PP-101007-a-TST

Tobias Stadlbauer 1

Tobias StadlbauerTobias Stadlbauer

Special MagnetsMedAustron

7-8 October 20107-8 October 2010

Special Magnets ControlsSpecial Magnets Controls

Status and PlansStatus and Plans

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ContentContent

Devices covered by Special Magnets Controls

Cooling Controls

Position Controls

Power Supply Controls

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Devices covered by Special Magnets ControlsDevices covered by Special Magnets Controls

Magnetic Septa (cooling controls)

(2 systems)

Fast Pulsed Magnets (cooling controls)

(for MKC in-house, rest part of tender)

Electrostatic Septa (remote position controls)

Power Supplies (2 high voltage DC, 6 fast pulsed)

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Control architecture for Special Magnet SystemsControl architecture for Special Magnet Systems

SupervisoryControlSystem

PCC

PowerConverter

Magnet

MainTimingSystem

O(250)

PCOFED

RegulationBoard

R

R Optional

Optical trigger (optional)

AnalogSlow control &

digital set-point/measurement

FE

CO

S

FEC FED Device

Analogueand

DigitalIO

Industrialfieldbus

TechnicalNetwork

Slow Control

Technical Network

Fast Control

Tier 2 Tier 3 Tier 4

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Generic layout

Example: PCO interface

Special Magnets Controls sees responsibility for the green blocks

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Element Name FEC Power supply

FED

Position control

FED

CoolingAlarms

FED

Timing Local control System(LCS)

LEBT fast deflector

EFE PCC “PCO FED”* MTS CERN TE-ABT

Electrostatic septa

ESI, ESE

PVSS? PLC PLC CERN TE-ABT

Injection Bumpers

MKI PCC “PCO FED”* MTS EXT.

Magnetic septa

MSI, MSEa, MSEb

PCCPVSS?

PCO(1) PLC(2) (1) EXT. (CERN TE-EPC)

(2) CERN TE-ABT

Dump bumpers

MKS PCC “PCO FED”* MTS EXT.

Tune kickers MTV, MTH

PCC PCO* MTS(RF?)

EXT.

Chopper dipoles (Medical Device)

MKC PCC(BDCS)

“PCO FED”* (BDCS)

MTS(BDCS)

EXT.

* No optional regulation board

Slow control for Special Magnet overviewSlow control for Special Magnet overview

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Cooling Controls – example: Thin Magnetic SeptaCooling Controls – example: Thin Magnetic Septa

PLC

[7,8]

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Position Controls: Electrostatic SeptumPosition Controls: Electrostatic Septum

PLC

BIS(Beam Interlock System)

[7,8]

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Architecture for power supply controlsArchitecture for power supply controls

Introduction Power SupplyPower SupplySlow Controls AOB

[8]

SupervisoryControlSystem

PCC

PowerConverter

Magnet

MainTimingSystem

O(250)

PCOFED

RegulationBoard

R

R Optional

Optical trigger (optional)

AnalogSlow control &

digital set-point/measurement

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State Diagram for Special Magnet power suppliesState Diagram for Special Magnet power supplies

ON

OFF

STANDBY

OFF&

FAULT

ON

DEFECT

RESET & NOMINAL

DEFECT

ON

STANDBY RESET &DEFECT

OFF

STANDBY

OFF

CommandsOFFSTANDBYONRESET

GLOBAL OFF which is a state of the power supply in which the entire system (including CONTROL/ELECTRONICS and any AUXILIARY services) is switched off through a main circuit breaker. Manual action is required to transition the power supply from the GLOBAL OFF condition into the OFF state: a transition from the GLOBAL OFF condition into any other state is not permitted.

StatesOFFSTANDBYONOFF & FAULT

Introduction Power SupplyPower SupplySlow Controls AOB

ConditionsA DEFECT is a condition which will cause an interlock.A NOMINAL condition is one in which there are no interlocks and hence no DEFECTs.

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CommandsCommands

A Command is defined as something that is recognized by the Power Supply and drives the Power Supply between two states. The Commands for the Power Supply are:

OFF: If no DEFECT is present, the power supply is transitioned to the OFF state. In this state the outputs of the AC power sections of the system are switched off through a magnetically actuated circuit breaker. CONTROL/ELECTRONICS and any AUXILIARY services are powered on.

STANDBY: If no DEFECT is present, the power supply is transitioned to the STANDBY state. In this state the outputs of the AC power sections of the system are energized, and ALL power semiconductors are in the off-state (i.e. zero current in the load). Only the triggers for the switched elements of the power supply are inhibited.

