Category: Ra EDM
Towards a More Sensitive Measurement of the Atomic Electric Dipole Moment of Radium-225 – APS March Meeting 2020
Although the APS March Meeting was cancelled this year, you can view Roy Ready’s presentation. The abstract is here: http://meetings.aps.org/Meeting/MAR20/Session/P01.2 The slides are here: https://absuploads.aps.org/presentation.cfm?pid=17142 The presentation is here on YouTube:
Did you find out about the award?
Click here for MSU College of Natural Sciences writeup about Roy’s SCGSR! Click here for MSU Today writeup about Roy’s SCGSR! What does it mean to you, both personally and professionally, to receive this award? From a professional standpoint I’m thrilled to be working with and learning from world experts in atomic and nuclear physics. My advisor, Dr. ...
Roy Ready receives a DOE SCGSR Award!
Roy Ready has been selected to receive the U.S. Department of Energy (DOE) Office of Science Graduate Student Research (SCGSR) award for the proposed research project, “Towards a More Sensitive Measurement of the Electric Dipole Moment of Radium-225”, to be conducted at Argonne National Laboratory (ANL) with our collaborator Matt Dietrich. Roy was selected is ...
The Great Bipolar High Voltage Power Supply Installation of 2017
What is a bipolar power supply and why do we need it? In the Ra EDM experiment, a high electric field flips sign on a roughly 1-minute cycle. The direction of the field is changed by reversing the sign, or polarity, of the voltage being applied across the “hot” cathode (field is defined by positive-to-negative charge direction). ...
Farewell Andy & Courtney! (2017 MSU REU Poster Session)
Andy and Courtney have completed their REUs with the group this summer and presented their results at the REU poster session. Andy developed a machine vision system for characterizing the HV electrodes used for the Ra EDM experiment. This optical method is high resolution (10 microns), high precision (repeatable), real time (can be performed ...
FRIB Day 1 Science Workshop: Fundamental Symmetries
Today I will present a talk with Jon Engel on FRIB Day 1 Science Opportunities for Fundamental Symmetries. This talk is part of a workshop that is a satellite meeting of the 2017 (US) Low Energy (Nuclear Physics) Community Meeting which is being hosted by Physics Division at Argonne National Lab. The main thrust of the talk ...
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 ...
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 ...
SPINLAB @ MSU 
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