nsrl control system

Mar. 12, 2008 Li, Chuan: NSRL Control System NSRL 1

NSRL Control System

NSRL Control System

Presented by Li, Chuan

National Synchrotron Radiation Laboratory


• National Synchrotron Radiation Laboratory• Hefei Light Source


• Hefei Light Source (HLS): second generation dedicated synchrotron light source

200MeV electron linacBeam transport line800 MeV electron storage ring


• Old control system Problems:No connection between subsystemsSoftware function was simpleNo database, only parameter backup in some

subsystemsHardware components were out of date and maintenance

becomes more and more difficult


• Phase II project of NSRL started in April 1999 formally.

• Design Philosophy for new control system Adopting distributed architecture Applying standard hardware interfaces:

Sun workstation, Industrial PC, PLC Cost-performance should be considered


• New control system: based on EPICS Operator Interface, OPI LAN Input/Output Controller, IOC

OPI LAN IOC I/O Equipment

Fig. Basic hardware structure of control system based on EPICS


• Upgrade process in Phase II Project May 1999: set up a prototype system June 2000: the first subsystem （ storage ring main magnet power

supply control system ） was commissioning. Oct. 2003: the last subsystem （ storage ring octupole magnet

power supply control system ） was commissioning.

• Upgrade process after Phase II Project upgrade EPICS base version to R3.13.10 Continually add or update subsystem:

New transport line magnet power supply control system

New wiggler main power supply control system

Magnet temperature monitor system

Ring Vacuum SIP monitor system

……


• Hardware platform

1 Sun Ultra 13 Sun Ultra 101 Sun E25018 PC （ Linux ， Windows ）A large number of Industrial PC (IPC)Others: such as PLC, single-chip microcomputer


• Software environment:OPI ： Solaris7/8; Red Hat7/9; WindowsXP/2003 IOC ： vxWorks 5.3.1Local controller: vxWorks 5.3.1, Windows, etc.EPICS base: 3.13.10Program language: C, SNL, tcl/tk, PHPEPICS tools: dct, MEDM, sddstoolkitDatabase: Oracle 8i, SQL server


Hardware in HLS Control System


Topological structure of the dedicated control LAN


• 8 subsystems: Power supply:

Ring main magnet PS; Ring corrector magnet PS; Ring octupole magnet PS; Skew quadrupole mag. PS

Transport line magnet PS; Linac magnet PS Klystron focusing coil PS Injection system pulse PS; Linac modulator pulse PS Wiggler main PS; Wiggler compensation PS

RF Vacuum BPM,PBPM Interlock Flag Temperature

Linac Temperature; RF Cavity Temperature Magnet Temperature; Water Temperature; Environment Temperature

SoftChannel


subsystem IOC Local controller OPI

IPC IPC PLC

Others

SUN PC(Linux)

PC(Windows)

Ring main mag. PS 3 12 12 5 4

14

Ring corr. Mag.PS 1 8 Ring vacuum 4 54

Ring Flag 1Injection system 3

RF 2 1 2 1Temperature system 3 6

RFKO 1 2Ring octupole mag. PS 1 Transport line mag. PS 4 20

Switch mag. PS 1 1Kly. focusing coil PS 1 6

Analysis Mag. PS 1 Linac vacuum 2 32Linac mag. PS 1 8

Flag 1 2interlock 2

Linac Modu. pulse PS 6

sum 25 56 16 108 5 4 14

25 180 23


• 23 OPI 5 Sun Ultra (Solaris7/8)4 PC (Linux7.0/9.0)

14 PC (WindowsXP/Windows2003 Server)

• 25 IOCIPC (with flash disk diskonchip 2000)

• 180 Local controller56 IPC (with flash disk diskonchip 2000)16 PLCOthers, 108

• 100M dedicated LAN, 5 switches


• Current regulating PS control Current regulating PS:199

Ring main mag. PS (12) ; Ring corrector mag. PS (32); Ring octupole mag. PS (1); Skew quadrupole mag. PS(2)

Transport line mag. PS (80); Linac mag. PS (30)Klystron focusing coil PS(42)

IOC: IPC with diskonchip 2000 8 port serial board (MOXA,C168P)

Local controller: IPC with diskonchip 2000;12/16b ADC/DAC board, Relay/DI board; optical isolation

Communication: RS232 over fiber; RS422 with optical isolation point to point


• BPM: done by beam measurement groupVXILabView + ActiveX48 bpm Channels6 pbpm in use


The count of local controllers based on IPC↑(Increase)

→ The reliability of whole control system ↓(Decrease)

• Failure Reason:– CPU fan– Memory bank– The communication protocol between IOC and local

controller is too simple to deal with all kinds of errors because it is designed by ourselves.


