Fermilab feature

A minute with Maria Barba

Meet Maria Barba, a cryogenic engineer at Fermi National Accelerator Laboratory whose work helps keep systems that support the testing of critical particle accelerator components running smoothly.

I’m an engineer with the Cryogenics Division, and I help lead a small team that keeps our cryogenic facility running in Industrial Building 1. Our division is split between engineering and operations, and we maintain and operate systems that support testing superconducting magnets and cavities, which are essential for particle accelerators. As a cryogenic engineer, I supervise and participate in cryogenic operations, coordinating with a dedicated team of four full-time operators who work in two shifts to ensure 16-hour daily coverage. I review the operating procedures, prepare any engineering upgrades and update our documentation related to the facility. Our team is dedicated to keeping the system stable, monitoring alarms and maintaining a steady supply of liquid helium (chilled to below minus 450 degrees Fahrenheit) to the system.

Maria Barba is a cryogenic engineer at Fermilab. Credit: JJ Starr, Fermilab
Maria Barba is a cryogenic engineer at Fermilab. Credit: JJ Starr, Fermilab

I have been at Fermilab for three years. My background is in cryogenics across various applications — from small cryocooler systems for space-based superconducting magnets to working at CERN on liquid argon detectors. I came to Fermilab to focus on large-scale cryogenic systems, particularly industrial liquid helium systems.

At IB1, we operate two large cryogenic liquefiers that produce liquid helium 24 hours a day for testing superconducting magnets and cavities. IB1 is unique because we operate both an old, manual liquefier and a newer, automated one. Making these two systems work together is a constant challenge. We consume all the liquid helium we produce, so efficiency and leak prevention are critical. The helium cycle is complex: we compress gaseous helium, liquefy it, store it in dewars, distribute it for tests, and then recover the boiled-off gas to start the cycle again.

There are very few places in the world like Fermilab. Being surrounded by experts from so many different fields is incredibly enriching. It’s a privilege to work in such a collaborative and technically advanced environment.

I love kayaking! Illinois is a great place for it, with access to beautiful rivers and Lake Michigan. It’s a seasonal activity, so I try to squeeze in time to kayak two times a week.

Fermi National Accelerator Laboratory is America’s premier national laboratory for particle physics and accelerator research. Fermi Forward Discovery Group manages Fermilab for the U.S. Department of Energy Office of Science. Visit Fermilab’s website at www.fnal.gov and follow us on social media.