Lau Gatignon Very preliminary To trigger discussions QD0 quadrupoles Support tubes MACHINE DETECTOR INTERFACE Vacuum IP Feedback Beamcal Lumical Antisolenoid Stabilization prealignment ID: 780558
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Slide1
MDI towards technical design
Lau Gatignon
Slide2Very preliminary !
To trigger discussions
Slide3QD0 quadrupoles
Support
tubes
MACHINE DETECTOR INTERFACE
Vacuum
IP Feedback
Beamcal
+
Lumical
Anti-solenoid
+Stabilization +
prealignment
Plus others ………..
Slide4CONTENTS
Introduction
QD0 MagnetStabilization
QD0 support & pre-isolation
Pre-alignment
IP-Feedback
Anti-solenoid
Instrumentation
Vacuum
Overall integration
SafetyBackgroundsOther issues
Slide5R.Stapnes
@ ACE meeting 2 February 2011
Slide6Slide7Slide8Slide9Slide10MDI MEMBERS
R.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
Slide11QD0 Magnet
M.Modena
,
A.Vorozhtsov
,
A.Bartalesi
,
E.Solodko
et al
Slide12QD0 Magnet
Construct 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
Slide13SS
QD0
Stabilisation
A.Jeremie
et al (LAPP/Annecy)
Slide14Stabilization
Finalize choice of sensors (relative and absolute) and actuators
Analyze vibrational modes of final QD0 magnet and optimize stabilization strategy accordingly
Design and validate design of stabilization foot
Finalize integration in support tube
Simulation and test in realistic environment of stabilization performance
Cooperation with other luminosity stabilization systems
including data communication with other systems
Stabilisation
for L* = 6 m solution
Slide15QD0 Support and Pre-isolator
A.Gaddi
,
H.Gerwig
,
F.Ramos
et al
Slide16QD0 support and pre-isolation
Finalize analysis and tests with pre-isolator prototypeBased on these results, finalize design of full-scale pre-isolator
Finalize design of QD0 support tubes, taking into account constraints from integration
Construct and test one pre-isolator + support tube assembly and validate performance
Combined test with stabilized QD0
Slide17P
Pre-alignment (including QD0)
H.Mainaud
-Durand et al
Slide18Pre-alignment
Execute agreed work packages with NIKHEF
Complete/update CDR chapter accordinglyTest and validate rigidity of CAM mover system and demonstrate compatibility with stabilization requirements
As a result make full simulation of RASNIK system with realistic light transport channels through detector
Validate stretched wire approach for 500 m length
Full design of stretched wire system, compatible with integration and push-pull constraints.
Slide19IP-Feedback
Ph.Burrows
,
J.Resta
Lopez et al
Slide20IP Feedback
Continue 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 tolerance
Final engineering, taking into account integration constraints
Solution for L*= 6 m
implementation of QD0
Slide21Anti-solenoid
B.Dalena
,
A.Bartalesi
,
A.Sailer
,
A.Gaddi
,
H.Gerwig et al
Slide22Anti-solenoid
Complete a realistic design
Confirm choice of super-conducting technology
Good main solenoid compensation
Take into account effect of permendur on field configuration
Minimize deformation of main solenoid field
Integration with detector layout and
Q
D0 support
Validate that luminosity performance is adequate
Coupling of anti-solenoid and main solenoid Protection of QD0 (permendur, permanent magnets)
Slide23Instrumentation
In 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 lineFollow-up of discussions related to polarization
Slide24Vacuum in IR region
R.Veness
et al
Slide25Vacuum
Final 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 linesValidate that the impact on beam dynamics and luminosity is a
cceptable
Slide26Integration
H.Gerwig
and many others
Slide27Integration
Work out in more detail the L*=6 m backup solution
andcompare with L*=3.5 m (luminosity, acceptance,
stabilisation
,
etc
)
Follow
-up evolution of detector designs
For both detectors or eventual new detector designs In 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
Slide28Safety
Agree with safety and civil engineering on all general safety aspects in the surface and underground areas
Fire safety, smoke extraction, ventilation, RP,
escape routes, etcetera
Finalize RP simulations with final BDS and detector layouts
Are detectors self-shielding enough? Shielding cavern-garage, ...
RP implications (if any) of muon backgrounds from BDS
Evaluation of all accident scenarios. Requirements for MPS
Design shielding accordingly
Evaluate whether big shielding doors are necessary. Thickness?Cryogenic safety issues
Slide29Backgrounds
Collaborate with BDS, Post-collision line and LCD to evaluate and minimize backgrounds from machine, dumps and IPEvaluate, together with BDS, the impact of
muons and their cleaning on the IR in terms of RP safety and backgroundsConfirm that
Beamcal
ad
Lumical
are sufficient to serve as masks against neutrons from the various dumps
Finalize integration of post-collision line in IR
Slide30And everything else …….
Slide31Other issues
Continue to coordinate between different working groups
Magnets, stabilization, post-collision line + dumps, BDS, LCD, CESEstablish link between detectors and CES group for specification of all services and their integration
Work towards full and more precise cost estimate
P
rovide relevant chapters in Project Preparation Plan
Prepare first version of Safety File
Slide32Spare slides
Slide33Topic
Main contributors
QD0 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-isolationA.Gaddi
, H.Gerwig,
F.Ramos
Pre-alignmentH.Mainaud
-DurandIP FeedbackP.N.Burrows, J.Resta
Lopez, C.PerryAnti-solenoidB.Dalena
, A.Bartalesi, M.Modena, H,Gerwig,
A.GaddiInstrumentationTh.Lefèvre, E.Bravin
VacuumR.VenessSpent beam matters
E.Gschwendtner,
A.ApyanOverall integration
H.Gerwig, A.Hervé, A.Gaddi, K.Elsener
, N.SiegristShieldingF,Butin,
H.GerwigSafetyJ.Vollaire,
S.MallowsCE and Services interfaceM.Gastal, J.Osborne
BackgroundsA.Sailer, B.Dalena,
H.BurkhardtOther topicsK.Elsener,
L.Linssen, M.Battaglia, D.Schulte
, J.Snuverink,R.Tomas Garcia,
D.Tommasini, V.Ziemann, F.Zimmermann
Slide34Stabilization (2)
In particular (Annecy groups):
Collaboration modelContinue 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 radiationConstruction of full prototype with test in real life (ATF2 or lab?)Liaison with MDI and stabilization working groups. Documentation