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Realisation of the interlocking between SPS, LHC and CNGS and open issues

Beam Interlock SystemBeam Interlock Systemss

(BIS)(BIS)

B.Puccio and R.Schmidt B.Puccio and R.Schmidt

for the Beam Interlock Teamfor the Beam Interlock Team

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Why a Beam Interlock System?

Collects status or

default signals

Performs a summation of all signals

As one of the systems involved in the machine protection,

the Interlock system has to:

BIS

User ‘Permit’ Signals

Kicker SystemBeam ‘Permit’ Signals

Transmits the result as:

- Dump Request

- Injection Permit

- Extraction Enable

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Specification for LHC Beam Interlock system

1. Fast2. Safe3. High Test Coverage4. Maintainable5. Monitorable6. Cost Effective7. Deterministic

LHC ring, LHC- Injection, SPS ring, Transfer-Lines

~70μs over 28km

Requesting Beam Dump = SIL 3

Low repair time

Self-DiagnosingProvides first Post Mortem info

On startup – ‘As Good As New’

Protects $$$ but need not be $$$

Know what it’s going to do & when

8. A CERN-wide generic Beam Interlock System

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4…up to 14 User Interfaces

The LHC solution as a generic answer

up to 1200 metersBeam Permit Loops

BeamPermit #1

#3

BeamPermit

BeamPermit #2

User Interfaces (installed in User’s rack)

Test &Monitoring

Module

Pat

chin

g

Coremodule F.O.

interface

Safe Beam Par.

(via Timing)

SafeBeam

ParameterReceiver

+

Beam Interlock Controller

copper cable

VME CRATEVME CRATE

Control Network

ApplicationSW

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Some Hardware pictures

Front view

Rear view

PCB

Front view

CIBT card

(Test & Monitoring board) BIC crate with beam-1 cards only

Patching at the back of the BIC crate

User Interface

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The main features

BIC as proposed for LHC can be “easily” used for interlocking

the SPS ring, SPS-LHC-CNGS Transfer lines and LHC Injection.

Designed to be Safe, Fast, and Deterministic.

Redundancy throughout: User Systems BIS Kicker system

Simplicity for crucial process Effort on monitoring and maintainability

Cost effective:

– Set of BIC cards 6k CHF (VME system not included)

– User Interface 1k CHF each (connection cable not included)

Using a Generic solution with unique Hardware:

– Simplify the Hardware production, installation and maintenance

– Reduce the workload in using a common Monitoring Software

– Offer the same environment to the Operators

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Beam Interlock Systems as service and client of AB-CO

• The Beam Interlock Systems are at the same time service to the accelerator operation and client of AB/CO• Service:

• Provide safe and fast link between Equipment systems & Kicker system• Play key role in Post-Mortem process and Beam Abort analysis • Supply remote monitoring and failure diagnostics

• Client:• VME system and Timing connection support from CO-HT • JAVA based supervision support from CO-AP

• FESA framework supported as [ ] by CO-HC

• (future) Database support for asset management, controls layout, naming and configuration support from CO-DM • Logging, Post Mortem and ALARMS client for CO-DM & CO-AP• Tools for automated commissioning during regular cold-checkout are expected (similar to the Sequencer used for Hw Commissioning)

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Extensive testingadditional Analysis of

DependabilitySeries Production

Install & Commission

Schedule

Q4Q1 Q2 Q3Q1 Q2 Q3 Q420072006

Injection test

Beam commissioning

CNGS test

SPS start-up

Q4

BIC project is quite mature now:

– Basic technical choices validated during last TT40/TI8 Extraction tests.

– Since then, the Hw has been upgraded and tested in the lab.

– Hw board pre-series production foreseen for the end of the year.

BICs will be used for the next SPS start-up (in // with existing Interlock system) as a “real” test bench before LHC

Concerning the 2 next major milestones (CNGS tests and LHC sector test):

the required BICs will be installed and commissioned on time.

