国产AV

Above: John Ringler shows a component of a particle detector known as a scintillator. He and his colleagues are spending this week perfecting the device before it goes up in a high-altitude balloon during the eclipse. 

A unique project conceived and designed by 国产AV Physics and Astronomy students will be aboard a NASA high-altitude balloon that will be launched during the solar eclipse Aug. 21.

Seniors and military veterans Josh Fender, Justin Morse and John Ringler will spend the first day of fall classes witnessing the launch from Camp Guernsey in southeastern Wyoming, which is in the path of the full eclipse. From the ground, they鈥檒l monitor their specialized detector that, for the first time during a total eclipse, will measure muons, particles created from collisions with cosmic rays in Earth's atmosphere. 

鈥淚t鈥檚 currently believed that most of these cosmic rays are coming from extra solar sources, so everything besides the sun,鈥� Ringler said. 鈥淒uring the solar eclipse, we鈥檙e going to look for a change in depth when there鈥檚 line-of-sight blockage of the moon over the sun. Do we get different data? Are most of these (cosmic rays) coming from outside the sun? That鈥檚 what we鈥檙e trying to answer.鈥�

The seniors have spent the past 18 months, and copious amounts of time in their Ross Hall lab, perfecting the device.

鈥淲e鈥檝e put a lot of time to try to figure out how to make this all work and just get reliable data back,鈥� Fender said.

Their tests have included two launches 鈥� one reaching 98,000 feet 鈥� vacuum tests of their air-tight enclosure, using a 3D printed frame, to ensure there won鈥檛 be electrical shorts as the balloon reaches its expected apogee of about 100,000 feet. They also made several refinements to the enclosure containing the device and the micro SD card recording the data to protect the components from a hard landing. On the way down, the balloon can reach a speed of Mach 1 before the parachute deploys, Fender said. 

An additional challenge: the payload itself had to stay under NASA鈥檚 required 1.3 kilograms (or 2.8 pounds) 鈥� requiring the students to shift from using PVC to a lighter plastic.  

鈥淭he students have done a very good job of not only dealing with the challenges of this but also working with actually trying to improving their designs and trying to come up with better ways to do this,鈥� said Assistant Professor Charles Kuehn, who advises the team, along with colleagues Cynthia Galovich, Matthew Semak and Robert Walch. 鈥淲e try to be as hands-off as possible. We鈥檙e there for support for ideas for things like that, but for the most part we really want the (message to) students (to be), 鈥榯his is your thing.鈥欌�� 

Following the launch, the students will compile results, write an academic paper and will be able to present their findings at next year鈥檚 American Astronomical Society meeting, which happens to be in Denver. They鈥檒l also publish a how-to guide for high schools and others interested in pursuing such projects on a small budget.

鈥淭his is the coolest stuff in the world,鈥� Ringler said. 鈥淲e get to play around with electronics, we get experience doing engineering of electronic and structural circuits and we get to measure things people haven鈥檛 measured before. It鈥檚 just doing science.鈥�

Related: Viewing Information on the solar eclipse

Related: Podcast with Charles Kuehn on solar eclipse,
and how his students are going above and beyond the field of atmospheric research