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Extra-Light M1 ? (XL-M1) 20 cm (M1) vs 31 cm (M5). Why not 40 cm wires? 20 cm : “overhead” due to frames A active /A total = 103x28 cm2 / 96x20 cm2 = 150%

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Presentazione sul tema: "Extra-Light M1 ? (XL-M1) 20 cm (M1) vs 31 cm (M5). Why not 40 cm wires? 20 cm : “overhead” due to frames A active /A total = 103x28 cm2 / 96x20 cm2 = 150%"— Transcript della presentazione:

1 Extra-Light M1 ? (XL-M1) 20 cm (M1) vs 31 cm (M5). Why not 40 cm wires? 20 cm : “overhead” due to frames A active /A total = 103x28 cm2 / 96x20 cm2 = 150% 40 cm : “overhead” due to frames A active /A total = 103x48 cm2 / 96x40 cm2 = 129% (plus the “bonus” coming from 2 HV bars removed) Detector X0 : “20 cm” 4gaps 16%2gaps 10% “40 cm”4gaps 14%2gaps 8% Pro: many Con: wire tension scales with (40/31)**2= + 70% 2x instability limit g >>> g redraw pad layout (no wire pads in R4)

2 40 x 200 mm2 ; 24x2 pads 20 x 100 mm2 ; 48x4 pads

3 M1 MX An effect of XL-M1

4 Impact on tooling : in principle all can host 48 cm chambers Halving the frames to wire on M1 Less material ( X0 and $ ) Halving the chambers to mount and test More space for cable in the crowdedmost area

5 Opzione 0 (RPC, M1 4 gaps) FE-LNF408 camere1632 gaps CERN72288 PNPI Opzione 1 (no RPC, M1 2 gaps, PNPI fa M4R4, M5R4) FE-LNF408 camere1152 gaps CERN72288 PNPI FI-RM Opzione 2 (no RPC, M1 M4 M5 2 gaps, PNPI fa M4R4, M5R4) FE-LNF408 camere1008 gaps CERN72288 PNPI FI-RM


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