WIP
Locked for edits: 9/30
Published: 10/3
SC Readiness
Supported Device List Update
We officially completed the epic to update the SDL after nearly a year. Please refer to the SDL for system design and support.
One item of note is the status of Micronix piezo actuators and drives. Due to some concerns over reliability, these drives have been marked as EOL, meaning they are not approved for new designs. Existing configurations are still supported, as are purchasing replacements for existing configurations. For more information contact Tyler Johnson .
TXI installation for RP air attenuation test
Soft-limit display issues
Auto-pitch on the offset mirrors
Better power supplies for 901
Federica Murgia For safety reasons, all the DRL power supplies in building 901 have been replaced by desktop power supplies.
The new 24V desktop power supplies are currently stored in office 113 F, and they can be used only for the racks in building 901.
Each power supply comes with a power cord and a 24V power supply cable 3ft long (they are all labeled).
Note: each power supply can handle more than one PLC, but the current range is 0 ~ 11.67 A.
You can find more information about the first power supply inspection and the new power supply on this confluence page.
Please, update the equipment track sheet if you take one of them.
Improvement of python environment testing
Imaging systems and network impact analysis
Ion Pump QPC Controller Issues, Improvements Incoming
Mitchell Cabral We contacted Gamma Vacuum regarding issues with long-run QPC controllers and their noisy signals in August. This led to a meeting with Edwards Vacuum, their partner company, where we discussed a temporary solution to update the firmware with an unreleased version. This unreleased firmware was also being used to solve similar issues in Germany as well as the Accelerator Department. In October, we updated the firmware on B940:009:R03:PCI:01 inside of the FEE. This improved the stability of the pressure report on two of the three working channels, however there was still some variance in the third channel.
A second ongoing issue that was not solved with the firmware update, is the inability to run all four QPC channels at once without error. Even so, another problem was discovered where even three, or two channels cannot be run stably, so we must replace the controller. These topics were discussed with Edwards as well, but the fix is replacing the CPU for the former, and uncertain for the latter. All QPCs with the 4-channel error must be sent back to Edwards so that they can replace this chip then sent back, but this is not possible with supply-chain issues and critical dates for beam. We are pushing to get new QPCs that were ordered last year to be prioritize in their backlog so that we can replace these controllers and send the defective ones out to be fixed.
In addition, there have been multiple problematic ion pumps on the HXR line that have been delivering lackluster vacuum levels for months; The worst of which even had to be replaced at one point. After a long RMA process due to the aforementioned supply chain issues, the controller for all of these pumps was swapped for a freshly RMA'd one. While the pumps are able to stay on consistently now, they are still delivering lackluster vacuum levels. They have been Hi-Pot tested and the worst performing pump was determined to fail the hi-pot test. This debugging process is ongoing.
MEC-U
LCLS-II-HE
The HE Controls team continues to make significant progress towards the Preliminary Design Review with increased engagement from the team. This is also reflected in increased earned value reports. Efforts for the refreshed FY22 M&S cost estimates are still ongoing with most of the systems nearing completion. The team commenced with their preliminary design readiness review activities in preparation for the upcoming reviews. Design progress towards the Preliminary Design Review is on track with steady engagement from the team. Activities for 3B reviews and drilldowns preparations have also started.
Machine Configuration Database Project Update
Laser, Beam Transport System (BTS)
EPICS Collaboration
ATEF
LY45
LY45 (CVMI with complicated new configuration) was delivered successfully. Control did lots of work including adding new manipulator in the beam line, moving two piezo motors from LAMP to CVMI, redefining CVMI six motion axises, rearranging CVMI vacuum design. All works very well and TMO decides to keep the new manipulator into the beam line and adding two more piezo motors into CVMI gas jet later because the good experience of LY45.
Lightpath
Lightpath is coming along nicely. As the major work on the UI approaches completion, our focus shifts to updating existing devices to fit the new lightpath interface.
Previously many devices did not ready themselves for lightpath, or did so half heartedly. Most devices were straightforward to update, with some more complicated devices
requiring more investigation (eg. the various offset mirrors). We are doing our best to update and test these devices thoroughly, in order to minimize disruptions during deployment.
With the changes to the lightpath interface, we have updated the package documentation to include information on what lightpath expects and how to ensure your python / ophyd device can be read by lightpath. (https://pcdshub.github.io/lightpath/)
A lightpath demo has been set up, try it by running: (and let Robert know if anything doesn't work)
/cds/home/r/roberttk/lightpath_demo/test_lightpath.sh -h
Hello, Goodbye
| Jasmine, Nguyen joined the ECS Platforms Development team as a Staff Engineer 1, Controls System integrator, with a previous background in industrial controls. Studying mechanical engineering, mechatronics engineering, and sustainable manufacturing, Jasmine contributed to the SLAC sponsored, Spatial Alignment With Machine Vision Robot project at CSU Chico. When Jasmine is not on a rock, they can be found at a skatepark, ice rink, or ski resort. |
| Aron Rezene is a new intern from Washington, DC, joining the LCLS Exp. Control Systems Delivery Team. As an undergrad in Physics at SUNY Oswego, he fancied extracurricular studies in DSP & control systems engineering along with C++ to complement the experimental practices used in physics research. His personal interest include embedded systems and computational physics and before joining SLAC, he served as a test intern measuring thermal impedance of SiPh lasers at the LiDar startup Aeva. His indoor hobbies include chess and watching Arsenal matches, but he prefers to spend free time outdoors, playing soccer, catching up with friends, or going for a hike. |
We waved goodbye to Tyler Pennebaker in August as he prepared to set off for graduate school at UCSB. You can read his kudoboard here.
IT Updates
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