Reinhard Schwienhorst Level3 Manager and CAM Michigan State University US ATLAS HLLHC Upgrade Project NSF FDR Review Washington DC September 1113 2019 Outline Technical Overview Deliverable Overview ID: 780430
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Slide1
WBS 6.6.1 sMDTTechnical
Reinhard
Schwienhorst
Level-3 Manager and CAM
Michigan State University
U.S. ATLAS HL-LHC Upgrade Project NSF FDR Review
Washington, DC
September 11-13, 2019
Slide2OutlineTechnical Overview
Deliverable Overview
R&D Progress since PDR
Specifications and InterfacesES&HQuality Assurance & ControlClosing remarks
Reinhard Schwienhorst, sMDT
US ATLAS HL-LHC FDR, September 11-13, 2019
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Slide3Technical Overview
Slide4Deliverable OverviewUS ATLAS HL-LHC FDR, September 11-13, 2019
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Reinhard
Schwienhorst
,
sMDT
HL-LHC MDT Readout System
6.6.1
6.6.3
6.6.4
6.6.5
Slide5sMDT Deliverable
This WBS covers the construction and test of small-diameter drift tubes (6.6.1.2, Michigan State University), which are assembled into
sMDT
chambers (6.6.1.1, University of Michigan) for the ATLAS Muon Spectrometer barrel inner station. This work includes equipping the
sMDT chambers with on-chamber gas system, in-plan alignment system, kinematic mounts, B- and T-sensors, and HV distribution boards covered with Faraday Cages.These are the Level-0 trigger and precision muon tracking detectors. In total, 98 chambers, corresponding to 52,000 tubes, are needed, and the US will build half of these.
US ATLAS HL-LHC FDR, September 11-13, 2019
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Reinhard
Schwienhorst
,
sMDT
Slide6Small-diameter MDT for HL-LHC
Replace monitored drift tubes (MDT) chambers in inner barrel of muon spectrometer with small-diameter (
sMDT
) and RPCallow for 3 station MDT trigger to improve trigger pT resolution
increase barrel trigger efficiency from 65% to 95%Crucial for HL-LHCphysics programAs part ofimprovements
to muon triggerAllow single-muontriggers at 20 GeVAllow di-muon
triggers at 10 GeV
US ATLAS HL-LHC FDR, September 11-13, 2019
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Reinhard
Schwienhorst, sMDT
Slide7sMDT
Inner barrel MDT chambers
in small-sector
will be replaced by sMDT+RPCsMDT: 1.5 cm diameterMDT is 3.0 cm diameter
1.66 m long8 BIS 1 chambers576 tubes per BIS1 chamber40 BIS2-6 chambers
472 tubes per BIS2-6 chamberRPCs will be integrated with
sMDT
to add an additional
trigger station
First
20% of sMDT chambers (BIS7/8) will be installed in Phase-1 (not part of this project)Other 80% of sMDT chambers (16 BIS1, 80 BIS2-6) will be installed in Phase-2Reinhard Schwienhorst, sMDT
, WBS 6.6.1
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Slide8US sMDT DeliverableSmall Muon Drift Tube (sMDT) chambers
Half of them to be fabricated in the US, rest at MPI
& Protvino
26,000 sMDT tubes constructed at MSUAbout 24,000 needed for the detector49 sMDT chambers constructed at University of Michigan
48 needed for the detector
Reinhard
Schwienhorst
,
sMDT
, WBS 6.6.18
Slide9US Deliverable: sMDT
High-pressure
(3 bar)
proportional drift tubessMDT chamber: 8 layer of tubes, in two multi-layers
on a spacer-frameGas systemAlignment system
High-voltage and readout system
Module 0 will be built and tested to certify construction sites
Tube site certification pre-MREFC, chamber site certification during MREFC
Reinhard
Schwienhorst, sMDT, WBS 6.6.1
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Slide10Technical SpecificationsWire location precision of 20 um in tube. Tube location accuracy of 25 um on chamber. Alignment platform position precision of 25 um on chamber.
