| Thursday, May 1, 2025 |
| A New Experiment to Search for QCD Axions as Dark Matter | |
| Lyman Page, Princeton University | |
| Event Type: Special Seminar | |
| Time: 12:30 PM - 1:30 PM | |
| Location: 726 Broadway, 940, CCPP Seminar | |
| Abstract: *This is a special and informal seminar. Pizza will be served* I'll briefly review the motivation for axions as a candidate for dark matter and then describe progress on PXS, the Princeton Axion Search. Like the pioneering ADMX experiment, PXS is based on Sikivie's holoscope concept. It complements ADMX by targeting the mass range 0.8 to 2.1 ueV, just below ADMX's excluded region. PXS is a "table top" experiment that will use a large bore conduction cooled magnet led by PPPL to produce the magnetic field and a traveling wave parametric amplifier developed by JPL to read out the <100 mK microwave resonator that is immersed in the magnet field. The experiment is well underway with many subsystems under test. | |
| Exploring the Birth of the Universe with the CMB | |
| Lyman Page, Princeton University | |
| Event Type: Physics Dept Colloquium | |
| Time: 4:00 PM - 5:30 PM | |
| Location: 726 Broadway, 940, CCPP Seminar | |
| Abstract: We will give a broad overview of the temperature anisotropy and polarization of the cosmic microwave background (CMB), for those who are not cosmologists, to motivate why it is a foundation for the standard model of cosmology. The model is surely not complete and there are a number of open questions such as “are there measurable gravitational waves from the Big Bang?” To address this, we describe a new experimental search for these primordial gravitational waves with the Simons Observatory. | |