, filtering COTS (components off-the-shelf)

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Proposal ALICE Task Force on LV Power Supplies and Cables

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  1. ProposalALICE Task Force on LV Power Supplies and Cables Key technical issues Subdetector requirements Task Force organisation and work programme G. Stefanini/ALICE Coordination of Common Electronics Issues/ALICE Forum & TB/subset LECC 010601

  2. Some key technical issues • Location • Floor & rack space, cable type & length • Regulation at load, filtering • COTS (components off-the-shelf) • SEU effects possible even in low fluence • Efficiency • Conversion efficiency, power losses on cables • Reliability • Limited access • Back-up schemes • Grounding and shielding • (Controls) G. Stefanini/ALICE Coordination of Common Electronics Issues/ALICE Forum & TB/subset LECC 010601

  3. FE LV power requirements (preliminary estimates) Voltages on load Power modules V1/I1 V2/I2 V3/I3 Vreg cables (kW) (m) SPD 1.7 20 +1.8V/40A +2.5V/6A yes 40 SDD 2.6 72 2.5V/3A 2.5V/2A 2.5V/1A yes 40 SSD 2.4 40 TPC 50 TRD 75 TOF 120 HMPID 6 PHOS 5 DiMu 20 96 ±2.5V/25A +3.3V/25A 25 ... G. Stefanini/ALICE Coordination of Common Electronics Issues/ALICE Forum & TB/subset LECC 010601

  4. Each subdetector Appoint representative & draft requirements document Inform of contacts/activities already under way Workshop Status, test results, problems Feasibility of common solutions (if any) Survey commercial vendors and developments in Institutes Test procedure definition, quality control & assurance scheme Procurement, spares inventory, long-term maintenance plan Subdetectors remain responsible for their final specs and integration Link with other LHC experiments (technical solutions, possible economy of scale) Task Force organisation and work programme ( ≈ 12 months ?) G. Stefanini/ALICE Coordination of Common Electronics Issues/ALICE Forum & TB/subset LECC 010601

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