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This is the first ECS PD newsletter. Hopefully we start putting these out on a monthly basis to take stock of the improvements and work we're doing, and let the rest of LCLS know what new things are available from ECS! Note, even more was done than is listed here. We gave ECS 2 days to fill in highlights, but everyone is super busy and so this is just what we managed to write down.
Fixed server configuration issues that caused the network interface on the camera servers to periodically reset, disrupting data collection and often worse.
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Improperly latching "BPTM timeout" faults have been resolved and will no longer prevent beam seemingly at random.
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Fixed bugs:
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XRT Mirrors M1, M2 and M3 are now connected to the PMPS arbiter and coating protection is now active.
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The goal was to get the old Elmo drives out and install a new Beckhoff din rail drive panel. These panels drive 6 axis, 6 absolute encoders, and interface with an E-621 Piezo Controller. Also, the rail was supplied with a new 24/48 volt din rail power supply that had to be racked and wired, so even the wire job was considerable; shout out to Du, Danh who did some fine electrical work. On top of these tasks we had to run the software for MR1L2 on a PLC running software for 2 other flat mirrors in the XRT running older Elmo drive software. Other tasks included getting a new IOC spun up, a new control screen, and re pointing older screens to use the updated MR1L2 screens.
The wiring job took two days, so we stayed late on the second day to get the rail powered up. The PDU was reading negative voltage, shout out to Sameen Yunus for not letting me blow the panel up. We flipped the PDU wires, got positive voltage; got the rail powered on. The Beckhoff 5041s were throwing some error lights and complaining about absolute positions being off.
As Day 3 started, we had a full controls day ahead of us. As I walked in that morning I discussed the encoder errors with Jackson R Sheppard and it was decided to swap the cables. The encoders were a bit funny, we swapped 1 encoder cable out with another that was properly shielded/grounded, and 5 of the encoder errors went away! The emergency STO was checked, and small mechatronics movements began. All axes were moving! except the pitch =( Alex Wallace Margaret Ghaly , led the charge and began digging relentlessly into the heart of the E-621 serial commands. Ultimately, it was decided that the E-621 controller had left us for a better place.
Final day! We moved on from the E-621 and implemented the pitch motion directly with the new actuator Hardin, Corey L. had installed. He was excited to tell us all about the new specs the actuator had, and was hopeful that the actuator was such a high performer that we wouldn't need the E-621. With the IOC spun up by Zachary L Lentz in mere 15 min and Margaret Ghaly checking out M2, M3 I was able to focus on the final full movements of every axis on MR1L2. The Y axis didn't like moving at 200 um/s and would error occasionally, but ran without complaints at 100 um/s. Soft limit positions were set close enough to touch each limit switch without having to activate.
We had about an hour to spare before the XRT was getting scheduled for search. With that Gabriel Castilloand I went and tidied some cables up. Success!
LCLS-II DAQ support has been added for SP1K1's grating pitch! This works up to 120Hz and involves triggering the motion PLC directly to get encoder counts out and sent directly to the DAQ. This can feasibly be re-used to get any values we'd like from the PLC to the DAQ directly. The values are timed into the DAQ using an EVR.
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The attenuator AT1K4 was installed and checked out. Coordinating with TMO, individual filter positions were determined and a calculator IOC was deployed to support easy normalized transmission-based operation.
Kaneda, our trusty ears and eyes in the NEH, now roams the halls freely (with supervision). Let the robot revolution commence. Login and access guidance can be found here. More robots following soon in other LCLS areas. Drive safe, have fun!
The RealWear HMT-1 AR headset was at last deployed to the field at LCLS. Headsets have been handed out to SEAs in nearly every area of LCLS for initial deployment and training. The headsets are assigned to each hutch, as well as ECS, SED and Technical support. Check in with your local SEA to get instructions on usage!
You can find more information here.
The first FIM commissioning shift was conducted successfully this month. Once timed in, we started getting good beam signals on all the wave8 channels. Tests were done w/ both LCLS1 and LCLS2 timing and some lessons were learned re which registers contribute to the timing delay for LCLS1 vs LCLS2. There were also some issues w/ firmware or timing signals freezing where we needed to reset the timing. Will continue to look into this. We'll also be looking to do some improvements to integrate the FIM screens into TMO home and to provide some FIM specific aliases for Wave8 PVs which are of special significance for the FIM.
The newest version of makepeds lives in R1.8.5 of engineering_tools. Changes to prior versions:
ECS Platform Dev began exploring the use of Jira as our future ticketing system. We developed an embedded form for submitting issues to our Jira backlog, which can be found in various confluence locations. The goal is to make a very simple and easy process for people to request help from ECS PD. Ultimately we are looking to embed this process directly into our GUI so control system users can effortlessly report an issue, and provide all the helpful context we need to troubleshoot issues. An additional goal is visualizing the ECS PD work queue. Using Jira we can easily embed our backlog in confluence so anyone can see where their ticket is in the queue and lobby to change priority if needed. So far, our backlog is filling up with tasks from the XBD team as well as our own work. The next step will be to really apply Agile processes to organizing and prioritizing our work items.
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