July 19th- Day 16

Roughly perfect.


We went to XOS to work on the new optic, but upon walking into the building, Alex told us he had taken apart our new set up. He needed to test another optic and figure out why all the optics are turning out bad. So far the one we had was defected and another was broken. They aren't having very good luck making optics as of recently apparently. We went through and wrote down all the information we could get about the equipment and took pictures of the things we hadn't before. We got knife-edge scan data that we will plot in matlab in both the x and y directions. We took spectra during the knife edge scans, but they didn't turn out how we wanted. Then we took 100 second spectra with and without the lead tape so you can see the effect the tape has on the x-rays and what the detector picks up. The one without the tape shows Cu K beta, which is minimized on the spectrum with the tape barrier in place. With the data, he showed us a new program, Origin. It is like excel and using it, he plotted the data from the spectrum scan. He also showed us how to plot it in excel and tricks for importing data in various programs. He explained all the different peaks and what was causing them. This would be the energy scan. Alex also had us calculate what the energies should be using the channels the peaks were located at. Using these energies we made another graph (energy vs. channel) which produced a linear line. The equation from this line allowed us to change the x axis from channel to energy on our spectrum graph. We have all the data in excel from XOS and will enter it all into matlab between the two of us. We then took spectra for intensity to calculate flux without the crystal with a distance of 400mm.