Dear AMMRL,
Thank you very much to those who have responded to my inquiry on 'Aging Magnet'. Thanks to Xiangjin Song, William Jarrett, Kemper Sebastian, Gerd Gemmecker, Bob Berno, John Davidson, Anklin Clemens, James Hook, Robin Stein, Tom Pratum, Ta-Chung Ong, Philip Dennison, Huhn Stephen, Wright Marcus. It is good news that there are many old magnets (20+ years) still in working condition. In short summary, there is no reason to decommission the magnet if the magnet does not show any sign of malfunctions such as increased He consumption, drift, problems with shim. One can continue to use the magnet until it shows sign of "aging" and the cost of repair is higher than maintaining the system. In the meantime, one should also start making plan to acquire a new one or upgrade to high field.
I agree with all of you. There is nothing wrong with 300MHz. However, all users prefer high field. So, we will have to start saving and plan for an upgrade while the 300MHz is still in working condition. Happy Thanksgiving to all of you.
Best regards,
Hla Win-Piazza, Ph.D.
Western Washington University
NMR Facility Manager
Organic Lab Coordinator
360-650-2261
Received on Mon Nov 19 2018 - 07:09:24 MST