Control Philosophy

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Control Philosophy Diagnostic
SystemsofSuperconducting Cyclotron (SCC)
Anindya Roy, C I Group
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Control Philosophy of SCC
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Features of Control LAN

• Isolated from VECC General LAN to maximize
  Security. Free from Worms
• Viruses.
• Star topology 2-Tier Design Central Switch in
  the Control Room Floor
• Switches in different floors like Basement,
  Basement Mezzanine, Vault etc.
• Fiber Gigabit Backbone and end-to-end fiber
  connectivity in the Radioactive Zone
• for reliability. Node level speed 100 Mbps.
  Media Converter for devices having no
• fiber port.
• Service zone CAT5E UTP Cabling
• Tolerant to single switch / link failure due to
  Resiliency in Hardware.
• Network Management Software (NMS) for managing
  the network with indication
• for probable link failure
• In-house capability for maintenance and
  extension of SCC LAN, leading to
• minimum downtime and ease of operation.

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Advantage of Fiber Cabling

• Immunity to EMI and RFI noise
• Not limited by 100 mtr segment length of UTP
  Copper Cabling. Permissible range allowed for
  Gigabit Ethernet 550 mtr. (Multimode)
• Can be laid side by side with Power cable.
  Neither radiate noise nor get affected by noise
  radiated by other cable bundle.
• Lower signal attenuation. No cross talk hazard.
  Packet loss minimum.
• Longer life expectancy (Minimum 25 years of
  working life). Future proof cabling (Same cabling
  for Fast Ethernet, Gigabit Ethernet and
  ten-Gigabit Ethernet).
• No ground loop. Secure communication. Light
  signal can not be tapped.
• Most suitable for backbone application. For
  Industrial environment and hazardous areas Fiber
  is the ideal solution

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Resiliency in Hardware

• Fail-safe Stacking configuration of Central
  switches provides redundancy with future
  extendibility
• Active-active mode provides double backbone
  bandwidth in normal operation i.e. 4 Gbps instead
  of 2 Gbps
• Distributed Multilink Trunking (DMLT) provides
  tolerance to single link failure between Central
  switches and Floor switches

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Subsystems of SCC

• LCW Monitoring System
• Trim-coil Cooling Water
• Temperature Control System
• Radiation Monitoring System
• Sub-station Control System
• Door Control System
• Control Database
• SCC Control Room

• Cryogenic Plant
• Cryogen Delivery System
• High Current Power Supplies
• Magnetic Field Mapping System
• Deflector Power Supply
• RF System
• Vacuum System
• ECR Ion Source

• Beam Diagnostic System

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Cryogenic Plant Control System

• Scope of control
• Helium Liquefier- Refrigerator of 250W _at_ 4.5K
  refrigeration capacity for Superconducting
  Cyclotron
• 16500 litres Liquid nitrogen storage and
  distributions for Superconducting Cyclotron
• Gas management systems like compressors, gas bags
  and buffer tanks
• Pneumatic and chilled water systems for the above
• Total over 500 field input outputs and 8
  interlinked process control loops

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Control Architecture of Cryogenic Plant
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Operator Interface of Cryogenic Plant Control
System
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High Current Magnet Power Supplies

• Main Magnet Power Supplies (Nos. 2)
• 20 V, 1000 A, 10 ppm
• Trim Coil Power Supplies (Nos. 18)
• 400 A, 10 ppm
• Windows based HMI developed in VB 6
• All these power supplies are equipped with
  intelligent controllers and serial transceivers
  and can be operated and monitored remotely over a
  serial link

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Control Architecture
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Operator Interface for Main Magnet Power Supplies
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Operator Interface for Trim Coil Power Supplies
Operator Interface for Trim Coil Power Supplies
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Magnetic Field Mapping System

• Scope
• Field measurement - at different excitations up
  to 26 radius on
• discrete azimuthal bands beyond 26 radius
• Analysis of the measured raw data for magnet
  correction
• Finding the magnetic symmetry axis
• Correction of average iron field distribution by
  iron shims
• Minimization of first harmonic component by
  shimming
• Coil centering by support link force balance
• Salient features
• Automated High speed data taking - 90 min per
  100K Data Points
• 70 micron radial encoder resolution
• 0.004 deg. Angular Encoder resolution
• Special precision electronics (VFC, NMR, Jig
  controller, smart motors)
• PC based Client-Server architecture implemented
  using C LabVIEW
• On-line plot and harmonic analysis for error
  correction.