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System partition and manpower

# of

BICs

# ofUser

Interfaces

Connected systems

LHC Beam 16 ~120 BLM, Collimation, Vacuum, Experiments, Access, RF, BT systems, Operators/CCC, PIC, WIC, FMCM, etc…

Transfer Lines 10 ~50 ROCS/Power Converters, BTV, BPM, TED & TBSE, CNGS target, Magnetic horn, etc…

LHC Injection 2+(6)* ~20* TDI, TCDI, FMCM, Operators/CCC, etc…

SPS ring 6 ~30 Vacuum, Power Supplies, BPM, BLM, BCT, etc…

* : if Injection Permit Loop involves distributed BICs

Manpower: the BIC hardware design, fabrication, installation and commissioning is performed by…

In our team: 1.0 electronic engineer (very talented PhD student)

1.0 FSU for one year

Help from other teams (inside and outside CO):

0.3 technical engineer (electronics)

0.5 technical engineer (electronics)

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Injection Interlock

Injection Interlock

System X

System X

System X

System X

System X

System X

Using same architecture as for LHC Beam Permit in using same BIC:

– Do NOT consume resources in new Hw & Sw developments

– Easy to implement, to extend, to maintain, and to monitor

– Expensive solution (25 to 30 KCHF per BIC), since only one connection per BIC

Other solutions are possible:

– Using PLC and Optical Links for example

– Collaboration with BT is being considered

How to implement the Injection Inhibit

requested by the Experiments and BT?

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Realisation of the interlocking between SPS, LHC and CNGS and open issues

Safe Beam Parameters Safe Beam Parameters

Transmission systemTransmission system

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Summary of requirements

3 of the Parameters are built from 2 types of information:

E Int.

Safe Energy

X

BPFs X

SBFs X X

To be delivered with reliability to various systems

To be distributed over Long Distance

The Parameter transmission is less time critical (except for the Beam Presence Flags)

BETS

BCT1

BCT2

BETS

?

Ibeam2

Ibeam1

Energy

BLMBLMBLMBLMBLMBLMBLMBLMSafe Energy

Beam_Presence Flags

Safe_Beam Flags

INJExtI

BLMBLMBLMBLMBLMBLMBLMBIC

BLMBLMBLMBLMBLMBLMBLMBICBETS: Beam Energy Tracker System

BCT: Beam Current TransformerInjK: Injection Kicker System

ExtI: SPS Extraction Interlock

BIC: Beam Interlock Controller

INJInjK

LHC

modesBLMBLMBLMEXP.

Expected level of reliability: SIL2

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Proposal for distributing SLP via the timing system distribution

Energy and Beam Intensity values are transmitted to the Timing Generator (CTG) and to the SLP Generator

The SLP-G computes the Safe Beam Flags and the Beam Presence Flags

The SLP-G could be only used for critical cases: Beam Presence Flag should be guaranteed 1mS before Injection

The CTG sends regularly (every ~1sec) Parameters over the Timing network as “standard” frames

Safe Beam Parameters are received by the Users via dedicated VME board (“CTRS”) – ensuring safety

The SLP-G performs cross check in receiving Parameters via a “CTRS”

Ibeam2

Ibeam1

Energy

SLPGEN

BICBETS

BIC BCT

BIC BCT

CTG

CTRS

Timing

Distributed

Network

CTRS

CTRS

CTRS

BLMBLMBLMBLMBLMBLMBLMBLM

INJExtIBLMBLMBLMBLMBLMBLMBLMBIC

INJExtK

BLMBLMBLMEXP.

CTRS: Temporary name for a

VME Timing Receiver card

with dedicated SLP connections

Beam Presence Flags

CTRS

Safe Beam FlagsMKQA

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Conclusions

BIC is a tangible example of the fruitful collaboration within CO.

An “equipment project” done from the front end to supervision layer withing the CO group.

Concerning to the 2 next major milestones (CNGS tests and LHC sector test): We expect the required BICs will be installed, commissioned on time and be ready to participate.

Concerning Injection Inhibit requested by the Experiments: under study - Use similar architecture as LHC Beam Permit Loops with distributed BIC? - Or use another (and cheaper) solution?

Concerning Transmission of Safe Beam Parameters via Timing System Network - Valuable idea for completing a essential request in using existing resources - Opportunity to confirm once more how a closed collaboration within CO can be profitable for the involved teams.

Software support within CO has been good, and is required to continue for some time.

The electronic engineer (PhD student) is vital for the BIC projects.

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15

That’s all

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Guinea pig

back

Ginea pig