Sweeping Magnetic Field on Neutral Atom Trap

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Presentation transcript:

Sweeping Magnetic Field on Neutral Atom Trap Anya Forestell, TRINAT Supervisor: Dr. John Behr amforest@edu.uwaterloo.ca

Table of Contents TRINAT Overview Power supply communication Near Helmholtz simulations Camera setup Current Sweep What next?

TRINAT Overview Polarization Axis Fenker et al., PRL, 2018.

Power Supply Communication Moserial, CuteCom, GtkTerm None quite worked C++ code No answers from power supplies Python code Worked!

Near-Helmholtz Simulation

Near-Helmholtz Simulation

Near Helmholtz Simulation X Z Y Design Field measurements Anti-Helmholtz Helmholtz Probe

Near-Helmholtz Simulation Anti-Helmholtz Coils Constant current: 4A Measured: X field along X axis Y field along Y axis Z field along Z axis Others are 0 due to coil symmetry

Near-Helmholtz Simulation Helmholtz Coils Current: 1A - 5A Measured: X field along X axis Y field along all axes Z field along Z axis Others are 0 due to coil symmetry Example: Y field along Y axis at 4A

Camera Setup Trap 250mm lens Red glass filter 30mm lens Camera Design/setup Firefly camera System of lenses

Center of cloud: 0.15mm x 0.05mm off Lamp and Target Images

Current sweep: Uniform Magnetic Field Balanced coils Current sweep: -1.0A - 0.0A, steps of 0.2A Optimized current confirmed: -0.44

Current Sweep: Gradient Magnetic Field

Current Sweep: Gradient Magnetic Field

What next? Sweep bigger gradients Take more data to get clearer trend (and smaller steps of gradient) Create predictive model and compare data to it Better probe sensitivity

Thank you! Questions?