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RT Solenoid-Cavity Spacing

RT Solenoid-Cavity Spacing. Baseline 3.5 cm Drift 18 cm Solenoid 3.5 cm Drift Room Temperature Cavity. Drift Beam Pipe Length ?. 3.5 cm Drift 18 cm Solenoid 3.5 cm Drift Cavity. 7.9 cm Drift 9.2 cm Solenoid 7.9 cm Drift Cavity. Yuri designed 9.2 cm long solenoid (no flanges)

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RT Solenoid-Cavity Spacing

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  1. RT Solenoid-Cavity Spacing • Baseline • 3.5 cm Drift • 18 cm Solenoid • 3.5 cm Drift • Room Temperature Cavity Drift Beam Pipe Length ?

  2. 3.5 cm Drift • 18 cm Solenoid • 3.5 cm Drift • Cavity • 7.9 cm Drift • 9.2 cm Solenoid • 7.9 cm Drift • Cavity • Yuri designed 9.2 cm long solenoid (no flanges) • If solenoid works and cavities have “design” length • 7.9 cm for drifts • What is the maximum distance we can live with in the RT section without effecting beam dynamics ?

  3. Use TRACK simulation • Use PD Baseline (?) from March 8th, 2005 • Increase all drift spaces in RT section from 3.5 cm (baseline) to 14 cm in steps of 0.5 cm • No rematching • Plot RT outputs: • Beam x-y RMS • x-y Emittances • Longitudinal Emittance • DW/W

  4. 15% 40% 280% 45% • 3.5 to 6 cm appears OK at 30 mA

  5. Spoke Section • Beam Dynamics Baseline • Single Spokes • 10.5 cm Drift • 18 cm Solenoid • 10.5 cm Drift • SC Cavity • Double Spoke • 6 cm Drift • 32 cm Solenoid • 6 cm Drift • SC Cavity • 6 cm Drift • SC Cavity ~7 cm

  6. Use TRACK simulation • Use PD Baseline (?) from March 8th, 2005 for Single Spokes Cavities • 15 Mev to 33 MeV • 16 SS Cavities • Increase all drift spaces in RT section from 10.5 cm (baseline) to 60.5 cm • No rematching • Plot RT outputs: • Beam x-y RMS • x-y Emittances • Longitudinal Emittance • DW/W

  7. 35% 30% 120% 46% • 10.5 to ~20 cm appears OK at 30 mA

  8. Triple Spoke Section

  9. Use TRACK simulation • Use PD Baseline from March 8th, 2005 for Single Spokes Cavities • 33 Mev to 111 MeV • 28 DS Cavities • Increase all drift spaces in RT section from 6 cm (baseline) to 65 cm • No rematching • Plot RT outputs: • Beam x-y RMS • x-y Emittances • Longitudinal Emittance • DW/W

  10. 6 to ~40 cm appears OK at 30 mA

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