First Steps Towards Two-Photon Magnetometry Using Polarized Noble Gases

We are collaborating with Skyler Degenkolb and Prof. Tim Chupp from the University of Michigan on demonstrating two-photon magnetometry using nuclear-spin polarized noble gases. Spinlab happens to have an intense and tumble UV laser source needed for this project. The first step is to find the UV two-photon transition in gaseous Xe. Shown below are ...

Debugging An Obscure Non-Fatal Failure Mode for a TMP 50 Turbopump

While testing the new TMP 50 (S/N31001349549) on the HV setup, it failed three times. All three times, the TMP was started at a pressure of 4E-3 Torr or below and failed about 4 minutes into the acceleration at pressures of 6E-5 Torr or below. Before the last attempt, we ran the roughing pump with the gas ballast valve ...

The Great Laser Installation of 2016

The Spinlab tunable lasers from M-squared were installed this week. The GRUVY laser provides tunable single frequency laser light from 250-300 nm, 500-600 nm, and 700-1000 nm. The BLUREI laser provides tunable single frequency laser light from 350-500 nm and 700-1000 nm. Thanks Steven and Daniel!

The Great Laser Table Installation of 2016

Spinlab has two nonmagnetic optical tables fabricated from 304 and 316 stainless steel from TMC. They were installed on the morning of April 23, 2016. These tables provide a very stable and vibration-isolated platform for mounting lasers and performing atomic physics experiments. See how the 12 ft by 4 ft 3000 lb optical table was ...

Colloquium @ Texas Tech University

Testing Time-Reversal Symmetry Using Lasers, a Magic Room, and Pear-Shaped Nuclei Experimental tests of fundamental symmetries using nuclei and other particles subject to the strong nuclear force have led to the discovery of parity (P) violation, the discovery of charge-parity (CP) violation, and the prediction of a hypothetical particle called the axion, which is currently ...

Colloquium @ University of Toronto

Testing Time-Reversal Symmetry Using Lasers, a Magic Room, and Pear-Shaped Nuclei Experimental tests of fundamental symmetries using nuclei and other particles subject to the strong nuclear force have led to the discovery of parity (P) violation, the discovery of charge-parity (CP) violation, and the prediction of a hypothetical particle called the axion, which is currently ...

Tenzin Officially Starts His Thesis Work on Ra EDM

Today Tenzin passed his first PhD Committee meeting. His thesis project will be an improved measurement of the EDM of Ra-225. He will be moving to Argonne to work with our collaborators on improving the atom detection efficiency as well as other upgrades. Congratulations!  

Major Renovations to Spinlab Complete

Most of the major renovations to Spinlab are complete! This included adding additional clean power and standard power, cable trays, casework, and a sink & eyewash among many other things. Today we celebrated with a fancy cake with fancy cake decorations. We are now waiting for our optical tables and tunable lasers!

Spinlab Group Pictures

The ground has grown significantly over the last year with the addition of Jennifer Wenzl (postdoc), Dustin Frisbie (grad), Kristen Parzuchowski (DRS Scholar) on the Single Atom Microscope project and Tenzin Rabga (grad), Roy Ready (grad), and Steve Fromm (DRS Scholar) on the Ra EDM experiment.  

Assembly of HV Electrode UHV Chamber

One of responsibilities for the Ra EDM experiment is to test and condition high voltage electrodes. The goal is to achieve an electric field that is at least three times higher than what we’ve achieved in the past. This should improve the statistical sensitivity of our experiment by at least a factor of three and ...

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