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Progress of the Controls for BEPCII

This seminar presented by J. Zhao on August 20, 2002 outlines the progress and system design of the Controls for BEPCII EPICS project. It covers topics such as user requirements, system analysis and design, hardware installation, software development, and the next steps.

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Progress of the Controls for BEPCII

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  1. Progress of the Controlsfor BEPCII EPICS Seminar Presented by J. Zhao 20 August, 2002

  2. Outline • Progress • System design

  3. Part I Progress • What we have done • What’s the next

  4. What we have done • User requirement • Functions • Control accuracy • Operating mode and sequence • Requirement of OPI • Device protection • Tables: • Device infor. • Channels • Name convention of DB

  5. What we have done • System analysis • System design • International review meeting • 13-17 May, 2002 SLAC • Comments: pay attention to • The modeling applications • Developing the I/O drivers for special devices • Timing system

  6. What we have done • Installed hardware platform • A SUN Ultra10 Workstation • A PPC750 IOC: MVME2431 • Built EPICS environment • EPICS base and extensions

  7. What we have done • Practice and evaluation • DB configuration • DM2K, MEDM • StripTool • Gnuplot • Developed a Linux IOC on PC • PCI & ISA device driver on Linux Platform • VME I/O driver on vxWorks

  8. The next step • Build complete prototype system • Order hardware interface • VME-CANbus, VME-CAMAC • VME-RS-485,232, VME I/O modules • PSC-PSI • Order CapFast • Order Oracle • To solve the key technologies

  9. The next step • Selecting a Lab. from which the modeling applications will be transferred It might be KEKB or others • Creating an EPICS platform for IHEP users to learn EPICS

  10. Part II System design • Introduction • System architecture • System development • Subsystems • Interlock system • Oracle DB • Timing system

  11. 1. Introduction • BEPCII • Injector Linac • Two transport lines • Two storage rings • System data of BEPCII • 1700 devices (800 at BEPC) • About 9500 channels (4,500 at BEPC) • should be a stable and practical system

  12. Function of the system • Controlling and monitoring equipments in central and local control room • Providing accelerator commissioning tools with a friendly man-machine interface • Timing system to synchronize the accelerator equipment • Storing raw data and information in DB for later analyses

  13. System Components • Computer control system • Host and front-end computers • Network links • Device interfaces • Operator console • Database service • Timing system • Synchronizing the accelerator equipment for beam injection, storage and collision • Safety interlock system • equipment protect and personnel safety system

  14. Number of device and channels

  15. WS console Ethernet VAX 4500 Injection Beam diagnostic Injector CAMAC system PS, Vacuum, RF The current system • BEPC control system • Transferred from SLAC New Spear system in 1987 • Upgraded in 1994 • A VAX4500 machine with CAMAC system controls • PC based subsystem

  16. Upgrade plan • New equipment have to be controlled • BEPCII has double ring, the number of device will be increased • Super-conducting RF cavities and magnets • New magnet power supplies and vacuum devices • Upgrading software structure with EPICS • The software structure of BEPC can not support BEPCII • Experimental Physics and Industrial Control System • Modifying timing system • RF frequency will be changed from 200MHz to 499.8MHz

  17. Design Philosophy • Adopting distributed architecture • Keeping the existing equipment in use • CAMAC modules • PCs • Applying standard hardware interfaces • VME, Feildbuses, PLCs etc. • Cost-performance should be considered

  18. 2. System Architecture • Distributed architecture • Presentation layer • Process control layer • Device interface layer

  19. Presentation layer • SUN Unix WS and PCs used as operator console • SUN or HP Server • Database service • Computing resources

  20. Process Control layer • Seven subsystems: • Power Supply system, • RF, Vacuum, Beam diagnostic, • injection PS and Linac controls • Front-end computers (IOC) • VME Power PC (MVME2431) • PCs • Real-time O.S. VxWorks • IOC database in physical memory

  21. Device Interface Layer Provide interfaces to the hardware • Hardware standards • VME, CAMAC I/O modules • Allen-Bradley PLCs • FB remote I/O controller (made in China) • PSC-PSI • Field-buses serve data communication

  22. Data Communication • The standard 100Mb Ethernet serves data communication in the high level • The fieldbuses make data exchange in the low level • ControlNet • CANbus • RS-485, RS232

  23. Hardware structure console Ethernet VME IOC VME IOC VME IOC PCs CAMAC Field bus GPIB RF devices PS of SR Beam Feedback Vacuum Linac PS of TL Waveform

  24. 3. System development Software engineering system development stages • Asking for user requirement • System design • coding and testing • Installation

  25. Development tool EPICS Developing BEPCII control system by EPICS • OPI (operator interface) • UNIX WS or PCs/Linux with tools DM2K, ALH, Channel archiver, GDCT/Capfast, Knob manager SNL languige • CA(channel access)/CDEV • C/C++, Labview, tcl/tk, • IOC (input/output controller) • VME CPU board or PCs • VxWorks • real-time database • device drivers

