Calculations

accelerationDueToPushBeam.m

Corrected errors in the formula for the acceleration due to the push beam.

2021-07-11 06:13:49 +02:00

accelerationDueToSpontaneousEmissionProcess.m

Cosmetic changes like the change of variable names to reflect their correct definition and use.

2021-07-11 06:15:02 +02:00

angularDistributionFunction.m

No major change.

2021-07-11 06:15:49 +02:00

bootstrapErrorEstimation.m

Major change how the loading rate is calculated from the raw output of the simulator - Zero crossing of the autocorrelation of the time series - which is the number of loaded atoms at each time step - is used to determine the length of each of a 1000 bootstrap samples obtained by sampling with replacement. Mean in each sample is calculated and a sampling distribution of means obtained. The capture ratio is the mean of this distribution which when multiplied by the "reduced" flux gives the loading rate. Standard Error and 95% confidence interval are also calculated from the sampling distribution.

2021-07-11 06:22:44 +02:00

calculateCaptureVelocity.m

Added a switch to change between 2D and 3D MOT cases to allow for this code to be expanded and generalized in the future.

2021-07-11 06:18:21 +02:00

calculateClausingFactor.m

Includes calculation of the Clausing Factor from an analytic expression (obtained from the Etienne Staub Master thesis) and an approximation.

2021-07-11 06:24:27 +02:00

calculateFreeMolecularRegimeFlux.m

Removed the multiplication of the full Clausing Factor since the correct flux coming out of the oven is obtained by accounting for the clipping by the aperture which is done by numerically integrating the angular distribution till the exit divergence angle that is limited by the aperture to obtain what is called the "reduced" Clausing Factor. This is calculated in the initialVelocitySampling and multiplied to this flux to get the "reduced" flux.

2021-07-11 06:28:50 +02:00

calculateLoadingRate.m

Major changes - rewrote how autocorrelation, resampling and determination of loading rate is done.

2021-07-11 14:47:13 +02:00

calculateLocalSaturationIntensity.m

Wrapped the distance between a point and a line calculation in a Helper function.

2021-07-11 06:30:06 +02:00

calculateReducedClausingFactor.m

Wrapped the calculation of the "reduced" Clausing factor - which is the probability of an atom exiting from the oven within a smaller solid angle as determined by the apertures/orifices along the way.

2021-07-11 14:40:43 +02:00

calculateTotalAcceleration.m

Changed variable names.

2021-07-11 14:45:18 +02:00

computeCollisionProbability.m

Wrapped the calculation of the collision event probability in its own function.

2021-07-11 14:39:26 +02:00

computeTimeSpentInInteractionRegion.m

Determines the distribution of times spent by atom in the MOT interaction volume to be used to compute the collision probability between the incoming hot atoms and the atoms slowed near the center of the MOT.

2021-07-11 14:38:37 +02:00

doOneParameterScan.m

Added the option to plot the confidence interval.

2021-07-11 06:31:30 +02:00

doTwoParameterScan.m

Added the option to save the Confidence Interval of the obtained loading rate for each scan point.

2021-07-11 06:34:51 +02:00

exitCondition.m

Wrapped the exit condition in to its own function now checking if the position, velocity meet certain criteria and account for collision events.

2021-07-11 14:35:54 +02:00

initialPositionSampling.m

Added a switch to change between 2D and 3D MOT cases to allow for this code to be expanded and generalized in the future.

2021-07-11 06:36:49 +02:00

initialVelocitySampling.m

Moved calculations of capture velocity, cut-off, reduced Clausing factor and reduced flux to here, changed the condition for the velocity sampling to correctly sample from the normalized probability distributions.

2021-07-11 06:40:19 +02:00

magneticFieldForMOT.m

This is a class for simulating the capture process for Dy atoms in the 2-D and 3-D MOTs, including the dynamics from the push beam and slower beams.

2021-06-29 15:44:28 +02:00

MOTSimulator.m

Change of variable names, new properties included along with their getters and setters, increased limit on number of trajectories to be computed, corrections to formulae calculating saturation parameters and average velocity.

2021-07-11 14:34:19 +02:00

reinitializeSimulator.m

Cosmetic changes, a few new additions.

2021-07-11 14:41:40 +02:00

runSimulation.m

Shifted some calculations in to other functions.

2021-07-11 14:46:19 +02:00

setInitialConditions.m

Cosmetic changes only.

2021-07-11 14:42:09 +02:00

solver.m

Cosmetic changes only, changed a few variable names, dynamical quantities for all atoms across the full simulation time are now returned instead of just the final values.

2021-07-11 14:43:36 +02:00

velocityDistributionFunction.m

Correction of expression.

2021-07-11 14:44:43 +02:00