David Hertzog

“…This was our second experience testing detectors there (the previous one in 2010). Based on some of the problems we had last time, I was aiming our group toward the yet-incomplete SLAC beam to get electrons. But, we took a chance and I was simply amazed how excellent the beams and conditions are now. This starts with the support level and the professional nature of the facility. The accelerator ran “like a battery” so we were busy on every shift (save for one 11 h period). The operators delivered many energies and flux rates. The energy files were simple to load and the operators could adjust the beam focus per our oral requests and they could change the average flux. When we arrived, the support was organized and efficient, including: tables, racks, the remote moving table, tools, connectors, labels, a prep bench for repairs, expert assistance with gas and safety, technicians who built custom supports “on the fly”, a working Cherenkov tag, the amazing laser alignment system, the patch panels, and on and on. Aria has the place humming and I would say it was well beyond what I had expected. We got great data.

Test beams are not only for distant technologies and detector R&D. Prepping detectors to make informed choices for major experiments is vital and tests beams are the only way this can happen. I’m not sure if there is enough appreciation of how important such a facility is to experimental physics (I am sure you two know!). Others should learn about it and we will proudly broadcast our positive experience. ”
On behalf of the group of us that ran there, from 6 different institutions, we want to thank you for your role in developing and maintaining the FTBF.
David Hertzog
Co-Spokesperson, g-2
University of Washington