1. Machine Protection System Commissioning plans
Jan Uythoven Many thanks to the Members of the MPS Commissioning Working group, The MP Working Group and the LHC Commissioning Working Group. Special thanks to R. Schmidt and J. Wenninger

2. Outline Introduction The Commissioning of the MPS has started!
Plans for further Commissioning and follow-up
Conclusions
Jan Uythoven, AB /BT
MAC, 15th June 2007

3. Introduction Core elements of the LHC Machine Protection System
Beam Interlock System
Beam Dumping System
Beam Loss Monitoring System
Collimation System
Quench Protection System & Powering Interlocks
Injection System
Together with other elements they will need to guarantee the ‘safety’ of the LHC = equipment protection
Detect any equipment state or beam state that is potentially dangerous
Dump the beam before damage to equipment can occur
This safety of the system needs to be guaranteed (SIL 3) by
Good system design
Redundancy between subsystems
Redundancy within critical subsystems
Reliable system components
Careful follow-up during production and installation
Thorough commissioning of the system
Individual System Tests
System commissioning with and without beam
Jan Uythoven, AB /BT
MAC, 15th June 2007

4. The LHC Machine Protection System & Interfaces
Devices
Movable Detectors
Beam Loss
Monitors
BCM
Experimental Magnets
Collimator
Positions
Environmental
parameters
Safe Beam Parameter Distribution
LHC
Devices
LHC
Devices
SpecialBLMs
Safe
LHC
Parameter
Software
Interlocks
Sequencer
Operator Buttons
CCC
LHC
Experiments
Transverse Feedback
Beam
Aperture
Kickers
Collimation
System
Beam
Dumping System
Beam Interlock System
Safe
Beam
Flag
Injection Interlock
Powering
Interlocks
sc magnets
Powering
Interlocks
nc magnets
Magnet Current Monitor RF
System
Beam loss monitors
BLM
Beam
LifetimeFBCM
Access
System
Vacuum
System
Screens / Mirrors
BTV
Timing System
(Post Mortem Trigger)
Magnets
Power Converters
Monitors
aperture limits
(some 100)
Monitors in arcs
(several 1000)
QPS
(several 1000)
Power
Converters
~1500
AUG
UPS
Cryo OK
Doors
EIS
Vacuum
valves
Access
Safety
Blocks
RF Stoppers
Jan Uythoven, AB /BT
MAC, 15th June 2007

5. Commissioning has Started!
LHC Hardware Commissioning
Individual System Tests of LHC on the way
Experience of MPS equipment with the powering of the first LHC sector
SPS operation 2006 and 2007
Fast Magnet Current Change Monitoring in 2006 and later in 2007
Beam Interlock Systems following same design as LHC BIS being used for
CNGS and TT40/TT60 (towards LHC!) extraction interlocking
SPS ring interlock in 2007
LHC-like beam permit loop with clients connected to the dump through one of the 6 BICs connected to the loop
Safe Beam Flag for CNGS operation
Proof of the hardware and the design choices that have been made
Experience concerning commissioning and operations of systems similar to those that will be used in the LHC
Jan Uythoven, AB /BT
MAC, 15th June 2007

6. SPS Extraction towards to LHC Using SPS Extraction BIS
Inputs 8 to 14 are always maskable
Inputs 1 to 7 are always un-maskable
Mask status
Safe Beam Flag status
Software Interlock System Input
J.Wenninger
Jan Uythoven, AB /BT
MAC, 15th June 2007

7. SPS extraction BIS information
- PFN voltage
- BIC permit
- BETS window
- Beam
Timing of kicker, BIC permit and BETS:
Extr. 1
Extr. 2
Signals as seen on an oscilloscope for testing the interlock system
Beam Energy Tracking System considers dipole DCCT and HV of extraction kicker: Same hardware as for the LHC Beam Dumping System (but reverse logic)
Jan Uythoven, AB /BT
MAC, 15th June 2007

