MDI towards technical design
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Transcript of MDI towards technical design
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MDI towards technical design
Lau Gatignon
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Very preliminary !To trigger discussions
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QD0 quadrupoles
Supporttubes
MACHINE DETECTOR INTERFACE
Vacuum
IP FeedbackBeamcal+LumicalAnti-solenoid
+Stabilization + prealignment
Plus others ………..
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CONTENTSIntroductionQD0 MagnetStabilizationQD0 support & pre-isolationPre-alignmentIP-FeedbackAnti-solenoidInstrumentationVacuumOverall integrationSafetyBackgroundsOther issues
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R.Stapnes @ ACE meeting 2 February 2011
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MDI MEMBERSR.Appleby, A.Apyan, B.Bartalesi, M.Battaglia, E.Bravin, H.Burkhardt, P.N.Burrows, F.Butin, B.Dalena, K.Elsener,
A.Gaddi, M.Gastal, L.Gatignon, H.Gerwig, C.Grefe, E.Gschwendtner, M.Guinchard, A.Hervé, A.Jérémie,
Th.Lefèvre, L.Linssen, H.Mainaud-Durand, S.Mallows, M.Modena, J.Osborne, Th.Otto, C.Perry, F.Ramos, J.Resta
Lopez, A.Sailer, H.Schmickler, D.Schulte, N.Siegrist, J.Snuverink, E.Solodko, R.Tomas Garcia, D.Tommasini,
R.Veness, J.Vollaire, A.Vorozhtsov, V.Ziemann, F.Zimmermann
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QD0 MagnetM.Modena, A.Vorozhtsov, A.Bartalesi, E.Solodko et al
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QD0 MagnetConstruct and test short prototype
Gradient, field quality, vibration modes, radiation hardness,impact of external fields
Finalize design, construct and test full length models of QD0 and QF1
Gradient, field quality, stability
Design and build field measurement device for long and small apertures with required precision
Tests some prototype in beam line (ATF2, CERN-NA or other)In collaboration with stabilization team
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SS
QD0 Stabilisation
A.Jeremie et al (LAPP/Annecy)
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StabilizationFinalize choice of sensors (relative and absolute) and actuatorsAnalyze vibrational modes of final QD0 magnet and optimize
stabilization strategy accordinglyDesign and validate design of stabilization footFinalize integration in support tubeSimulation and test in realistic environment of stabilization
performanceCooperation with other luminosity stabilization systems
including data communication with other systems
Stabilisation for L* = 6 m solution
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QD0 Support and Pre-isolatorA.Gaddi, H.Gerwig, F.Ramos et al
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QD0 support and pre-isolationFinalize analysis and tests with pre-isolator prototypeBased on these results, finalize design of full-scale pre-
isolatorFinalize design of QD0 support tubes, taking into
account constraints from integrationConstruct and test one pre-isolator + support tube
assembly and validate performanceCombined test with stabilized QD0
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P
Pre-alignment (including QD0)H.Mainaud-Durand et al
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Pre-alignmentExecute agreed work packages with NIKHEF
Complete/update CDR chapter accordinglyTest and validate rigidity of CAM mover system and
demonstrate compatibility with stabilization requirementsAs a result make full simulation of RASNIK system with
realistic light transport channels through detectorValidate stretched wire approach for 500 m lengthFull design of stretched wire system, compatible with
integration and push-pull constraints.
