What are you using AtomECS for?

[ElliotB256]

Hi,

@tiffanyharte and myself would like to know what other people are using AtomECS for. For planning future features it would be very helpful to know what kinds of experiments people are interested in simulating - so please, anyone, feel welcome to comment on this issue :)

I'll add information from the Oxford setups below and tag others who have been using it.

[ElliotB256]

Work at Oxford

• Sr cold atom source: simulations to guide design of a source of ultracold strontium atoms for use in the AION project, using the 461nm cooling transition. We are looking at both Zeeman slowers and transverse-loaded 2D MOT sources.
• AION Sidearm: we will be using AtomECS to simulate different parts of the sequence by which ultracold strontium is produced for the AION project. This includes the cold atom source above, and also recapture in a 3D MOT, loading from blue to red mot, evaporative cooling and transport. We are working with Cambridge for this work, also tagging @MauriceZeuner and @BrianBostwick here.
• Rb cold atom source: simulating an existing Rb pyramid MOT setup, for a new cold atom apparatus we are building (two chamber setup, pyramid cold atom source directed through a differential pumping aperture into a UHV chamber and recaptured in a 3D MOT.
• Rb experiment evaporation ramps: simulating evap ramps on a Rb apparatus. Atoms are confined magnetically. @d-garrick has added time-orbiting potentials (TOP) traps and quadrupole traps. We are also looking at evaporation in an rf-dressed shell trap (@d-garrick, @joshgreensmith). The plan is to compare to experimental data to verify that the collision code is working.

[d-garrick]

As Elliot mentioned, we're simulating the recapture of an atomic flux in a 3D mot. AtomECS is useful for providing capture efficiencies but since we then transition from this MOT to a pure magnetic trap, it would also be useful to accurately simulate the steady state, fully loaded MOT, as well as the compressed MOT stage from ramping detuning & magnetic field to improve loading into the next stage of the trap.

[tiffanyharte]

Work at Cambridge

• AION Sidearm: As mentioned by Elliot above - in Cambridge we're mainly AtomECS to simulate dipole trapping, evaporative cooling, and optical transport of strontium. We will be optimising experiment parameters and evaporation and acceleration ramps. In future we would also like to fully simulate and optimise the loading process from the end of laser cooling in the narrow-linewidth MOT to the optical dipole trap. @MauriceZeuner @BrianBostwick @cahty1006 @kimtka
• Rb and K quantum simulator: We're also currently looking at optimising optical transport of cold rubidium and potassium in the moving focus of a single-beam dipole trap for an optical lattice experiment. We plan to use this to help us identify the effect of various possible noise sources. We have experimental data that we will use to compare with the simulations. @cahty1006