Published Date
Accelerator Operations and Engineering
Accelerator Operations
User beam as scheduled. Lost 18 hrs of beam time on Tuesday due to Booster White circuit problem. During much of the time, a coasting beam was in SPEAR and available to users. Investigation of root cause is ongoing.
Beam Lines and Development
Beam Line Systems Report
The BL4-1 and old BL10-2 monochromators are both being refurbished in the vacuum shop.
Planning is underway for summer SPEAR downtime activities including Booster vacuum chamber and ion pump replacements, a major booster transformer replacement, and various jobs in SPEAR.
Planning is underway to upgrade the BL13 PGM grating movers.
The BL7-3 hutch expansion is scheduled for this summer.
A power outage is scheduled for Building 50 from June 9th through the 13th.
Calendar
SSRL Quadrennial BES Review – June 10-12
2025 SSRL Beamline Review - September 8
2025 SSRL SAC Meeting - September 9-10
2025 SSRL/LCLS Users Meeting - September 21-26, 2025 (Onsite)
Previously Reported
Windows 11 upgrade
Microsoft is ending technical support and security updates for Windows 10 in October 2025.
Without security updates, computers running Windows 10 will not be permitted on SLAC networks.
All SLAC machines must migrate to Windows 11 by Aug. 29, 2025.
More information on Windows 11, including visual differences can be found on this KB article
Step by Step instruction on how to trigger the upgrade
Downloading & Installing in the background: up to 3 hours (PC usable)
Restart & Upgrade: up to 1 to 2 hours (PC not usable)