ON: If no DEFECT is present, the power supply is transitioned to the ON state. In this state all circuits are energized and the trigger gates are enabled. The power supply will pulse upon the receipt of appropriate timing signals.

RESET: After all DEFECTs are cleared, and a RESET command is issued, the power supply will transition to the OFF state. Accidental depression of the RESET button must not result in any hazardous operation.

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Timing and Control for Special Magnet power supplies (1)Timing and Control for Special Magnet power supplies (1)

0

4

8

12

16

20

24

28

-40 -20 0 20 40 60 80 100 120 140 160

Mag

net

ic In

du

ctio

n (m

T)

Time (µs)

0

0.5

1

1.5

2

2.5

3

-40 -20 0 20 40 60 80 100 120 140 160

Ele

ctro

de V

olta

ge (

kV)

Time (µs)

The MedAustron Control System will provide:

•The necessary timing pulses (START and STOP) to drive the power supply;•The state commands and the value of the voltage reference for the present cycle (fixed?)

The MedAustron Control System will provide:

•The necessary timing pulse (START), synchronised with the LEBT Deflector to drive the power supply;•The state commands and the value of the voltage reference for the present cycle•The value of the slope length

LEBT fast deflector (EFE)

Injection Bumpers (MKI)

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Time

0s 0.5us 1.0us 1.5us 2.0us 2.5us 3.0us 3.5us 4.0us 4.5us 5.0usI(LMAGNET)/1190

-0.4A

0A

0.4A

0.8A

1.2A

Control and Timing for Special Magnet power supplies (2)Control and Timing for Special Magnet power supplies (2)

0

200

400

600

800

1,000

1,200

1,400

0 50 100

150

200

250

300

350

400

450

500

Mag

net

Cu

rren

t (A

)

Time (µs)

The MedAustron Control System will provide:•The necessary timing pulse (START)•The state commands•The value of the magnet current reference for the present cycle (need B-train to track beam energy)

The MedAustron Control System will provide:•The necessary timing pulse (START and STOP), synchronised with the RF train (ns precision) to drive the power supply;•The state commands and the value of the current reference for the present cycle

Dump bumpers (MKS)

Tune Kicker (MTV, MTH)

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tr ton tf toff Time

Magnet Current

ImagThe MedAustron Beam Delivery control system will provide:•The state commands and the value of the magnet current reference for the present cycle;•The necessary timing pulses (START and STOP) to drive the power supply;

To reduce the probability that the PKC will receive an incorrect command to remain in the on-state (e.g. due to a faulty trigger card), a timing protocol using two independent timing inputs is envisaged.

These two inputs would be “ANDed” in the LCS of the PKC to derive the required trigger state: a HIGH level on BOTH input lines represents a START signal, whereas a LOW level on either or both lines, represents a STOP signal. The “AND” unit must be failsafe, i.e. if it or its power supply fails it must give a low level output.

Timing and Control for Beam Chopper Power Supply (PKC)Timing and Control for Beam Chopper Power Supply (PKC)

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StatusStatus

Magnet Slow Control Requirements almost finished.

Engineering Specification Documents for: MKC, MKI, MTH, MTV including control interfaces, published

Supply of Special Magnets and Their Power Supplies, TECHNICAL DESCRIPTION (now in 1st stage of 2 stage tender process)

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PlanningPlanning

Study, design and specify LEBT Deflector system: Electrostatic deflector (CNAO design), generator and control.

End week 43, 2010

Study and specify fast pulsed magnets controlEnd week 51, 2010

Study, specify and produce control for electromagnetic septaEnd Week 9, 2011 + ongoing activity for production

Study, specify and produce control for electrostatic septa with focus on motorization prototyping and high voltage power supply specification

End week 31, 2011

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ReferencesReferences

Introduction Power SupplySlow Controls AOBAOB

[1] J. Borburgh, M. Barnes, T. Fowler, M. Hourican, T. Kramer. T. Stadlbauer, Special Magnets - Final Design Report, CERN, 2010 (unpublished).[2] J. Gutleber, R. Moser, MedAustron Control System Architecture and Design Document, MedAustron, ES-1000406-a-JGU.[4] T. Fowler, T. Kramer, T. Stadlbauer, Special Magnets Control System Requirements Specification Document, CERN, unpublished.[5] J. Gutleber, R. Moser, Main Timing System and Signal Distribution Services, MedAustron, unpublished. [6] J. Borburgh, et al., “MedAustron Special Magnets - WP description”, CERN, Geneva, 2009[7] M. Marchhart, T.Glatzl “Magnet Slow Control - Requirements”,

MedAustron[8] T. Glatzl “Overview Magnet Slow Control”, MedAustron, 2010