MDI towards technical design

Lau Gatignon

Very preliminary !To trigger discussions

QD0 quadrupoles

Supporttubes

MACHINE DETECTOR INTERFACE

Vacuum

IP FeedbackBeamcal+LumicalAnti-solenoid

+Stabilization + prealignment

Plus others ………..

CONTENTSIntroductionQD0 MagnetStabilizationQD0 support & pre-isolationPre-alignmentIP-FeedbackAnti-solenoidInstrumentationVacuumOverall integrationSafetyBackgroundsOther issues

R.Stapnes @ ACE meeting 2 February 2011

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

QD0 MagnetM.Modena, A.Vorozhtsov, A.Bartalesi, E.Solodko et al

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

SS

QD0 Stabilisation

A.Jeremie et al (LAPP/Annecy)

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

QD0 Support and Pre-isolatorA.Gaddi, H.Gerwig, F.Ramos et al

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

P

Pre-alignment (including QD0)H.Mainaud-Durand et al

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.

IP-FeedbackPh.Burrows, J.Resta Lopez et al

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

Anti-solenoidB.Dalena, A.Bartalesi, A.Sailer, A.Gaddi, H.Gerwig et al

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)

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

Vacuum in IR regionR.Veness et al

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

IntegrationH.Gerwig and many others

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

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

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

And everything else …….

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

Spare slides

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

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