FAIR Accelerator Controls Strategy

XXIII PANDA Colaboration Meeting11. Dez. 2007

U. Krause

11 Dec 2007 2

Accelerator Control

• Synchronized operation of equipment– Ramp magnets, RF simultaneously– Tracking tolerance ~10 µs max

• Pulse-to-pulse switching– Different beams in successive cycles

• Specific set data

• Accelerator modelling– Equipment: Magnets, RF generators

• Each specific ramps

– Operators: Handle physical parameter• Beam energy• Extraction time• Tune• ...

11 Dec 2007 3

Distributed Decentralized System

databases

application

devicepresentation(no real-time)

equipmentcontrol

(real-time)

communication middleware

equipment

Controlobject

sub-system

Controlobject

equipm. equipm.

modeling

Controlobject

timing: event

generatorsequence control

timing events

background services

modeling

Controlobject

synchronizedcontrol engine

equipm.I/O

modeling

Controlobject

stand alonecontrol engine

equipm.I/O

operator terminals

11 Dec 2007 4

Synchronization: Central Timing

Precision of General Timing: 1 µs (100 ns ?) Sufficient for nearly all tasks in accelerator controls

Higher precision: Dedicated systems (e.g. BuTiS)

Timing Generator A

Experiment 1

Experiment 2

Timing Generator B

LPC ALPC BLPC C

EXP 1EXP 2

Sequence Control

Timing Generator C

11 Dec 2007 5

Slow Controls

• Handling valves, pumps, motors, DC power supplies, ...• Not primary focus of accelerator controls

– At least at puls-to-pulse switched facilities– GSI accelerator controls, FESA / LSA (CERN)

• Widely used in industrial environments– Many commercial products– SCADA-systems– PLCs

11 Dec 2007 6

CERN: UNICOS

• Statement CERN:– No off-the-shelf system covers needs of big installations

• CERN develops frameworkUNICOS: UNified Industrial COntrol System– based on commercial products

• SCADA: PVSS

ETM professional control

• PLCs: Siemens, Schneider

– not closely tight to dedicated systems– to fit well into accelerator control environment

11 Dec 2007 7

Industrial Control ArchitectureAccelerator Presentation Tier

Accelerator Middle Tier

control system connection to the process directly or through field-buses

Industrial Field layer

SCADA Servers

Industrial Supervision Layer

Interface to operators

(Monitoring & Command emission)

Real time DB & Archiving

Accelerator Resource TierE

ther

net

Net

wor

k

&

TC

PIP

com

mu

nic

atio

n s

ervi

ces

Control Logic Actions

Industrial Control layer PLC Process Control

PLC Process Control & Field interface

PLC Field interface

Fieldbus Networks

Operator Consoles

From CERN presentation (P. Gayet, ICALEPCS 2005)

11 Dec 2007 8

Field devicesI/O devices Process Control Objects

I/O

Board

s

An Inputposition

An Output position

ControlValve

DI End switch

DO position

On-Off Valve

AI M value PID

Equ

ipm

ent

mod

ule

AI positio

nAO

position

ControlValve

DI End switch

DO position

On-Off Valve

AI M value PID

Eq

uip

ment

mod

ule

Equ

ipm

ent

mod

ule

UN

IT

UNICOS Break Down

IN UNICOS

-Each control module or equipment module is a device

-Each device type is an Object Class

-Each device is instantiated in the control layer as PLC Object

-Equipment modules and Units are embedded in a unique object class : Process Control Object

-All PLC Object classes are based on the same model

From CERN presentation (P. Gayet, ICALEPCS 2005)

11 Dec 2007 9

Layers IntegrationIn the Supervision layer a proxy is associated to each objectThis proxy will present the relevant object info to the operator And allow manual command emission

Industrial Supervision Layer

Industrial Control Layer

Object status

Human Requests

SCADA Object HMIParameters

Manual Request

Information display

SCADAProxy

Auto. Requests

Object logic

Orders

PLC ObjectObject status

Manual Requ.

ParametersProcess Inputs

Process

From CERN presentation (P. Gayet, ICALEPCS 2005)

11 Dec 2007 10

UNICOS Applications

• Coding– Automated code generation

• PLCs: Skeletons, common modules (interlock, configuration, ...)

– GUI library• Produce GUIs by drag-and-drop drawing

• Instantiation– Instance Generator

• Input: EXCEL spreadsheets

– Automated middleware configuration

11 Dec 2007 11

Integration in Accelerator Control

From CERN presentation (P. Gayet, ICALEPCS 2005)

11 Dec 2007 12

FAIR Accelerator Controls

CERN controls components are interesting• Front-End control (equipment side): FESA• Control applications (operator side): LSA• Slow controls: UNICOS

– Vacuum– Cryogenics– others