8. SPS extraction BIS information
Bar graph summarising the status of the interlock system
Time offset wrt start of cycle
Depth in seconds wrt
Time offset
Extraction permit switching to TRUE for extraction (3 ms wide)
Check this box to hold selected time range values
Check this box to freeze display
Jan Uythoven, AB /BT
MAC, 15th June 2007

9. Fast Magnet Current Change Monitor: MBG 4101M – Interlock Triggers at 10-4 change of I nominal
FMCM
=10E-4
3 FMCMs were operational last year and tested following well defined procedures. Modified CERN types (better adapted for pulsed magnets and additional controls interface) will be installed later this year
M. Zerlauth, Adapted DESY design
Jan Uythoven, AB /BT
MAC, 15th June 2007

10. LHC Hardware Commissioning D2.L8 presently under test
Quench event at
17018 ms
Presently being commissioned:
Quench Protection System & PIC system
Obtain experience with:
Tools for Post Mortem and Logging
Sequencer
Current ramp
Current starts to change ms
Quench heaters efficient ms
Quench loop reading PIC
17021 ms
Signal to BIC
Quench detected
17018 ms
Jan Uythoven, AB /BT
MAC, 15th June 2007

11. Plans for (further) Commissioning and follow-up
Thorough commissioning of the Machine Protection System:
Individual System Tests
Part of the LHC Hardware Commissioning
LHC Cold Check-Out period (machine closed, ready for beam)
System commissioning with beam
Different phases depending on beam intensity and beam energy
Special attention to the links between the different systems
Most hours of MPS testing before first beam, Some systems completely tested before beam 
Jan Uythoven, AB /BT
MAC, 15th June 2007

12. 100 % Tested before First Beam
LHC
Devices
Movable Detectors
Beam Loss
Monitors
BCM
Experimental Magnets
Collimator
Positions
Environmental
parameters
Safe Beam Parameter Distribution
LHC
Devices
LHC
Devices
SpecialBLMs
Safe
LHC
Parameter
Software
Interlocks
Sequencer
Operator Buttons
CCC
LHC
Experiments
Transverse Feedback
Beam
Aperture
Kickers
Collimation
System
Beam
Dumping System
Beam Interlock System
Safe
Beam
Flag
Injection Interlock
Powering
Interlocks
sc magnets
Powering
Interlocks
nc magnets
Magnet Current Monitor RF
System
Beam loss monitors
BLM
Beam
LifetimeFBCM
Access
System
Vacuum
System
Screens / Mirrors
BTV
Timing System
(Post Mortem Trigger)
Magnets
Power Converters
Monitors
aperture limits
(some 100)
Monitors in arcs
(several 1000)
QPS
(several 1000)
Power
Converters
~1500
AUG
UPS
Cryo OK
Doors
EIS
Vacuum
valves
Access
Safety
Blocks
RF Stoppers
Jan Uythoven, AB /BT
MAC, 15th June 2007

13. MPS Commissioning Working Group
Sub working group of the LHC Commissioning Working Group
Six meetings since November 2006,
20 Members:
Two people per main system
Engineers in charge
+ a few others
Webpage:
Mandate of Sub-Working Group on the Commissioning of the Machine Protection System
" Produce the detailed (=step by step) description of the commissioning of the LHC Machine Protection System and record the test results. "
The aim is to have a first version available by June / July 2007. 
...but was defined with circulating beam in mind for November 2007…
That is going to be tight….
Jan Uythoven, AB /BT
MAC, 15th June 2007

14. Detailed Procedure for Each System
Follow standard format for tests to be performed at the different phases
Identical to LHC HC strategy
To be published and approved by MPS comm. wg members
Specific tests are listed and tabulated
Jan Uythoven, AB /BT
MAC, 15th June 2007

