The Kratos-SUPRA has been restored to operational in most common modes (XPS, depth profiling). During this maintenance period, the x-ray gun filament was replaced, the low count rate issues was fixed by cleaning out the restrictors on the cooling water lines. Currently, the pressure of SAC is at ~2E-09 torr. A long bake-out of the system is planned and the schedule will be updated. We recommend to keep your “degassing” samples in the loadlock chamber to pump down until the pressure reaches mid E-07 torr, before transferring to SAC
I am proud to be part of the team at LEXI, IMRI and UCI to work and collaborate with you on this machine and other projects. Please do not hesitate to contact me with any issues, problems and questions related to your experiments and applications using the instrument.
Ich Tran
We baked out the whole system during the Thanksgiving weekend. The SAC’s pressure is really good at ~5E-10 torr. All XPS mode is functional with normal count rate restored. Please remember keep your samples in the loadlock a bit longer to save the UHV condition of the SAC (also save your time in long run and help getting good quality data).