A Fast, Deterministic Source of Cr Atoms

Results: Monte Carlo Simulation

  MOT atom number governed by Poisson processes:

• Detected single atom fluorescence rate of (3320 to 3750) s^-1
• Photomultiplier background of (110 to 350) s^-1
• Atom capture by MOT
  • Intentional load rate up to 120 atoms s^-1
  • Spurious load rate of 0.8 atoms s^-1
  • Loading lag time of (3.5 to 4.3) ms
• Atom loss from MOT with lifetime of (2 to 5) s

  Feedback control modeled according to selected values for

• Loading threshold rate of (1000 to 1140) s^-1
• MOT dump threshold rate of (7000 to 7700) s^-1
• Ratemeter time-constant set at 5 ms

  Model captures essential physics of feedback controlled MOT

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Online: April 2003
Last Updated: February 2008

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