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SB2009 - DSB3 LATTICE

SB2009 - DSB3 LATTICE. STRSECI: INJ/EXTRACTION. Inj/Extr 318 m. 1000 m. 400 m. 75% radiation in wigglers. 12.5% radiation in this arc. RF 8 cavities 42 m. 32 wigglers 122 m. 12.5% radiation in this arc. STRSECR: RF AND WIGGLERS. DR Parameters. 1/2 circumference. <1/2 RF cavities.

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SB2009 - DSB3 LATTICE

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  1. SB2009 - DSB3 LATTICE STRSECI: INJ/EXTRACTION Inj/Extr 318 m 1000 m 400 m 75% radiation in wigglers 12.5% radiation in this arc RF 8 cavities 42 m 32 wigglers 122 m 12.5% radiation in this arc STRSECR: RF AND WIGGLERS Guiducci - Damping Ring

  2. DR Parameters 1/2 circumference <1/2 RF cavities ~1/3 wigglers Guiducci - Damping Ring

  3. DR • Overview • DR circumference 6.4  3.2 km • N bunches 2600  1300 • Reducing circumference and number of bunches by keeping the same current keeps the same DR performance and reduces costs • Technical work done for 6 km ring can be applied to 3 km, similar layout, similar straight sections • Issues: • Kickers • Low emittance • E-cloud 1300 bunches (6 ns) • (12 ns option has a direct impact on luminosity for 3 km ring) • Reevaluate fast ion • E-cloud 2660 bunches (luminosity upgrade): more challenging, requires more simulation studies, further mitigation techniques, more expensive vacuum design, etc. Same as 6.4 km, R&D in progress, CesrTA, ATF Guiducci - Damping Ring

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