Progress of the Controls for BEPCII

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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
• Whats the next

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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

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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

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What we have done

• Installed hardware platform
• A SUN Ultra10 Workstation
• A PPC750 IOC MVME2431
• Built EPICS environment
• EPICS base and extensions

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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

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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

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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

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Part II System design

• Introduction
• System architecture
• System development
• Subsystems
• Interlock system
• Oracle DB
• Timing system

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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

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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

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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

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Number of device and channels
Device Num. AI AO DI DO WF other Sum
Power supply 399 399 399 1596 798 3192
Vacuum 517 957 398 814 994 488 3651
Injection kicker 8 8 16 40 4 4 72
Radio frequency 7 72 35 180 50 4 341
Beam diagnostic 459 864 80 80 6 1030
Injector Linac 325 559 198 228 198 36 1219
Summary 1715 2859 1046 2938 2124 50 488 9505
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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

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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

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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

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2. System Architecture

• Distributed architecture
• Presentation layer
• Process control layer
• Device interface layer

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Presentation layer

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

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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

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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

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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

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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
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3. System development

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

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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

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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

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4. Subsystems

• Power supply
• Vacuum
• RF control
• Linac control

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Power Supply Control

• PS on SR about 350 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

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Power Supply Control

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

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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)

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Vacuum Control

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

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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

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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

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Linac Control

• Functions
• Power supply control (Upgrade,new PS)
• Klystronmodulator 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)

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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 Qcorrector PS

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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
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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)

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5. Interlock system

• Layers of the interlock system

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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

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5. Interlock system

• Flow chart of interlock system

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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

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6. Database

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

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6. Database

• Relation between IOC database and Oracle

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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

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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

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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

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10. CPM plan

• RD 8 month
• Detailed design 4 month
• System development 28 month
• Installation testing 8 month
• Total 4 years

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Summary

• Progress
• System design
• Thank you!