magnet controls k. luchini
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Magnet Controls K. Luchini. Physics Requirements Engineering Requirements Technical Interfaces Hardware Hardware Alternatives Interface Control Requirements Software Block Diagram Schedule Test Plan Safety Hazards. Physics Requirements. Magnet Power Supplies - PowerPoint PPT PresentationTRANSCRIPT
K. Luchini
LCLS System Concept Review, SLAC [email protected]
November 16, 2005
Magnet Controls K. Luchini
Physics Requirements
Engineering Requirements
Technical Interfaces
Hardware
Hardware Alternatives
Interface Control Requirements
Software Block Diagram
Schedule
Test Plan
Safety Hazards
K. Luchini
LCLS System Concept Review, SLAC [email protected]
November 16, 2005
Physics Requirements
Magnet Power Supplies
Stability/regulation: PS long term average signal
Correctors: 0.1% of maximum current( e.g.10 e-3, 1000ppm)
Bends: 0.05-0.1% of maximum current
Temperature
Diurnal temperature drifts must not exceed +/- 15 degC (Linac gallary is of concern)
Injector hut - temperature controlled racks will maintain a temperature of 72degC +/-1degC
Polarity
Bipolar and Unipolar PS
Pulsed Supplies are all unipolar (BXKIK, BYKIK)
PRD for Polarity Conventions by Paul Emma
Defines positive and negative polarity
Describes how to connect up polarity to terminals on magnet
Permanent stickers to designate the positive and negative terminals on magnets
Existing Magnets
Many SLC magnets will be turned off during LCLS operation
LI21 Quad String
Q21201 must run in opposite polarity in LCLS mode from SLC mode.
Q21301 will be set to zero in LCLS mode (hw installed).
K. Luchini
LCLS System Concept Review, SLAC [email protected]
November 16, 2005
Physics Requirements Cont.
LI24 Quad String
Q24201 – Remove Q24601,Q24701,Q24801 & Q24901 from string
Q24601 needs independent PS
Add two new strings (Doubled up QE magnets)
Q24701A,Q24701B, where Q24701 becomes Q24701A & Q24801 becomes Q24701B
Q24901A,Q24901B, where Q24901 becomes Q24901A & Q24901B is a new magnet
Magnet Correctors with Feedback – total of 20 w/4@ 120Hzl
Maximum rate of 120Hz
Achieve 80-90% of desired B-field with a net change of
Injector, Linac and Undulator: 260mA
LTU: 100mA
Injector YC04,XC04,YC07,XC07 10Hz w/precision of 10% of rms beam size
Linac LI21 XC2402,YC21503,XC21802,YC21900 10Hz w/precision of 10% of rms beam size
Linac LI24 YC2400 10Hz w/precision of 10% of rms beam size
Linac LI25 XC25202,XC25602,YC25503 10Hz w/precision of 10% of rms beam size
LTU XCQT32,YCQT32,SCDL4,YCQT42 120Hz w/precision of 5% of rms beam size
Undulator XCUM1,YCUM2,XCUM4,YCUM3 0.1-0.01Hz w/precision of 10% of rms beam size
K. Luchini
LCLS System Concept Review, SLAC [email protected]
November 16, 2005
Engineering Requirements
Magnet Power Supply FamiliesReduce Family of PS for ease of maintenance and cost60V, 165A, 10kW25V,375A,10kW33V,300A,10kW
Magnet Interlocks including Ground fault protection will be providedControl Interface hardware VME or embedded processors w/PMC or PCI
Standard VME w/o P0CPU w/ two Ethernet ports I/O
Option to obtain signals from P2Analog Input:
Differential signal measurement (requires 2-pins on P2)Minimum true 16-bit resolution (15ppm)Minimum 16-channels per moduleConfigurable or auto scanning as bipolar, unipolar 0-5V,0-10V,+-5V,+/- 10V
K. Luchini
LCLS System Concept Review, SLAC [email protected]
November 16, 2005
Engineering Requirements Cont.
