I'm currently in a REU program... the whole thing involves an ion accelerator. Currently, the vacuum system needs come tweaking, and my job is to play around with the program called "vaktrak" (coded by a physics... to calculate pressure profile for a lattice structure), and find what is the best way to improve the vacuum system. Sounds exciting? not really, otherwise I wouldn't be typing here. I did a lot of guestimation when inputing the data into the program, and I'm not even sure if the results that I am getting are correct or not... I doubt any of those guestimation and my playing-around-with-the-program would be taken very seriously. so, basically, I feel that my work here is pretty much... not very useful. would've been nice if I can gather data, interpret them, and make some sense out of physics. does anyone else feel the same way? or are you guys doing some more exciting projects?