Hamid Shoaee LCLS Facility Advisory Committee [email protected]April 2007 1 Control System Overview April 16, 2007 Hamid Shoaee for the LCLS Controls Group Outline Injector control system installation & commissioning Status update Linac & beyond Summary
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Hamid Shoaee LCLS Facility Advisory Committee [email protected] April 2007 1 Control System Overview April 16, 2007 Hamid Shoaee for the LCLS Controls.
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Field installation of large amount of cable plant, networking, racks, electronics and software for injector controlDevelopment of detailed plans for linac and BC2 installationCoordination and re-planning of undulator control with ANLDevelopment of a conceptual design for X-ray End Stations DAQ and ControlsAIP projects for MCC networks upgrade, LCLS MPS and Linac BPMStarting the design of next generation applications software
Production Systems DeliveredNetworks at S20 RF Hut & MCC: physical and wireless
LCLSDMZ, LCLS private, wirelessMCC infrastructure upgrade: power & racksLINUX Servers for applications and EPICS data archivingControl Room Linux WorkstationMCC and S20 Laser Room are actively in use for commissioning
Laser Safety System (LSS)Was needed early to allow laser commissioning
PPSPassed many reviews by internal and external reviewers, citizens committeesThe FIRST SLAC programmable PPS is online and operational
BCSPrevents radiation from ‘escaping’ the shielding enclosureDirect measurements of radiation or beam lossProtection of safety-critical collimators and stoppers The need for BCS was identified late, and the system had an aggressive schedule, but was completed and certified in time for ARR approval
Interim MPS Using existing linac infrastructure (1553 MPS)Adding new signals and devices for LCLSInterim MPS will be used for gating beam
Single Shot ModeBurst Mode
Pockels cell and MPS mechanical shutter limit laser rate on cathode
LCLS MPS (presentation at break out)Will be used to protect the undulator and photon sectionsHeld conceptual design review, now proceeding to detailed design
Sector 20 RF distribution system - Phase and Amplitude Controllers (SPAC) - OperationalPhase and Amplitude Detectors (PAD) - OperationalPhased Locked Oscillator – Use SPPS unit for Turn OnLO Generator - OperationalMultiplier – 476MHz to 2856MHz - Operational4 distribution chassis - Operational
LLRF Control and Monitor System1 kW Solid State S-Band Amplifiers – 5 unitsPADs – 6 Klystron units in FabricationPADs – Gun, L0A, L0B, L1S –OperationalPACs – Gun, L0A, L0B, L1S –Operational
Beam Phase CavityPill box cavity with 2 probes and 4 tuners – Complete
The injector laser stabilization system includes two feedback loops
The first loop includes two mirrors, each with two actuators and one camera. It stabilizes laser traveling through a 10-meter tubeThe second loop includes one mirror with two actuators and adjusts the laser position on the cathode.
The IOC reads the image from camera, calculates the laser’s position error and applies a correction to the actuators.The loop operates @ 1 Hz, and the camera is synced to 120Hz.
Completed Installation in sectors 20 and 21Commissioning is in progressFinished hardware bench testingFinished PMC-EVR driverEVG sequence RAM programming at 360HzTimestamp distribution on the EVR IOCsCompleted cabling plans and documentationCompleted beam-synchronous acquisition
MCC Applications & InfrastructureConfiguration management (save & restore)Alarm managementError LogsData archivingCorrelations plotBuffeted acquisitionOnline modelArtemis problem trackingOperations and Physics E-logs The SLC-aware IOC provides beam synchronous data to Buffered Acquisition and Correlation Plots from a number of sourcesAIP network upgrade at MCC for gigabit traffic to support digital control room
Applications provided in MATLABImage ManagementBunch Length MeasurementEmittance and Energy Application
Developed a conceptual design for end station data acquisition and controlHeld a Conceptual Design ReviewDeveloped a detailed task list and a project plan
The AMOS experiment may eventually take data @120Hz producing ~700 MB/second or 2.4 TB/hour or ~58 TB/24 hourThe plan is to build on previous experience.Initially use commercial digitizer and COTS CPU for spectrometer data.Use scalable technology developed for LSST for CCD data.
Capitalize on years of BaBar experience with hierarchical storage and management of HEP data.
~1 TB/day raw data.~1 TB/day derived data.~1.5 PB total Babar data.
Extend/integrate several SLAC-developed Java-based technologies for data retrieval and analysis.
Breakout Session 4 – CONTROLSLocation – Redwood A, Bldg 48
Monday, April 16th Time Topic Presenter1:30pm Controls commissioning experience P. Krejcik2:00pm LCLS MPS S. Norum2:30pm BPM and Toroid Update S. Smith 3:00pm Break
3:30pm X-ray End Station (XES) Controls R. Sass4:00pm Timing Systems update S. Allison4:30pm BC2/Linac Controls Installation Planning H. Shoaee 5:00pm Discussion
The injector control system is online & operationalIt has taken heroic effort by Controls group to meet the commissioning deadlineThe plans are in place for linac & BC2 installationWe have developed a detailed plan for the undulator control in collaboration with ANLA conceptual design is in place for X-ray End Station data acquisition and controlThe major risk for the above items is schedule rather than technical complexity