Individual channel gain programmable100KHz throughput in single channel modeScan rate 1MHz update rateAuto scanning for multiple channelsLatency 1ms
Analog Output Updated simultaneously or individuallyMinimum 16-bits (15ppm)Minimum 16-channels per moduleConversion or auto scanning as bipolar, unipolar 0-5V,0-10V,+-5V,+/- 10V
Digital InputOptically IsolatedLargest expected voltage +24V (5,10,24V)Interruptible inputs
Digital Output – Acromag IP445 (32 channel)Optically IsolatedLargest expected voltage +24V (5,10,24V)
K. Luchini
LCLS System Concept Review, SLAC [email protected]
November 16, 2005
Engineering Requirements
Second Transductor Supplied for large and intermediate PS - Quads, BendsNot supplied for correctors or trim coils
Bulk SuppliesUsed for correctors and bend/quad trimsReduced price
RedundancyPCD currently developing and desiging for MCOR systemNo redundancy provided for large or intermediate PS
Stability of controller 15ppm/degCGround FaultSwitching between LCLS mode and SLC mode must not exceed 15 minutesAll magnets terminals will be covered (see Wayne’s Basis of Estimate Reports)Ripple provided every 10 secondsFast feedback @120Hz
8us total time5us to set desired current, including settle time – 80-90% of desired current
K. Luchini
LCLS System Concept Review, SLAC [email protected]
November 16, 2005
Technical Interface
Physicist Paul Emma Patrick Krejcik Roger CarrMark Woodley – Modeling ( SLC db needed Jan 2006 for Injector/BC1)Geoff Pile (APS)
Operations – Date Controls Needed is Aug 2006Mike Stanek – SLC InterfaceArturo AlarconStephen Schuh
Power Conversion Department – Date Controls needed is Feb 2006 Paul BellomoAntonio de LiraDave MacNair
EngineeringBob Fuller - one man does allCarl Rago – MechanicalJohn Dusatko - ElectricalMike Cecere – ElectricalMario Ortega – Racks & CablingPatrick Bong - PPS
K. Luchini
LCLS System Concept Review, SLAC [email protected]
November 16, 2005
Technical Interface Cont.
Magnet Measurements Zack WolfScott Anderson
Conventional FacilitiesJavier Sevilla – LinacBob Law – InjectorLori Shewchuk – Master Motor Controller for Injector/BC1
SoftwareShen Peng Stephanie Allison – SLC Aware IOC & Fast FeedbackDebbie Rodgin – SLC Aware IOCDiane Fairley – High Level ApplicationsStephen Norum - MPSArgonne Inteface
Josh Stein - Undulator SLC Interface
Ken Underwood Nancy Spencer (SLC db needed Dec 2005 for Injector/LI21)Ron Chestnut
K. Luchini
LCLS System Concept Review, SLAC [email protected]
November 16, 2005
HardwareVME
Crate Wiener - 24 SlotDawn 6100 - 2 Slot (This is VME 64X)
Motorola Mvme6100Embedded CPU - under investigation PC104 Plus, ColdFireSBS VIPC627 IP Carrier (4-ports)Acromag IP330 ADC 16-channel, BiRa VSAM 16-bitAcromag IP231 DAC 16-ChannelAcromag IP440 Digital Input 32-channnelAcromag IP445 Digital Output 32-channel
Intermediate PS Controller SLAC Ethernet Controller – Dave MacNair Provides ps regulation, ramp rate, health of psTemperature stability 2ppm/degC
MCOR System15ppm/degCMCOR 12/30ANo ground fault (circuitry to be added by PCD)No redundancy provided for large or intermediate PS
K. Luchini
LCLS System Concept Review, SLAC [email protected]
November 16, 2005
Hardware Alternative
SNS PS ControllersPrice good
Not able to use in Linac due to diurnal temperature drifts in summer
PS expected to do regulation
PSI Controllers
Too expensive
PS expected to do regulation
APS PS Controller
Still under development
PS expected to do regulation
Upgrade SLAC Ethernet Controller
Embedded IOC – pc104 plus, coldFire processors
FPGA for regulation code,etc
Hardware Knob Boxes – ESD group Ron Chestnut
K. Luchini
LCLS System Concept Review, SLAC [email protected]
November 16, 2005
Interface Control
Fast feedback20 Correctors at a maximum rate of 120Hz
8ms between pulses total
5ms to set magnet B-field within 80-90% of desired
No EVR modules required in magnet IODC
Status read back of DAC setting provide to fast feedback within 1 millisecond (ms)
Use second Ethernet port on switch VLAN for communication between BPM and Magnet IOC’s
MPSDesign underway by Stephen Norum
Bends strings only – bulks
Injector: BXH1,BXH2,BXH3,BXH4
Linac LI21: BX11,BX12,BX14,BX14
I/O Signals requiredDigital on/off status of PS
Analog Input (including transductor)
TBD if data is retrieved from the EPICS db or directly from hw
PPSAll magnets will have their magnet electrical connections covered such that power systems comply with SLAC, National Electric Code and OSHA regulations.
