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Final edits due
Introduction
This newsletter is packed to the brim. This edition is extra special as we have for the first time a section for LCLS IT recording some of the improvements and maintenance activities of Omar's team!
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The newsletter is being released approximately 1 week later than we originally planned due to the SLAC-wide safety stand-down on Wednesday 5/4. While the circumstances prompting the stand-down are not good, the outcome of the activity was positive.
ECS took a bit of time to refamiliarize ourselves with the WPC and Electrical electrical safety aspects of our work. We also spent some time collecting data from the division on (over)work, including consecutive hours, and days workworked, as well as peak number of assignments in an effort to better understand the issues Mike Dunne mentioned in his all-hands.
ECS would like to take a moment to emphasize the importance of EEIP at LCLS and SLAC in general and remind anyone everyone reading this newsletter to look into what EEIP is, and how to make sure your equipment is compliant. You can learn more about EEIP here: https://slacspace.slac.stanford.edu/sites/pcd2/eeip/default.aspx
EEIP is everyone's responsibility.
LCLS-II-HE update
The ECS team continues making progress, advancing instruments’ designs, and ramping up efforts with greater engagement from instrument’s leads. The goal for the remainder of FY22 will be to refresh the overall cost estimate as recommended by the committee, while at the same time remaining committed to advancing the design maturity of all Experiment control systems to Preliminary Design Review (PDR) (60%) level. The PDR for controls is slated for August of 2022.
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More controls requirements were developed in March and April. These requirements were specifically focused on CA EPICS network size, DAQ bandwidth, EPICS archiver size and reliability, as well as the logging systems. High-level requirements are being developed as ConOps are updated/ generated. If there is any particularly important requirement of the control system, high-level functionality please let Alex Wallace or Jing Yin know.
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Extensive documentation on the process of making a new pcdswidget was provided as well as scripts for testing widgets in development.
Position Lag Monitoring
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Issues with mechatronics in production
A streak of issues with motor driven actuators in March and April ate a significant amount of beamtime. Many of these issues could be classified as stalls (spurious and real), where a motor is commanded to move and its actuator readback indicates no movement has occurred within some time. Stalls can occur for a variety of reasons, real physical obstruction, or improperly set motor or protection parameters.
In an effort to track and reduce such issues (and motion system issues in general) we built a new Grafana dashboard using data from our logging system (L2SI systems) to organize and track all of these motion system issues in one place. The dashboard can filter between different kinds of motor issues, and specific devices as well as give us a clear view of the most problematic parts our system.
We also met with our Mechanical Engineering counterparts and began a long-term collaboration on motion systems in general together. We plan to use this collaboration to create better design recipes for LCLS mechatronics, and study and correct pervasive issues in deployed systems. We will supply updates from this work as it develops.
If you have any questions about this section please contact:
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The team won Best Project this year at the CSUC design expo (May 13th), competing with ~20 other project teams from the program. The team will also present their project this summer in Dallas TX at a national competition for engineering capstone projects.
L-R Anthony Aliotti Mitchell Cabral Clarice Rucklos Jasmine Nguyen |
The team in front of their winning project and display showing off the robot, their SLAC affiliate badges, and the numerous iterations on the 3D printed camera mount. |
The team hosted a local Girl Scout group and used the collaboration project to demo robotics. |
For the past five years LCLS departments (SED and ME) have sponsored projects with the Mechanical/Mechatronic Engineering departments of CSU Chico for their engineering degree capstone. Each year the collaboration project offers a chance for LCLS to develop prototype concepts, or even to offload a manageable portion of work to a team of 4-5 students and a faculty advisor (for a nominal fee + M&S). More importantly these projects offer us a chance to discover talented candidates that we can hire. If you have an idea for a project, please contact Alex Wallace for details (or if you want help setting up a collaboration with your school). On a final note, this year we are excited to announce that we hired another student from the collaboration project, Mitchell Cabral. He will join ECS as a control system integrator in June.
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