  26. System development plan • Creating EPICS Prototype • Installing hardware platform • Software development • Installing EPICS base and extensions • Creating EPICS IOC database • Developing • operator consoles • applications for device control • Accelerator commissioning programs • Transferred from KEKB or other Lab. • Creating Oracle database service • Upgrade of timing system

  27. 4. Subsystems • Power supply • Vacuum • RF control • Linac control

  28. Power Supply Control • PS on SR: about350 new • 10 VME IOCs are located in the local area • ADC/DAC unit is inside the power supply to make settings and readings • PS on TL: 53 old • Connecting CAMAC system to VME IOC with VME-CAMAC interface • Or VME I/O modules depends on the budget and man-power

  29. Power Supply Control • Monitor current, status (on/off, local/remote, normal/alarm) • Control on/off Settings Ramp, Directly, Synchronized, Table ramp Standardization knobs • Interlocktemperature of a magnet with its power supply

  30. Vacuum Control Two VME IOC • Connecting intelligent device to VME IOC by RS-485 and RS-232 • Vacuum interlock system consists of • Allen-Bradley PLC (ControlLogix5555 and AB-1756 I/O) • ControlNet (SST-5136CN-VME or Ethernet)

  31. Vacuum Control • Monitor Vacuum pressure Temperature of vacuum chamber Current, voltage of pump Status (on/off, normal/alarm) • Interlock vacuum pressure with section valves

  32. RF control • VME IOC MVNE2431 • VME I/O modules • Oscilloscope - GPIB- PC for collecting waveform signal EPICS PCAS on the PC • RF interlock system including cryogenic system consists of AB-PLC and ControlNet

  33. RF control • Monitor volts, power, phase, tuning, temperature and vacuum pressure, status of water, gas and cryo. System information • Control on/off RF power source setting volts adjusting tuning system adjust RF phase continuously 0-360 degree • Interlock vacuum, Temp., Cryogenic system with RF devices

  34. Linac Control Functions • Power supply control (Upgrade,new PS) • Klystron&modulator control (Upgrade) • Interlocking vacuum pressure of outside/inside windows of klystron with modulator HV • Measuring RF phase and amplitude of output envelop • Phase-shift control (rebuild) • Adjusting/monitoring the stroke of electromotor of phase-shift and attenuators • Vacuum control (Upgrade,60 new pump)

  35. Linac Control Functions • Electron gun control(new) • Monitoring current, vacuum pressure • Adjusting current and choose operation mode • e+ target control (rebuild) • Display beam parameters (Part task) • Beam optics and orbit correction system (Part task) • Measuring parameters of RF power source, power supplies, and BPM etc. • Making feed back control for Q&corrector PS

  36. Linac Control Current system • Front-end: PC WIN98 • Field bus: CANbus • Device controller: FB remote I/O modules PC-P3 550 WIN98 RS232-CANbus CANbus / RS422 Remote I/O Device

  37. Linac control VME IOC in Linac control room to replace the PCs • FB series remote I/O controller for device control • CAN bus serves data communication • Oscilloscope and PC for waveform signal collection (EPICS/PCAS)

  38. 5. Interlock system • Layers of the interlock system

  39. 5. Interlock system • Functions of central interlock system • Making interlock between systems • Treating emergency accident • Displaying alarm summary in central control room • Publish alarm information to corresponding area

  40. 5. Interlock system • Flow chart of interlock system

  41. 6. Database • Two databases • IOC real-time database to store real-time data • Oracle database to store a lot of information • Information in database • Static parameters • Machine parameters • Device data • Configuration parameters of control system • Dynamic parameters • Device status • Alarm data • Beam parameters • Management information • Project management • Technical files • Personal information

  42. 6. Database • Name convention • Domain name RI Storage ring (inner ring) RO Storage ring (outer ring) TL Transport line L Injector Linac • Sub-domainPS, VC, RF, MK, K, B etc. • Device name B,Q,S, Pump etc. • Signal type AI, AO, DI, DO, CALC etc. • Description string

  43. 6. Database • Relation between IOC database and Oracle

  44. 7. Timing System • Functions • Synchronize the equipment of the accelerator • the electron gun, klystron, modulators and the injection kickers -- the bunch -- injected into -- bucket • Provide reference time • for beam diagnostic system and other system • The timing system has to be upgraded • RF frequency will be changed from 200MHz to 499.8MHz • There are two revolution frequency for • collision mode (1.264MHz) • Synchrotron radiation mode ( 1.242MHz) • Send people to go to KEKB learning timing system and order the hardware modules from Japan

  45. 8. key technologies • key technologies • Creating system architecture with the EPICS • merging existing system to the EPICS • Developing front-end applications • Transferring modeling Applications • Build a prototype to study the key technologies • Making international and domestic cooperation

  46. 9. Man power • The Man Power • Total 15 persons for 4 years • Project manager 1 • Hardware engineer 4 • Software engineer 10 • The computer and EPICS system manager • EPICS database manager • VxWorks expert with Front-end I/O • Programmers for applications (PS,RF,Vacuum,Linac…) • Oracle Database manager • Network manager

  47. 10. CPM plan • R&D 8 month • Detailed design 4 month • System development 28 month • Installation & testing 8 month • Total 4 years

  48. Summary • Progress • System design Thank you!

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