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Magnet Controls K. Luchini

This overview provides information on the hardware, software, and control systems for the magnets in the Injector, Linac, and BSY. It includes details on power distribution, installation, embedded controllers, and remaining items.

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Magnet Controls K. Luchini

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  1. Magnet Controls K. Luchini • Overview • Hardware • Software • SLC Aware IOC • Database • Modeling • EPICS • Injector and BC1 Schedule • PS and controllers • Construction • AC Power Distribution • Installation and Turn on • Embedded Controllers • Items Remaining

  2. Overview • Magnet • Master List Location BEND QUAD XCOR YCOR KICK SOLNTotal (N/E) Injector 8 19 15 15 0 2 59 Linac li21 4 17(9/8) 14(8/6) 14(8/6) 0 0 49 (29/20) li22 0 8 (0/8) 8 (0/8) 8 (0/8) 0 0 24 (0/24) li23 0 8 (0/8) 8 (0/8) 8 (0/8) 0 0 24 (0/24) li24 4 13(4/9) 6 (0/6) 6 (0/6) 0 0 29 (8/21) li25 0 8 (0/8) 9 (0/9) 9 (0/9) 1 0 27 (1/26) li26 0 8 (0/8) 8 (0/8) 8 (0/8) 0 0 24 (0/24) li27 0 8 (0/8) 8 (0/8) 8 (0/8) 0 0 24 (0/24) li28 0 8 (0/8) 8 (0/8) 8 (0/8) 0 0 24 (0/24) li29 0 8 (0/8) 8 (0/8) 8 (0/8) 0 0 24 (0/24) li30 0 7 (0/7) 8 (1/7) 8 (1/7) 0 0 23 (2/21) BSY 0 7 8 (2/6) 8(2/6) 0 0 23 (11/12) LTU 8 38 18 19 1 0 84 Undulator 0 33 33 33 0 0 99 Dump 3 3 3 3 0 0 12 Total 27 193(113/80) 162(80/82) 163(81/82) 2 2 549 (305/244)

  3. Overview Cont. • Special Magnets/ Double duty • Linac 21 • Q21201- reversible in LCLS mode • Q21301 – off for LCLS mode • Linac 24 • Q24201 – Remove Q24601,Q24701,Q24801 & Q24910 from string • Q24601 needs an independent PS • Magnet Correctors with Feedback - Total of 20 w/4 @120Hz Injector XC04,YC07,YC004,YC07 10Hz Linac-L2 XC21402,XC21802,YC21503,YC21900 10Hz Linac-L3 XC25502,XC25602,YC24900,YC25503 10Hz LTU XCQT32,XCDL4,YCQT32,YCQT42 120Hz UND XCUM1,XCUM4,YCUM2,YCUM3 0.1-0.01Hz • Magnet Polarity Conventions PRD by Paul Emma • Describes the meaning of positive and negative polarity • Describes how connect up magnets • Permanent stickers designate the positive and negative terminals on magnet http://www.slac.stanford.edu/grp/lcls/controls/global/subsystems/magnet/slaconly/prd/1%201-010-r0-magnet-polarities.doc

  4. Hardware • Magnet Power Supplies • Stability/regulation • The power supply stability (long term average signal) • Correctors: 0.1% of the max current (e.g. 10 e-3, 1000 ppm). • Bends: 0.05 -0.1% of maximum current • Temperature (affects controllers chosen) • Diurnal (temperature) drift must not exceed +/- 15deg. In the Linac expect 30deg C. • INJ hut temperature controlled racks that will maintain a temperature of 72 degrees +/1 degre • SLAC Ethernet Controller temperature stability – 2ppm/degC • MCOR temperature stability – 15ppm/degC (fulfills Linac temp fluxuations) • Magnet PRD by P. Emma list temperature stabilities • Existing QE Magnet PS in Linac • meet 0.5% stability requirements - when operated at 10% of PS full scale rating • Replace later • Second Transductor • Supplied for large and intermediate ps • Not supplied for correctors • Bulks • Used for correctors and quad trims/boosts • Reduce Price • PS Families • 60V,165A,10kW • 25V,375A,10kW • 33V,300A,10kW • Redundancy • PCD currently developing/designing for MCOR system • No redundancy provided for large or intermediate PS

  5. Hardware Cont. • MCOR-12/30A – Small PS Control • 16 individual bi-polar channel, 1 slot per 12A • 2-slots required to compose a 30A channel • Magnet types • Correctors • Quads trims • Bend trims • Bulks – Rack mountable • VME Control and Monitor • IPAC Analog I/O Modules • IPAC Digital I/O Modules – Interlock Reset/ On-off Control if available • PS Redundancy – under discussion • Spare MCOR channels may be used to provide a switchable form of redundancy • SLAC Ethernet Controller – Intermediate PS • Hardware changes to existing magnets – LI21, LI24 (QE) • Stability test done on existing PS in Linac and BSY • SCOR’s in Linac - used quads and correctors • near end of life / stability and regulation questions answered. • Will not be replaced in Phase I • Later propose replacement with MCOR system – easy transition.

