A U.S. Department of Energy Office of Science Laboratory Operated by The University of Chicago Argonne National Laboratory Office of Science U.S. Department of Energy LCLS Facility Advisory Committee October 12-13, 2004 Undulator Controls update S. Joshua Stein

Pioneering Science and Technology Office of Science U.S. Department of Energy 2 Undulator Controls : Recent changes Scope has been changed slightly since last FAC -Phase correctors have been eliminated -Remote operation of quadrupole magnet supports has been eliminated -Remote control of cradle motion has been added (“macroscopic” motion) -Electro-magnet quadropoles have been specified instead of the permanent type

Pioneering Science and Technology Office of Science U.S. Department of Energy 3 Undulator Controls : Strongback Motion Servo motor test at APS -Purpose: Determine if industrial servo motors are sensitive to radiation exposure – and if so, to what extent -Parker servo motor installed within the intra-insertion device space in sector 3 of the APS during the last run (began in June) - Dosimeter (alanine) readings taken early August indicated high absorbed dosage (~8.5Mrad) - Motor would not respond to commands or motion during any tests during the June-Aug run - Shutdown tests indicate certain components within the motor became activated – further tests lead us to believe the resolver circuitry was damaged (likely due to the presence of CMOS electronics)

Pioneering Science and Technology Office of Science U.S. Department of Energy 4 Undulator Controls : Strongback Motion Considering steppers -Depending on the mechanical design it may be possible to use stepper motors for the CAM motion with little or no holding current - Recall it was requested we eliminate any holding current if at all possible to avoid unnecessary heat source within the tunnel -By using the Hydrostatic Leveling System and the Wire Position Monitoring system for motion feedback, (radiation vulnerable) encoders can be eliminated.

Pioneering Science and Technology Office of Science U.S. Department of Energy 5 Undulator Controls : Video (recap) OTR Stages -Acquire and analyze beam - Position - Shape - Size -30 Hz capture and analysis rate (possibly up to 120Hz in the future) -Large FOV requirement at “reasonable” resolution - Allows digital “zoom” - No need for two camera configuration - Digital interface for frame grabber

Pioneering Science and Technology Office of Science U.S. Department of Energy 6 Undulator Controls : Test Stand We are attempting to assemble a image analysis test stand ASAP -High resolution and high data rate requirements limit the choice of cameras and image capturing hardware - PCI based image capturing systems are prevalent and (relatively) inexpensive - Current design is considering a PC or Mac based host (running a soft IOC) with a PCI frame grabber. Tests will indicate: - Upper threshold for data grabbing and analysis Can we do this at 30Hz? 120Hz? How Big? - Correlation with LCLS time-stamp data How to receive the events?

Pioneering Science and Technology Office of Science U.S. Department of Energy 7 Undulator Controls : Magnet Supplies It is still early in the determination of quad supply requirements, but we anticipate the use of LCLS ‘standard’ magnet supplies. -34 quads with horizontal and vertical components -DC (non-pulsed) supplies -Low power Cabling has to be estimated along with additional heat load to the tunnel

Pioneering Science and Technology Office of Science U.S. Department of Energy 8 Undulator Controls : Conclusions Video test stand goals -Begin prototyping a video capture system for the OTR diagnostic - Camera choice - Capture options - Software model - Awaiting spending authority for hardware (~$16K) - Host (Dual G5) [$5K] - Camera (2Mp, 12bit) [$5K] - Capture board and supporting hardware [$3K] - Fiber transceivers and cable [$3K]

Pioneering Science and Technology Office of Science U.S. Department of Energy 9 Undulator Controls : Conclusions Motion test stand goals -Strongback cradle Motion tests - Investigate (campaign for) stepper motor usage - Assemble test stand and begin development [~$6K] - Motor [$1K] - Controller / supply [$1.5K] - IOC [$3K] - Software modeling of five axis motion control -Wire Position monitor specifics - We need to assemble specifics on how the Wire Position Monitor and the Hydrostatic Leveling system will integrate into the control system

Pioneering Science and Technology Office of Science U.S. Department of Energy 10 End of slides – supporting materials follow

Pioneering Science and Technology Office of Science U.S. Department of Energy 11 Imaging notes Capture board – Active Silicon -Phoenix model ( - PCI interface - Connect to host Macintosh – development with GCC - Run softIOC for EPICS connection - Initial tests encouraging for 30Hz high resolution (640x480) analysis

Pioneering Science and Technology Office of Science U.S. Department of Energy 12 Imaging notes Camera – Imperx Inc. -MDC 1600 (

Pioneering Science and Technology Office of Science U.S. Department of Energy 13 Motion notes Drive / Controller -Compumotor Gemini GV6K (servo) or Gemini GT6K (stepper) - Serial / Ethernet interfaces - Integrated drive - Encoder / resolver interface standard -

Pioneering Science and Technology Office of Science U.S. Department of Energy 14 Undulator Assembly

Pioneering Science and Technology Office of Science U.S. Department of Energy 15 Undulator hall : Entrance section

Pioneering Science and Technology Office of Science U.S. Department of Energy 16 Undulator hall : Exit section

Pioneering Science and Technology Office of Science U.S. Department of Energy 17 Undulator hall : Long break

Pioneering Science and Technology Office of Science U.S. Department of Energy 18 Undulator hall : Short break