The Advanced Photon Source
a U.S. Department of Energy Office of Science User Facility


The upgrade of APS liquid nitrogen distribution system (LNDS) is almost complete, making it more robust than it has ever been and further improving the availability of x-rays to APS users.
What are user agreements? How do they affect users? What are the differences between the types of agreements? How are agreements administered? This information will help answer those questions.
These Director’s Corners are usually an opportunity to share good news (and there is plenty of that; see Stuart Henderson’s APS Upgrade report for news on BESAC prioritization of the Upgrade). But this time I would like to concentrate on safety, because nothing – nothing – is more important than the safety of our users, resident users, and staff.