15. Format of the Procedures
Jan Uythoven, AB /BT
MAC, 15th June 2007

16. Manufacturing and Test Folder (MTF)
Each Described Test is to be found back in the MTF system
The Status of the Test (passed, not passed, pending) and possible test reports are kept in this system
Identical system to what is being used for the LHC Hardware Commissioning
Many of the MPS tests will be done during the LHC Hardware Commissioning
Need to have compatible systems:
MPS commissioning procedures can refer to LHC HC procedures
Jan Uythoven, AB /BT
MAC, 15th June 2007

17. The Hardware Commissioning Manufacturing & Test Folder
B. Perea Solano
SECTOR
HC REGION
EQUIPMENT & EQUIPMENT GROUPS
Organization of the stored information within arborescence
Jan Uythoven, AB /BT
MAC, 15th June 2007

18. Validation of the tests performed to the equipment
External Properties (LDB) + Property Values (test variables) + Parameters (historical tracking)
Report documents, journals, EDMS, etc.
Jan Uythoven, AB /BT
MAC, 15th June 2007

19. Within MTF specific reports (=views) can be created to show the progress of the commissioning as an example by region for all the systems
Jan Uythoven, AB /BT
MAC, 15th June 2007

20. Status of Written Procedures
Some of the procedures exist and are well advanced, (almost) ready for distribution within edms
PIC, FMCM, Vacuum System
Advanced (already presented)
BIS system, BLM system
Next presentations
Injection System, WIC System
Outstanding main systems (but already worked upon)
Beam Dumping System, Collimation System
Other systems – need to be assigned to people to write procedures:
Experiments, RF & Feedback, Aperture Kickers & AC dipole, Safe Beam Flag etc.
After comments and approval to be described in MTF
Results of tests to be entered in MTF
Custom reports to be created to follow progress
Jan Uythoven, AB /BT
MAC, 15th June 2007

21. Different Procedures & Work in other Groups
LHC Hardware Commissioning WG:
Procedures per System – create for MPS if it does not exist
LHC Commissioning Working Group
‘Procedures’ are given per phase of LHC Commissioning
First Injection (pilot), energy ramp, increasing the intensity etc.
MPS commissioning
Procedures are per System, over all phases
Etc.
Cold Check-out
Hardware Commissioning
Injection
Ramp
Increasing Intensity
Beam Dumping System
RF System
Injection System
Collimation System
MPS Commissioning
LHCCWG & LTC
Jan Uythoven, AB /BT
MAC, 15th June 2007

22. Besides Procedures
MPS Commissioning Working Group is a forum to discuss different items related to the MPS commissioning and operation
Establishes a team of experts who can be called in during LHC operation when required
Training for Engineers In Charge
Jan Uythoven, AB /BT
MAC, 15th June 2007

23. Topics concerning the MPS under discussion in the different working groups
BLM operation
Which thresholds to set?
Proposed 30 % of quench level, for the arcs, this concerns operational efficiency and not machine protection
When and How to change BLM settings?
Are remote changes via ‘Management of Critical Settings’ more risky than a local change?
Procedure for disabling single BLMs when required
Protection settings (collimators) during the different phases of LHC commissioning
Relation with limits on beam parameters (beta beta, orbit etc.) during the different commissioning phases
Interlocking Strategy of the Aperture kicker and Ac Dipole
Based on keys and LHC Safe Beam Flag
Jan Uythoven, AB /BT
MAC, 15th June 2007

24. Conclusions
The Commissioning of the LHC Machine Protection System has already started
LHC Hardware Commissioning
SPS extraction and ring Beam Interlock System, FMCM
Proof of the hardware design choices that have been made
Experience concerning commissioning and operations of systems similar to those that will be used in the LHC
To guarantee a ‘Safe’ LHC operation, the commissioning procedures of the different MPS components
Are being described in detail following a fixed format, distributed and agreed upon
Will be followed up in the Manufacturing and Test Folder
A lot of work still to be done
On paper (procedures, MTF, reports)
In reality, following the paper work
The fruits of the work should be:
Limited confusion during LHC commissioning, with and without beam
Never see the destructive potential of the LHC being confirmed
Jan Uythoven, AB /BT
MAC, 15th June 2007