Gamma rays and lightning particles

Students from UCalgary’s physics and astronomy department design and build a measurement device for a NASA-backed space research project.

By Erin Guiltenane
September 2015

Gamma ray detectors, high-energy particles, and a four-million cubic foot stratospheric balloon — this isn't a description of a UFO sighting over the New Mexico skies. In fact, the massive balloon in question is very familiar to a group of students in the Department of Physics and Astronomy (PHAS).

The students built an intricately crafted instrument which was one of 12 devices affixed to the balloon and launched as part of a collaborative space research initiative out of Louisiana State University (LSU) in September.

Under the leadership of Chris Cully, assistant professor in the physics and astronomy department, the Calgary arm of the Student Organization for Aerospace Research (SOAR) conceived of and built the device. It's equipped with a gamma ray detector, a camera, and a radio to detect lightning. The payload was attached to the balloon, which had a NASA receiver on board.

“We’re looking to detect high energy particles in lightning — something that has been theorized for 10 to 20 years, but nobody has really looked into it yet,” explains Candice Quinn, a student and summer research assistant in PHAS and SOAR club president. 

"We’re looking to detect high energy particles in lightning — something that has been theorized for 10 to 20 years."


Students among first Canadian representatives in American-based project

The University of Calgary contingent was among the first group of Canadian university representatives to contribute a device to LSU’s High Altitude Student Platform (HASP). By providing a space test platform through a partnership with the NASA Balloon Program Office and the Louisiana Space Consortium, HASP encourages student research and the development of student satellite devices and other space-engineering products.

Creating the device was a collaborative process which took several months to put together, and one the students had true leadership over.

“Most of the decisions were made by us,” says student Cooper Duffin. “Chris was as hands-off as possible.”

The students led every aspect of the device’s creation, from building its software and firmware to testing it in a vacuum chamber to make sure it could withstand the stratosphere’s extreme temperatures, which can range from -50 to over 60 C. As another student Marc Russel explains, “the stratosphere has one of the nastiest environments you could put anything into.”

Successful flight provides good research data 

Several members of SOAR travelled to New Mexico for launch day, where the four-million cubic square foot, 2,000-pound balloon was launched from the Columbia Scientific Balloon Facility base in Fort Sumner.

“We were hoping for a flight that flew the full flight time and that we'd have lightning within atmospheric attenuation proximity,” says student Robin Williams. “The flight was a record long flight that went nearly twice as long as expected and flew over storms almost the entire time.”

Despite being slightly longer than anticipated, the flight was successful. After just over 23 hours, NASA sent the command to terminate the flight, and the balloon came down over the New Mexico desert. The research experience, and the opportunity for collaboration and camaraderie was appreciated by the group.

"The major takeaways will hopefully be good research data, as well as a hope for future potential opportunities for University of Calgary students to get more involved in aerospace, research, and opportunities to meet industry experts,” says Williams.

“I am really proud of the students’ work,” says Cully. “They put together a really great instrument.”



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