BP & RS: BIS & SLP for AB/CO Review, 23 h Sept. 2005 1 Realisation of the interlocking between SPS, LHC and CNGS and open issues Beam Interlock System Beam Interlock System s s (BIS) (BIS) B.Puccio and R.Schmidt B.Puccio and R.Schmidt for the Beam Interlock Team for the Beam Interlock Team
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BP & RS: BIS & SLP for AB/CO Review, 23 h Sept. 2005 1 Realisation of the interlocking between SPS, LHC and CNGS and open issues Beam Interlock Systems.
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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
(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.
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.