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Turn-around after DR? 20050825 Kiyoshi Kubo

Turn-around after DR? 20050825 Kiyoshi Kubo. Conclusion: YES. Unless stable extraction from DR is guaranteed. Required Relative Kicker stability: ~ 7E-4 (TESLA-TDR). Lengths of additional beam line and tunnel depend on DR layout. (see last two slides.). Input from WG1.

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Turn-around after DR? 20050825 Kiyoshi Kubo

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  1. Turn-around after DR? 20050825 Kiyoshi Kubo Conclusion: YES. Unless stable extraction from DR is guaranteed. Required Relative Kicker stability: ~ 7E-4 (TESLA-TDR). Lengths of additional beam line and tunnel depend on DR layout. (see last two slides.)

  2. Input from WG1 • It will help to reduce beam jitter by feed-forward • In particular bunch-to-bunch jitter • Strongly recommended

  3. Additional Cost for turn-around

  4. Case B Case A Extraction arc from DR (~ 3.5 km) Signal line for feed-forward (~ 2.5 km) DR (6 km) DR (6 km)

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