stabilisation wp status ctc december 2012
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Stabilisation WP Status CTC December 2012. The research leading to these results has received funding from the European Commission under the FP7 Research Infrastructures project EuCARD. Outline. Manpower & collaboration status Review status 2012 MBQ stabilisation and Nano-positioning status - PowerPoint PPT PresentationTRANSCRIPT
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STABILISATION WP STATUSCTC DECEMBER 2012
The research leading to these results has received funding from the European Commission under the FP7 Research Infrastructures project EuCARD
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Outline
K.Artoos, CTC December 2012
Manpower & collaboration status Review status 2012
MBQ stabilisation and Nano-positioning status
Final focus status Other
Plans for 2013, objectives
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Manpower + collaborationstatus
K.Artoos, CTC December 2012
CERN S.Janssens (PhD > Fellow) 100%K.Artoos (100% > 50%)M. Esposito (50%, 12/2012)P. Fernandez Carmona (August 12)Designers: R. Leuxe, C. Eymin (jobs)
MBQ stabilisation + nano-pos.Sensor development
LAPP/Symme
A.Jeremie, G.Deleglise 30%L.Brunetti, J.Allibe (=> July 2013)G.Balik (=> Sept. 2014), J.P. Baud 50%SYMME: B.Caron
Final focus stabilisationSensor development
ASL (ULB)
Chr. Collette + Master students“Brains back to Brussels” Grant until end 2013 (might be extended)
Controller design MBQ & Final FocusSensor R&DNetworking
CEA/IRFU
F. Ardellier Desages, M. Fontaine, N. Pedrol Margaley (K contract finished)
Optical measurement methodsCalibration absolute reference
To be streamlined at CLIC workshop
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LAPP/Symme Budget: EuCARD will end soon and not in EuCARD2, ANR on ATF2 just
ended, CERN White-Paper finished so no more outside resources available; IN2P3 Budget will probably be reduced again after 30% cut last year; Marie-Curie PACMAN, only a few months of a PhD (if it passes)
LAPP/Symme Space: will move soon in Maison de la Mecatronique => about the same
space available as now, but nearer to SYMME
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Manpower + collaboration status (2)
CERN Networking with NIKHEF (PhD Stef, TNO, MI Partners, TU Delft,… Synergy sensor development with LIGO, VIRGO. Contact Christophe Colette
Action CLIC : new collaboration agreements + K contracts
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Review status 2012MBQ Stabilisation
Type 1
Collocated pair
X-y proto
Seismometer FB max. gain +FF (FBFFV1mod): 7 % luminosity loss(no stabilisation 68 % loss)
Courtesy J. Snuverink, J. Pfingstner et al.
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Inertial Reference mass
No stabilization 68% luminosity lossInertial ref. mass 1Hz (V3mod)
11%
Inertial ref. mass 1Hz + HP filter (V3)
3%
Inertial ref. mass 7 Hz (V3 mod 1)
Orbit fb optimised V3: 0.7%
K.Artoos, CTC December 2012
Courtesy J. Snuverink et al.
Stef Janssens
C. Collette
“Comparison of new absolute displacement sensors”, C. Collette et al. , ISMA 2012
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Stabilization with Interferometer based geophone
Interferometer based geophone built and tested:-Very high sensitivity, high resolution-Wider bandwidth-Proof of concept
Issue:
Due to higher bandwidth, actuator slew rate gives unstabilities in the loop
-> New batch of actuators have a higher slew rate
Measured open loop on x-y guide
Stef Janssens
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X-y prototype Nano positioningResolution, precision, accuracy
Capacitive sensor3 beam interferometer
Optical ruler
Actuators equipped with strain gauges
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Comparison sensors
M. Esposito, IWAA 2012 Fermilab
Sensor Resolution Main + Main -
Actuator sensor 0.15 nm No separate assembly
ResolutionNo direct measurement of magnet movement
Capacitive gauge 0.10 nm Gauge radiation hard Mounting tolerancesGain change w. Orthogonal coupling
Interferometer 10 pm Accuracy at freq.> 10 Hz
CostMounting toleranceSensitive to air flowOrthogonal coupling
Optical ruler 0.5*-1 nm Cost1% orthogonal couplingMounting toleranceSmall temperature driftPossible absolute sensor
Rad hardness sensor head not knownLimited velocity displacements
Seismometer (after integration)
< pm at higher frequencies
For cross calibration
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X-y positioning: Study precision, accuracy and resolution
The precision required by beam dynamics for nano positioning (0.25 nm) was demonstrated with optical rulers in a temperature stable environment and for simultaneous x and y motion.Absolute accuracy can be calibrated within 10-8 m.Tests in a temperature unstable environment will be made (ISR re installation)
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Combination of fast positioning and stabilization
Combining positioning and stabilization:
-Making error to requested position R as small as possible-Additional displacement measurement for low frequency to DC-integrator at low frequency to eliminate drift-Simulations function -> To be implemented on x-y prototype Stef Janssens
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Controller ElectronicsHybrid Second generation
2 d.o.f. Position input terminal Switchable
(displacement/velocity) Manual or Digital gain/filter
control Improved radiation hardness
(choice components Tested for SEU and induced
noise at H4HIRRAD FPGA control digital part
started
P. Fernandez Carmona
H4IRAD test stand
No damage nor SEU after 18 GyTest not completeReport to be finalized
Piezo amplifier not radhard
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Preparation test modules and CLEX:Two type 1 MBQ and one Type4
• Flexural joints machined. Actuators with amplifiers and sensors to be delivered January 2013.