  6. Hardware Cont. • Procurement • Injector and LI21 • Requisitions done • Transductors for Injector in house • Order BiRa MCOR System this week • Bid on Intermediate PS reived Oct 14th, 2005 • Order Intermediate & small PS – Oct 25, 2005 • VME Crate/CPU in-house for Injector • VME Modules – evaluation modules in-house • PS and Controller Estimated Cost by Paul Bellomo Injector 253K Linac 275.9K BSY 177.4K LTU 806.7K Undulator 477.7K Note: using LCLS hw and ps used so far Dump 110.1K Total 1847.9K http://www.slac.stanford.edu/grp/lcls/controls/global/subsystems/magnet/slaconly/Cost%20Estimate.xls http://mdweb.slac.stanford.edu/Doc%20Control.Utilities.View%20Images.displayImage.php?img=pdf/Released/3/ei3802010101.pdf

  7. Software • Requirements • Phase I – High level Alpha apps, modeling, steering, correlation plots will be used. • Requires SLC and EPICS db for Injector, Linac LI21-30 and BSY • Fast feedback (EPICS) from 10Hz to 120Hz • For magnets that will do double duty • Hw changes to fulfill LCLS requirements QE in LI21 and LI24. Magnets used in SLC as well. • Two loads: connection to on PS in SLC mode and a different PS in LCLS mode. • The switching between these two modes, SLC and LCLS must  not exceed 15 minutes. • Must supply a second transductor for intermediate and large power supplies • SLC Software. • Databases – Injector, BSY only (Injector and Sector 21 Dec 2005) • Modeling – to begin in January 2006 (M. Woodley) • Small micro changes to magnet job (K. Underwood) • SLC Aware IOC – Debbie Rogind • Allow magnet control/monitoring messages to be passed from the Alpha to EPICS • Updates the SLC database with the latest magnet control/monitor information • Control functions supported: Trim, Calibrate, Standardize, Perturb, Check

  8. SLC Aware IOC

  9. Software Cont. • EPICS • Drivers Support • Analog and Digital VME – EPICS Community • SLAC Ethernet Controller driver- SPEAR • Device Support - Standard • Database • Map SLC db units to EPICS PV’s – Injector, Linac and BC1 only • SLC test database available • Injector and LI21 db – Dec 1, 2005 • EPICS Db – Nov 2005 • Magnet Control and Monitor Functions • Sequences: • Trim • Calibrate • Diagnostic Calibrate • Standardize • Degauss • DB: Perturb, Check, PS On/Off • Extensions: • EDM Displays • Configuration Files: Alarm, Save/Restore, Archiver

  10. Injector and BC1 Schedule • PS and controllers: • Specification: July 2005 • Purchasing: Aug-Oct, 2006 • Delivery: Jan-Feb 2006 • Construction • Injector hall and vault: Oct 2005–Feb 2006 • Motor Control Center – AC Services • Defining AC service requirements and PPS control - Now • New specification • How power is shut off to racks – proposal presented for magnet • Power usage requirements increased from original best guess - OK • Mark up drawings for subsystems – Bob Fuller, Mario Ortega, Lori Shewchuk • Magnets – P. Bellomo • Installation: Feb-Mar 2006 • Installation of magnets and PS • Integration: Mar-Apr 2006 (Injector) • Cables connected - Hookup magnet and PS • Turn0n and checkout of magnets • Phase I: Aug-Nov 2006 (4 months) down time • Integration of Linac • Installation of magnets and ps in BC1 • Cables connected in BC1 – Hookup magnets and PS • Turn-on and checkout Magnets in BC1 • Commissioning: Dec 2006-Aug 2007

  11. Embedded Controllers • APS and SNS PS Controllers w/embedded IOC • PS provides regulation to fulfill stability requirements in PRD • FPGA used to separate out important functionality • Upgrade of SLAC Ethernet Controller • Embedded ColdFire processor – upgrade • Controls one ps or more • Provides ps regulation as well as ps health • Linear & cosine ramp functions built into controller - part of command set • Removes a layer of complexity by removing the bitbus over UDP communication. • MCOR Analog and Digital Controls • Hytec 9010 IOC Blade – interesting possibility • http://www.hytec-electronics.co.uk/IOC.pdf • 4-Ethernet, IPAC, PCI embedded controller pc-104 Plus • Cost Advantage – No need for VME crate • 8K for crate and 2k for CPU • 7U rack space required vs 1U for the Blade • Cabling simplicity – back of rack rather than front of modules in VME crate

  12. Embedded Controllers Cont. • Advantages • Cost • Described above for MCOR system. • Built to control more than one ps • reduce IP address required if only one controller per PS • Reduce rack space • Increased Speed • useful for fast feedback control of magnets @ 120Hz • Remove layer of complexity • Communication between controller and IOC – Bitbus over UDP for SLAC Ethernet Controller • FPGA • Useful to separate out ps control that won’t be interrupted when IOC is rebooted • Easy upgrade path for future Linac micro upgrade. • Standardization • Magnet ps controls - can be used for large, intermediate and small PS • Maintenance easier in the areas of both software and hardware • Other subsystem applications use • rf • vacuum • diagnostics

  13. Items Remaining • Magnet control interface with feedback • Embedded IOC that can be used across subsystems • SLC database puts of BDES from EPICS – not available in phase I • SLC and EPICS Linac and BSY displays required in Phase I • Purchase of PS and controllers for LI22-30,BSY, LTU and Dump. • Phase II • Future upgrade of PS in Linac and BSY – SCORs to MCOR

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