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Materials in SVD and CDC

Materials in SVD and CDC. Y.Yamada at CDC-SVD upgrade task force meeting on Sep. 22,2000. Present SVD and CDC : 2.6 % X 0 beampipe : 0.57 % X 0 Gold : R = 19.99 mm, t = 0.01 mm : 0.29% X 0 (Gold:1X 0 =3.4mm?) inner pipe : R = 20.0 mm, t = 0.5 mm : 0.14% X 0 (Be :1X 0 =352mm)

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Materials in SVD and CDC

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  1. Materials in SVD and CDC Y.Yamada at CDC-SVD upgrade task force meeting on Sep. 22,2000 • Present SVD and CDC : 2.6 % X0 • beampipe : 0.57 % X0 • Gold : R = 19.99 mm, t = 0.01 mm : 0.29% X0 (Gold:1X0=3.4mm?) • inner pipe : R = 20.0 mm, t = 0.5 mm : 0.14% X0 (Be :1X0=352mm) • outer pipe : R = 23.0 mm, t = 0.5 mm : 0.14% X0 (Be) • SVD : 1.69 % X0 • inner cover : R = 26.5 mm, t = 0.1 mm : 0.04 % X0 (CFRP:1X0=240mm?) • Layer 1 DSSD : R = 30.0 mm, t = 0.3 mm : 0.32 % X0 (Si :1X0=94mm) • Layer 1 Rib : R = 30.3~36.8 mm, eff. t = 0.33 mm : 0.17 % X0 (BN: 1X0=200mm??) • Layer 2 DSSD : R = 45.5 mm, t = 0.3 mm : 0.32 % X0 (Si) • Layer 2 Rib : R = 45.8~52.3 mm, eff. t = 0.27 mm : 0.14 % X0 (BN) • Layer 3 DSSD : R = 60.5 mm, t = 0.3 mm : 0.32 % X0 (Si) • Layer 3 Rib : R = 60.8~67.3 mm, eff. t = 0.29 mm : 0.15 % X0 (BN) • outer cover : R = 74.0 mm, t = 0.55 mm, 0.23 % X0 (CFRP) • CDC : 0.34 % X0 • inner cylinder(Cathode layer 1) : R = 83? mm, t = 0.4 mm : 0.17 % X0 (CFRP) • Cathode layer 2 : R = 103? mm, t = 0.4 mm : 0.17 % X0 (CFRP)

  2. upgraded SVD and CDC : 3.4 % X0 • beampipe : 0.62 % X0 • Gold : R = 9.99? mm, t = 0.01 mm : 0.29% X0 (Gold:1X0=3.4mm?) • inner pipe : R = 10.0? mm, t = 0.5 mm : 0.14% X0 (Be:1X0=352mm) • coolant : R = 10.5? mm, t = 0.5 mm : 0.10 % X0 (PF200:1X0=520mm) • outer pipe : R = 11.0? mm, t = 0.3 mm : 0.09% X0 (Be) • SVD : 2.58 % X0 • Layer 1 DSSD : R = 15? mm, t = 0.3 mm : 0.32 % X0 (Si :1X0=94mm) • Layer 1 Rib : R = 15~22? mm, eff. t = 0.50 mm : 0.25 % X0 (BN: 1X0=200mm??) • Layer 2 DSSD : R = 22? mm, t = 0.3 mm : 0.32 % X0 (Si) • Layer 3 DSSD : R = 45? mm, t = 0.3 mm : 0.32 % X0 (Si) • Layer 3 Rib : R = 45~52? mm, eff. t = 0.33 mm : 0.17 % X0 (BN) • Layer 4 DSSD : R = 70? mm, t = 0.3 mm : 0.32 % X0 (Si) • Layer 4 Rib : R = 70~77? mm, eff. t = 0.32 mm : 0.16 % X0 (BN) • Layer 5 DSSD : R = 90? mm, t = 0.3 mm : 0.32 % X0 (Si) • Layer 5 Rib : R = 90~97? mm, eff. t = 0.33 mm : 0.17 % X0 (BN) • outer cover : R = 101? mm, t = 0.55 mm, 0.23 % X0 (CFRP :1X0=240mm?) • CDC : 0.17 % X0 • inner cylinder : R = 103? mm, t = 0.4 mm : 0.17 % X0 (CFRP)

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