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Crab-Crossing and Luminosity Simulations

Crab-Crossing and Luminosity Simulations. J.W. Flanagan, KEK 2003.1.20. SuperKEKB Parameters w/wo Crab Crossing. 0.138. 2.6e35. Weak-Strong Simulation. Strong-Strong Simulation. Luminosity. Luminosity: Beam-beam parameters: Energy transparency:. Luminosity Reduction Factor.

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Crab-Crossing and Luminosity Simulations

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  1. Crab-Crossing and Luminosity Simulations J.W. Flanagan, KEK 2003.1.20

  2. SuperKEKB Parameters w/woCrab Crossing 0.138 2.6e35 Weak-Strong Simulation Strong-Strong Simulation

  3. Luminosity • Luminosity: • Beam-beam parameters: • Energy transparency:

  4. Luminosity Reduction Factor Hirata Formula: F(emittance, beta, crossing angle, bunch length)

  5. Simulation: Crab-Crossing • Crab-crossing restores full luminosity of a head-on collision. (S-S)

  6. Ohmi Simulations For crossing angle > 10 mrad both W-S and S-S show vertical beam-beam parameter saturating at ~0.06. At zero crossing angle, W-S and S-S disagree.

  7. SuperKEKB Parameters w/woCrab Crossing 0.06 1.2e35 0.138 2.6e35 Weak-Strong Simulation Strong-Strong Simulation

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