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IP-FeedbackPh.Burrows, J.Resta Lopez et al
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IP FeedbackContinue tests and design to optimize latencyOptimize feedback algorithms
One or two sides, sensitivity to background (using detector MC)
Continue full simulations, including other feedback and feed-forward systems and isolation + stabilization
Studies of radiation hardness and B-field toleranceFinal engineering, taking into account integration
constraintsSolution for L*= 6 m implementation of QD0
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Anti-solenoidB.Dalena, A.Bartalesi, A.Sailer, A.Gaddi, H.Gerwig et al
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Anti-solenoidComplete a realistic design
Confirm choice of super-conducting technologyGood main solenoid compensationTake into account effect of permendur on field
configurationMinimize deformation of main solenoid field
Integration with detector layout and QD0 supportValidate that luminosity performance is adequateCoupling of anti-solenoid and main solenoid
Protection of QD0 (permendur, permanent magnets)
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InstrumentationIn collaboration with other working groups, arrive at
final design and integration of beam instrumentation relevant for the IP
This includes the instrumentation for the IP feedback, but also luminosity monitoring in the post-collision line
Follow-up of discussions related to polarization
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Vacuum in IR regionR.Veness et al
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VacuumFinal design of all vacuum systems involved, including
specification of all vacuum tubes/tanks, valves and pumps
Calculation of static and dynamic vacuum pressures in BDS, IR and post-collision lines
Validate that the impact on beam dynamics and luminosity is acceptable
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IntegrationH.Gerwig and many others
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IntegrationWork out in more detail the L*=6 m backup solution and
compare with L*=3.5 m (luminosity, acceptance, stabilisation, etc)Follow-up evolution of detector designs
For both detectors or eventual new detector designsIn particular impact of changes close to beam
Together with BDS teams, finalize choice of L*Can one agree on a single L*, which one?If needed, is it possible to have two different L* ?Work out solution with QD0 in the tunnel, first conceptually (1
year?), at a later stage also technically. Compare with L* = 3.5 m.
Design and construction of push-pull platforms Optimize time for push-pull operationDetailed integration with civil engineering and services
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SafetyAgree with safety and civil engineering on all general
safety aspects in the surface and underground areasFire safety, smoke extraction, ventilation, RP, escape routes, etcetera
Finalize RP simulations with final BDS and detector layoutsAre detectors self-shielding enough? Shielding cavern-garage, ...RP implications (if any) of muon backgrounds from BDSEvaluation of all accident scenarios. Requirements for MPS
Design shielding accordinglyEvaluate whether big shielding doors are necessary. Thickness?
Cryogenic safety issues
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BackgroundsCollaborate with BDS, Post-collision line and LCD to
evaluate and minimize backgrounds from machine, dumps and IP
Evaluate, together with BDS, the impact of muons and their cleaning on the IR in terms of RP safety and backgrounds
Confirm that Beamcal ad Lumical are sufficient to serve as masks against neutrons from the various dumps
Finalize integration of post-collision line in IR
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And everything else …….
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Other issuesContinue to coordinate between different working groups
Magnets, stabilization, post-collision line + dumps, BDS, LCD, CES
Establish link between detectors and CES group for specification of all services and their integration
Work towards full and more precise cost estimateProvide relevant chapters in Project Preparation PlanPrepare first version of Safety File
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Spare slides
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Topic Main contributorsQD0 magnet M.Modena, A.Bartalesi, E.Solodko, A.Vorozhtsov, QD0 stabilization A.Jérémie, G.Balik, B.Bolzon, L.Brunetti B.Caron,G.Deleglise,
L.PacquetQD0 support, pre-isolation A.Gaddi, H.Gerwig, F.RamosPre-alignment H.Mainaud-DurandIP Feedback P.N.Burrows, J.Resta Lopez, C.PerryAnti-solenoid B.Dalena, A.Bartalesi, M.Modena, H,Gerwig, A.GaddiInstrumentation Th.Lefèvre, E.BravinVacuum R.VenessSpent beam matters E.Gschwendtner, A.ApyanOverall integration H.Gerwig, A.Hervé, A.Gaddi, K.Elsener, N.SiegristShielding F,Butin, H.GerwigSafety J.Vollaire, S.MallowsCE and Services interface M.Gastal, J.OsborneBackgrounds A.Sailer, B.Dalena, H.BurkhardtOther topics K.Elsener, L.Linssen, M.Battaglia, D.Schulte, J.Snuverink,
R.Tomas Garcia, D.Tommasini, V.Ziemann, F.Zimmermann
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Stabilization (2)In particular (Annecy groups): Collaboration model
Continue characterization of vibration environment (correlations)
Continued sensor studies, in particular capacitive gauges and chemical sensors
Continued actuator studies and control loop optimization
Calculations on vibration modes of QD0 and support structures and combine those with pre-isolator and feedback loops in overall simulations
Contribute to integration with other IR equipment, supports, controls, etc (CERN responsibility)
Tolerance studies with respect to external magnetic fields and radiation
Construction of full prototype with test in real life (ATF2 or lab?)
Liaison with MDI and stabilization working groups. Documentation