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HMI System set-up of MFM System
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Results of Magnetic Field Mapping
1st Harmonic Field Correction
Average Field Correction
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Deflector Power supply Control Conditioning
System

• Conditioning the deflector by conditional
  ramping of voltage depending
• on dark current
• EPICS IOC communicating with Deflector power
  supply, DAQ modules and
• Vacuum gauge controller in ASCII protocol over
  RS-232
• EPICS Archiver for data storing and analysis
• Operator Interface

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Control Architecture of Deflector Power Supply
Control Conditioning System
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Vacuum Control System

• 24 Pumping modules consisting of Scroll pump,
  Turbo pump,
• Rotary pump, UHV Valve, Pirani gauge
  Combination gauge
• Distributed control architecture to minimise
  system downtime
• EPICS based IOC, HMI Oracle archiver

HMI Station
ORACLE Archiver
EPICS IOC
Control LAN
Vault Beam line PLC
Cave Beam line PLC
Main machine Linear PLC
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Control architecture of ECR Ion Source
Distributed realtime control system based on
Field point RT modules from National Instruments
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Operator Interface of ECR Ion Source
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LCW Plant Monitoring System

• Scope of the system
• Monitoring 18 process parameters e.g.
  Temperature, Pressure, Flow, Conductivity, Level
  pH
• Modbus-TCP based DAQ modules
• Windows based EPICS IOC MMI developed using VB

Control Architecture
EPICS IOC HMI
Control LAN
MODBUS-TCP
Data Acquisition Module
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Operator Interface of LCW Plant
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Trim-coil Cooling Water Temperature Control System

• Monitoring 15 process parameters e.g.
  Temperature, Pressure, Flow, Conductivity Level
• Controlling Trim-coil Cooling Water temperature,
  Conductivity Surge tank level
• Providing interlock to TCPS
• Siemens Redundant Controllers ELIPSE SCADA
  based MMI

Control Architecture
ELIPSE HMI
Control LAN
MODBUS-RTU
Ethernet to Serial
16 Ch Scanner
Siemens Redundant Controllers
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Operator Interface of Trim-coil Cooling Water
Temperature Control System
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SCC Substation Control System

• Scope of Control
• Four nos. of incoming feeder including two diesel
  generators
• Bus coupler
• Fifteen nos. of outgoing feeders
• Five nos. of Tri-Vector Energy meters
• Control Architecture

MMI Archive viewer
IOC Archiver
Control LAN
Modbus TCP
Schneider Premium PLC
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Operator Interface of Substation Control System
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Radiation Monitoring System

• 21 Neutron Flux Monitors and 12 Gamma Area
  Monitors
• Located at various locations in SCC building
  e.g. Vault, Basement,
• Caves, High-bay, RF Power supply Room, MMPS
  Room
• Dedicated multidrop RS-485 Control LAN for
  Remote monitoring at
• Health Physics
• Providing Interlock to Door Control System, RF
  System Access Control
• System

Door Control System

• 6 Radiation Shield Doors at Vault, Basement,
  Cave-1, Cave-2 Cave-3
• Provide safety interlock to ECR, RF Shield
  wall plug operation
• Compel operator to search for human occupancy at
  Radiation zone before
• switching on Cyclotron by making safety-chain
  complete
• Interlocked with respective radiation monitors
• PLC based system for generating interlock and
  alarm

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Control Database

• Oracle 11g Database Server
• Dual Intel Xeon Processor, dual Power supply
  RAID 6
• Configuration to ensure data integrity
• DAT Drive for backup at regular interval to
  prevent data
• overflow
• Control data storage for Historic analysis
• Data exchange among different systems
• Oracle-Archiver for interfacing EPICS based
  system with
• web based historic analysis of archived data

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SCC Control Room

• PC based remote control and monitoring of all
• systems
• Assignable soft knobs for controlling multiple
• parameters
• Alarm, On-line numerical display and trending
• of important parameters

Control LAN
KVM (L)
Anti-room
UTP CAT 5E
Console
KVM (R)
KB
Mouse
VDU
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Beam Diagnostic Systems

• Viewer Probe
• Main Probe
• Magnetic Channels

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Control Architecture HMI of Viewer Probe
BORESCOPE
CCD CAMERA
DRIVING MECHANISM
LINEAR ENCODER
SERVER PC AT BASEMENT
RS232
SUPERCONDUCTING CYCLOTRON
RS485
CONTROL LAN
LCD TV
CLIENT PC AT CONTROL ROOM
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Control Architecture of Main Probe System

• 4 finger Probe Top, Middle, Bottom ?R
• MMI developed in VB6 with MSExcel
• data storing
• Plot against Radius with Zooming facility

Electrometer 10 Ch. Curr. Scanner
Filter Box
Lin. Encoder
RS232
Step. Motor
RS232
Stepper Motor Driver
Gate Valve Limit Switch Reading
Read out System
Super Conducting Cyclotron
Control LAN
Ethernet to Serial
HMI Station
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Operator Interface of Main Probe System
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Control Architecture HMI of Magnetic Channels
SCC
MAGNETIC CHANNELS
Position Read-Out Modules
RS485
SERVER PC AT BASEMENT
RS232
CURRENT MULTIPLEXER
ELECTROMETER
CONTROL LAN
GUI (Server) for Magnetic Channels Position
Monitoring
CLIENT PC AT CONTROL ROOM
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Sincere regards to

• N. C. Samanta
• B. Mukhopadhyay
• C. D. Dutta
• P. Y. Nabhiraj
• R. B. Bhole
• Biswajit Sarkar
• Tanushyam Bhattacharjee
• U. S. Panda
• Joydeep Mishra
• Niraj Chaddha

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Thank you!