Category: weekly win

Calibrated Spatial Profile Measurements of Extended Light Sources

The purpose of SAM is to image individual atoms that fluoresce upon excitation with a light source that we choose based upon the properties of those atoms. In the past, we’ve made the simplifying assumption that the spatial profile of a light source is uniform, but, for real extended light sources, this is not true. ...

The Chunk Code: HV Stability During an EDM Simulation

This Weekly Win is a celebration of my high voltage ramp test analysis suite, AKA Chunk Code. Let me break this down into ‘chunks,’ if you will: Here is a plot of a high voltage ramp test the Spinlab RaEDM crew performed on 7-5-2017. The ramp test simulates the conditions that the electrodes will be subjected to during a real permanent EDM experiment. ...

Stable & Repeatable Ramping of 170 kV/cm Electric Field

This week we hit a milestone by successfully running a ramping simulation to 170 kV/cm for ~ 1 hr. This is approximately 15% higher than the goal we set out to reach and more than double the electric field that we were able to achieve during the Ra EDM data run two years ago. Before ...

Laser Scanning of Yb Atomic Beam Fluorescence

The Single Atom Microscope team, led by Kristen and Roy, is taking large steps towards a proper calibration of Yb atom number density in solid Neon. Most recently, the atomic beam fluorescence measurements have incorporated laser frequency scanning. At a stable atomic oven temperature, these measurements are used to determine the Yb atomic beam flux ...

Bake of the Ne Gas Handling System

This week, we completed a setup for a vacuum bake. Vacuum bakes are used to remove tiny impurities (specifically water) from a vacuum system. This is done by heating the vacuum components, which makes any water bound to the walls of the stainless steel detach at a faster rate. In this process we use heating tapes rated for conductive ...

High Pressure Rinse of High Voltage Electrodes

This weekly win is about removing sub micron-sized particulates in the air we breathe from the Ra EDM electrodes, whose electrical performance can be degraded by the presence of these particulates, with a process called the high pressure rinse. The high pressure rinse is a critical step in decontaminating electrodes that we’ve adopted from accelerator science, where it’s been shown that ...

Upgrades to the Noble Gas Purification

In recent weeks, the SAM team has made a few upgrades to the Ne gas handling setup. For single atom detection, it is essential that other fluorescence sources are minimized as much as possible. Impurities in the neon film where the Yb and Mg atoms get embedded could act as fluorescent background sources. In addition, ...

Evan wins First Place in the UURAF Poster Competition!

Being able to take part in UURAF was a great opportunity to learn how to present research in a professional environment. Probably the most useful part for me was the preparation of the poster. Having never made a scientific poster before, Jennifer was very helpful in giving me advice. By the time I presented my ...

Laser Trap Monte Carlo Simulation

We have upgraded the Laser Trapping Monte Carlo to include a laser chirping feature.  This new feature allows for the addition of a linear frequency chirp to be added to any of the lasers in the simulation.  This is one of the first needed steps in being able to simulate slowing Radium-225 using its blue ...

Magnetic Field Map of Spinlab

This week I completed the Spinlab Magnetic Field Mapping Report, a 31-page LaTeX document outlining the motivation for mapping the magnetic field of the Spinlab, the process for building the components necessary for completing the mapping, and results from various mappings from 2016. This document will be very important for completing any future B-field mappings, especially once I ...