No provisions for interlocking magnet power supplies for magnet safety.
K. Luchini
LCLS System Concept Review, SLAC [email protected]
November 16, 2005
Software Block Diagram
StandaloneStandalone
SCPSCP
Ethernet
EPICS clients User I/F – almost any OS except VMS
SLCVMS Control System
SLC-aware IOC
EVG
PNET
CPU
SLCMPG
Standalone
DBEX
SCP
CA
CAmsg
msg
msg dbex
IP
CARRIER
Mod
Other Clients
SLC AwareMagnetFacility
SLC DB
Dev.Sup.
DrvSup.
EPICS Magnet FacilityLCLS MPG
SLC Interface
EPICS CA Interface
Timing System
Hardware Interfaces
High Level Apps
Run-timeDB Access
SLC-aware threads
EPICS
dbex
Magnet Facility
CPU
DIMAD
dbex
SLCDB
PS Controller
Magnet
EDM
EPICS DB
IP
CARRIER
Mod
Seq.FFBKTask
K. Luchini
LCLS System Concept Review, SLAC [email protected]
November 16, 2005
Schedule
Software – Phase I
Magnet Functions: Trim, Calibrate, Standardize, Degauss, Ptrb – Feb 2006
Knobs - from scp and sliders from EPICS
Diagnostic Calibrate
PS On/Off
Interlock Reset
SLC Aware IOC Magnet Control and Monitor (Debbie Rogind) - Done
SLC db
Only for Injector, Linac and BSY magnets
Injector and BC1 needed Dec 2005 for Modeling
SLC MicroSmall changes – K. Underwood Feb 2006
EPICS drv. & dev. Support - End of Dec 2005
EPICS db and Sequences Jan 2006
Fast Feedback – Oct 2006
New High Level Applications – Oct 2006
K. Luchini
LCLS System Concept Review, SLAC [email protected]
November 16, 2005
Schedule Cont.
PS and controllersSpecification: July 2005
Purchasing: Injector/LI21 Aug-Oct 2005
Delivery: Jan-Feb 2006
PS TestingBench testing in building – no software needed
Assemble racks in building 24 – software controls required (trim, calib, stdz, ptrb)
Install racks and magnets for Injector – Jan-Feb 2006
Install magnets for LI21 – Aug 2006
Integration: Mar-Apr 2006Cables connected – Hookup magnet and PS
Turn on and check out magnets
Phase I: Aug-Nov 2006 (4 month down period)Integration of Linac
Installation of magnets and ps in BC1
Cables connected in BC1 – hookup magnets
Turn-on and checkout magnets in BC1
Commissioning: Dec 2006-Aug 2007
K. Luchini
LCLS System Concept Review, SLAC [email protected]
November 16, 2005
Test Plan
Modeling - Mark WoodleyBench testing of PS systems
Will not require controls softwareMagnet PS Assembled in Racks before installation
PS connected to a dummy loadFunctions to check out supply
Turn OnTurn OffReset InterlocksPerturb TrimCalibrateStandardize
Magnet PS InstallationPS connected to a real loadFunctions to check out supply
Turn OnTurn OffReset InterlocksPerturb TrimCalibrateStandardize
K. Luchini
LCLS System Concept Review, SLAC [email protected]
November 16, 2005
Safety Hazards
Electrical Hazards