• A new kind of PS local controllers based on Agilent34970A Data Acquisition/Switch Unit

Agilent34970A

RS232/GPIB To IOC

AD

IPC Bus

DA DI DO

Addressing Communication


• Advantage:– Higher reliability

• SCPI Communication Protocol

• No CPU Board on IPC BUS

– Higher measurement precision• 16 bit AD → 22 bit AD

– No need program for local controllers


Software in HLS Control System


• Software development for IOCRecord: ～ 3000Record type: Ai, Ao, Bi, Bo, Mbbi, Mbbo, MbbiDirect,

MbboDirect, Subroutine, subOut and maio.

subOut and maio are new record types we development.

device support/device driver developmentCreate db using DCTSNL （ State Notation Language ） and sequencer


• Record statisticsSubsystems Record Number

Ring main mag. PS ~400

Ring corrector mag. PS ~250

Transport line mag. PS ~800

Linac mag. PS ~300

RF ~150

Vacuum ~400

Injection system pulse PS ~50

Flag ~50

Others ~600

sum ~3000


• Software of OPIMEDM : edit and manage most of man-machine interfaceTcl/Tk + SDDS toolkit: complicated control, such as

ramping controlMatlab: matrix calculation,such as closed orbit

correctionPHP: Web page, such as machine status online


• Beam rampingRamping table calculation

E-B relation, B-I curve ， I-D curveC, Tcl/Tk

Ramping control:No dedicated hardwareRamping, ramping down, tune ramping


A typical operation mode：

• Injection 200MeV electron from linac；• Ramping it to 800MeV；• Tunning lattice ， decrease emittance from

160nmrad to 80nmrad；• Compensation Lattice while charge Wiggler

Main PS;• Running closed orbit correction.


• Beam closed orbit correction

BPM MonitorIOC

Power Supply

CorrectorIOC

Orbit correction OPI

Beam

Corrector MagCorrector Mag BPM BPM

the dedicated control LAN


• Beam closed orbit correctionHardware ：

24 BPMs along storage ring, 48 channels32 corrector magnet PS

Matlab on WindowsXPresponse matrix calculation

Requirement:| y|⊿ ＜ 30µm (σx: 0.45~1.87mm,σy : 0.13~0.43mm）

Matlab Applications

Matlab to EPICS(MCA,)

Channel Access to Accelerator Hardware


2006.9.23 8:00 － 18:00 All vertical BPMs

（ No feedback）

0 2 4 6 8 10

-0.04

-0.02

0.00

0.02

0.04

0.06

0.08

0.10

BP

M O

ffse

t(m

m)

T(Hour)


2007.1.20 8:00 － 18:00 All vertical BPMs（ Feedback）

0 2 4 6 8 10-0.03

-0.02

-0.01

0.00

0.01

0.02

0.03

BP

M O

ffse

t(m

m)

T(Hour)


0 2 4 6 8 10

-0.02

0.00

0.02

0.04

0.06

0.08

0.10

Feedback

No Feedback

BQ6EV

BP

M O

ffset

(mm

)

Time(hour)

BQ6EV


0 2 4 6 8 10

-0.05

-0.04

-0.03

-0.02

-0.01

0.00

0.01

0.02

Feedback

No Feedback

BQ1NV

BP

M O

ffset

(mm

)

Time(hour)

BQ1NV


Status Online and Database in HLS


• Machine Status online and History DatabaseHardware platform: PC(Linux), PC(Windows)

double network cards,

connect to dedicated control LAN and NSRL LAN

Software development:

SDDS toolkit, Tcl/Tk, PHP

Channel Archiver, perl, CGI Interface: B/S (browser/server)Classification: All users / NSRL users


• Hardware structure


• Machine Status online interface


• History data query interface (channel archiver)


• History data query interface (SDDS)


Summary

• A distributed control system based on EPICS

• Multiplicate units,such as Industrial PC, PLC,and data acquisition meter are used

• Cost-effective and high reliability


Thank you!

nsrl control system

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