Category: Ra EDM

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 ...

Fundamental Symmetries of the Early Universe and the Origin of Matter

This week I hosted Prof. Michael Ramsey-Musolf, Director of the Amherst Center for Fundamental Interactions,  who was visiting from UMass.-Amherst to give the MSU P&A Colloquium on “Fundamental Symmetries of the Early Universe and the Origin of Matter.” Abstract: Explaining why the universe contains more matter than antimatter remains an open problem at the interface of particle ...

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 ...

HVPlotter in Python

Over the last week, I have developed a program in Python for quickly plotting data made from the exported data from the jhv4 labview program. The program has the user select which file they want to make plots from, and then opens the attached window. The user will then select the x-variable and y-variable they ...

Conditioning of HV Electrodes

This week we successfully approached the point of electrode conditioning with our high voltage system. In previous attempts, we were forced to stop short of reaching a high enough voltage due to cable failure–22 kV was the highest we could get. On Tuesday, we were able to reach 27.9 kV on our 30 kV power supply when our picoammeter ...

Safety Interlock for HV Supply

This week is all about our electrode test station. We’ve made significant safety improvements and improvements in the sensitivity of our high voltage measurements. The first is the installation of our fancy new Interlock Chassis, which allows us to remotely shut down the power supply. It also automatically cuts power to the high voltage power supply in the event that one of ...

E-Field of 110 kV/cm

This weekly win post is for the win awarded on 10/10/16. The win that week was awarded to Roy Ready’s team, working on the Ra EDM project. The RaEDM team  successfully tested the high voltage system, and reached a stable operating voltage of 22 kV. One of the goals  of the project is to reach the ...