• Electronic boards in construction, 80% of components received
• Second generation electronics built (more radhard) tested at H4IRRAD
• Design Type 1 and type 4 mechanical support ongoing (70% ready)
• Demonstrators T1 and T4 planned for April 2013.
• Issue: Reduction manpower stabilisation MME in 2013EUCARD deliverable
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Analytical & FE results
M. Esposito, IWAA 2012 Fermilab
Hz kh[N/μm]
Vt kv[N/μm]
4-bar mode θ mode Vertical modef
[Hz] shape f [Hz] shape f
[Hz] shape
Without xy
guide
Analytical 0.21 203 9.2 255 319
Ansys classic 0.21 204 9.2 255 319Ansys
WB 0.21 203 8.3 245 312
With xy
guide
Analytical 35 229 153 310 339
Ansys classic 44 225 125 275 327Ansys
WB 38 220 145 303 336Type 1 MBQ with xy guide
kh=69[N/μm]
kv=227[N/μm]
119
[Hz]
303[Hz]
319[Hz
]
Longitudinal stiffnessWithout xy guide0.03 N/μm
With xy guide(pins totally fixed on 1 end)278N/μm
With xy guide(pins fixed to steel plates)48 N/μm
Longitudinal modeWithout xy guide3.4 Hz
With xy guide(pins totally fixed on 1 end)280 Hz
With xy guide(pins fixed to steel plates)65 Hz
“Development of advanced mechanical systems for stabilization and nano-positioning of clic main beam quadrupoles” , IWAA2012
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Andrea JEREMIE CTC 12/12/12
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RMS ground at 4 Hz: 5 nmRMS on foot at 4Hz: 0,6nmRMS ratio: 8,3
Attenuation up to 50dB between 1,5-100Hz1,5Hz-100Hz
0,6 nm
5 nm
For all tests done, limited by sensor noise
Final Focus stabilisation
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Final Focus Stabilisation
K.Artoos, CTC December 2012
[C. Collette et al. “Control strategies for the final focus of future linear
particle collider” Nuclear Instruments and Methods in Physics Research, Section A Vol. 684 (August 2012), pp. 7-17] Test set-up with carbon cables and IFF
C. Collette et al.Presentation MDI this Friday
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CMS synchronous Final focus ground motion measurements
Other subjects:
M. Guinchard
Equipment available and validatedOrganise access, availability people
ATF2 Ground motion measurementsCabling sensors doneNoise tests long cables doneDAQ programming doneElectronics powering doneAll sent to LAPP
Preparation displacement measurements
0.2 µm12 mm
K.Artoos, CTC December 2012
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K.Artoos, CTC December 2012
Objectives 2013
CERN “team”: Build and test 3 MBQ modules Type 1 ISR + CLEX (precursor PACMAN) Type 4 ISR + Test moduleType 1 Test module
Outsource:* Construction of adapted sensors(transfer function, AE compatible, noise level)High stiffness actuators (done)* Collocated sensor-actuatorsCharacterization existing systems? Study pre-isolator Final FocusHigh load high range high resolution actuators* Construction electronicsImplementation of custom digital slow controlConstruction mechanics: flexural joints, monolithic , machining, assembly,…Displacement sensors and their implementation Development Radiation hard components
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K.Artoos, CTC December 2012
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Budget 2013
Purchase 12 piezo actuators with amplifiers 68 kCHF (Delivery 15th January)Usinage + achat Type 1 TM, Type 1 ISR, Type 4 ~80000 CHFTravelling KEK, installation GM measurements, Transport equipment (stay 2 weeks 2-3 people): 30 kCHFInstrumentation optical rulers 20 kCHFComponents mounting electronics 20 kCHF
Subcontracting :Inertial mass : 150 kCHF ?Study pre-isolator: 100 kCHF
Budget estimation to be completed with information from collaborations
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SPARES
K.Artoos, CTC December 2012
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Five R&D themes :
K.Artoos, CTC December 2012
1. Performance increase →Reach requirements from higher background vibrations + include direct forces
→ Increase resolution (Final focus)2. Compatibility with environment → Radiation, magnetic field,
Operation, Temperature3. Cost optimization → Standardize and optimize
components, decrease number of components, simplify mounting procedures,…
4. Overall system analysis → Interaction with the beam-based orbit and IP feedback to optimise luminosity Integration with other CLIC components
→ Adapt to changing requirements5. Pre-industrialization → Ability to build for large
quantities
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Extra slide:Measured slew rate of actuator
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Bill of Materials Amplifiers
LMP2022MA: Zero Drift, Low Noise, EMI Hardened Amplifier AD8230YRZ: Zero-Drift, Precision Instrumentation Amplifier AD8691AUJZ: Low Cost, Low Noise, CMOS Rail-to-Rail Output
Operational Amplifier Power regulator ICs: TPS76550, REG1117-2.5, TPS72325,
UCC284-5 FLASH Digital potentiometers: AD5231, AD5204 Diodes: BAV199 Capacitors: Tantalum Resistors: Thin film 1% Potentiometers: Cermet Digital slow control
National Instruments PXI with DAQmx card FPGA: Spartan 6 evaluation board (under development)
P. Fernandez Carmona, RadWG meeting, Geneva, 17 January 2012
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Controller electronics: Hybrid
2 analogue chains+ positioning offset
Local electronics ADCs digitize signalsFor remote monitoring
Communication to remote control center with optical fiber
K.Artoos, CTC December 2012
SPIP. Fernandez Carmona(until end of August)
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X-y Positioning
1&2 Parasitic roll
M. Esposito, IWAA 2012 Fermilab
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K.Artoos, CTC December 2012
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Inertial reference mass proto (v3): With interferometer/with capacitive gauge