Photos

R&D for Phase III and beyond (2019-present):

In the Project 8 laboratory at Mainz, a test stand collects data on the conversion of hydrogen molecules into atoms. Hydrogen molecules enter the top of the setup near the gauge labeled PG5 and are broken into atoms by the glowing atom source seen through the round window; the atoms then travel to the lower part of the setup where a detector counts them. Sep 2020.

A test stand at University of Mainz. It collects data on the conversion of hydrogen molecules into atoms. Hydrogen molecules enter the top of the setup are broken into atoms by the glowing atom source seen through the round window; the atoms then travel to the lower part of the setup where a detector counts them. Sep 2020.

Alec Lindman, a doctoral candidate working on the Project 8 neutrino mass experiment with Prof. Sebastian Böser's group in the PRISMA+ Cluster of Excellence, is shown installing a new pressure gauge on the Mainz atomic hydrogen test stand. Jan 2020

Alec is installing a new pressure gauge on the Mainz atomic hydrogen test stand. Jan 2020

Protected from air inside an ultra-high vacuum chamber, a white-hot tungsten tube heats hydrogen molecules until they break apart into atoms. Mainz, Sep 2020

The green speckles in this image are reflections of a laser beam used to align a source of hydrogen atoms with a mass spectrometer that detects the atoms, as seen through a window of an ultra-high vacuum chamber. Dec 2019

The green speckles in this image are reflections of a laser beam used to align a hydrogen atom beam with a mass spectrometer, as seen through a window of an ultra-high vacuum chamber. Mainz, Dec 2019

This is a mass spectrometer that can tell the difference between hydrogen atoms, hydrogen molecules, and other gases. The mass spectrometer first gives an electric charge to a beam of atoms and molecules, separates the lighter atoms from the heavier molecules, and then collects the atoms in a counter below this image. Jun 2021

Hydrogen cracker test stand at UW. Nov 2019

MIT dilution refrigerator, at 20mK. Investigating amplifiers that exploit quantum properties of superconductive materials to reduce noise. July 2021

The actual amplifier consists of a transmission line in the dark square. You can distinguish a snake-like structure, consisting of 2000 unit cells containing Josephson Junctions and phase matching elements. The radio-wave signal travels through these while being amplified through mixing with a stronger wave, called the pump wave.

Josephson traveling wave amplifier. It consists of a transmission line in the dark square. You can distinguish a snake-like structure, consisting of 2000 unit cells containing Josephson Junctions and phase matching elements. The radio-wave signal travels through these while being amplified through mixing with a stronger wave, called the pump wave. July 2021

R&D for Phase III Free-Space CRES demonstrator (2020-present):

Experimental setup at Yale. Feb 2021

Two antennas facing each other. March 2021

Close-up of microwave-transparent IR insulation. April 2021

Mirror selfie with microwave-transparent IR insulation. April 2021

Prototype of a slotted waveguide antenna. April 2021

Phase II experiment (2018-19)

The Project 8 neutrino mass experiment has pioneered a new energy-measuring technique, Cyclotron Radiation Emission Spectroscopy; the apparatus shown here is the second that the collaboation has built and the first to use tritium. The decay of tritium gas provides direct information on the mass of the neutrino, and Project 8 is pursuing a collaborative, phased approach to building the world's most sensitive neutrino mass experiment. See photos below for work on constructing, upgrading and operating this experiment in 2018-19.