Tubes: Wire tension to within 1%, dark current less than 1
nA
/meter with working gasLeak rate less than 10E-8 bar*l/sec tested at four barChambers: gas leak rate less than 25 mbar/day, noise rate less than 500 Hz, dark current less than number-of-tubes times 2 nA.
Reinhard
Schwienhorst
,
sMDT
, WBS 6.6.1
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Slide11R&D Progress Tubes
sMDT
tubes
Clean room enclosure set up
Tube crimping station set up
Wire tension test station set up
Leak test station set up
BMG tubes crimped and leak-tested successfully
Slide12Tube construction clean room
Slide13R&D Progress Chambers
Temperature and humidity controlled room set up & Large granite flat table surveyed with laser tracker
Designed and built an automatic glue-machine, set up chamber construction precision jigging on granite table
Built tube construction (wiring), test stations (tension, HV and leak tests). Built ~600 tubes (100 built locally, 500 built at MPI), and checked the wire tension long term stability
Built the first sMDT prototype chamber (BMG type, consists of 432 tubes)
Built and tested the gas system locally Performed chamber measurements on
Tube position precision measured, within specifications
Gas system installed and leak tested within specifications
Chamber dark current tested within specifications
Cosmic ray test on tracking efficiency and resolution
Reinhard Schwienhorst, sMDT, WBS 6.6.113
Slide14Chamber production
Tube position measurement with precision gauge
All tubes in a layer within 25μm, RMS 8.4
μm
Slide15Chamber production
Glue machine in action
https://drive.google.com/file/d/1SB_UrvNma_Y7D0cA7UwyUrU_eQZyFjvU/view
Slide16Chamber testing
Muon tracks in prototype chamber
Slide17Other progress since PDR
Critical Decisions taken
Final design review for tubes complete
Preliminary design review for chamber completeFinal design review for construction tooling completeFinal design review for chambers in November 2019Remaining pre-MREFC workModule 0 tube and chamber construction and site certification
Pre-MREFC – MREFC boundarySite certification (PRR) for tubes is the end of Pre-MREFCPurchasing of raw material and start of tube production is start of MREFC
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Schwienhorst
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sMDT
Slide18Specifications & Interfaces
Technical Specifications
Precision of wire in tube, tube on chamber, alignment platform
Dark current, gas leak rateFDR tubes: https://edms.cern.ch/document/2048104/1
PDR chambers and FDR assembly tooling: https://edms.cern.ch/document/2145116/1Interfaces and other technical requirements are documented in ATLAS TDR
Communication with MPI MunichSetup for tube and chamber construction and testing stationsConstruction and testing workflow
Construction of crimpers
Purchasing of material
Communication with
Nikhef
and ProtvinoAlignment optical readout, end plugs, faraday cagesFront End Electronics (Michigan) – TDC and CSM (monthly meetings and workshops)Electronics will be mounted on mezzanine cardUS ATLAS HL-LHC FDR, September 11-13, 2019
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Schwienhorst
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sMDT
Slide19ES&H
Safety is of the highest priority within the Project
Work at each institute adheres strictly to its ES&H policies
The BNL ES&H Liaison (L.
Stiegler) provides oversight and adviceInstitute contacts act as interfaces between their institute and BNLHazards for this activityHigh voltage
High pressure of non flammable gasHeavy machinery and heavy items - Crane for chamber assembly (UM only)All work done in compliance with safety policies of the institutes and CERN
US ATLAS HL-LHC FDR, September 11-13, 2019
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Reinhard
Schwienhorst
,
sMDT
Institute
Institute ES&H Contact
MSU
Kevin
Eisenbeis (http://ehs.msu.edu
)UMichDavid Laird (http://www.oseh.umich.edu)
Slide20Quality Assurance & Control
Quality Assurance
QA will already have been developed by the start of the MREFC
Quality ControlAlignment precision – wire, tubes on chamber, alignment platformsLeak rate – tube and chamberDark current – tube and chamberTest each
sMDT tube after construction and before gluing into chamberTest each chamber after construction and after arrival at CERNQA/QC DocumentsDocdb HL-LHC-docDB-848
US ATLAS HL-LHC FDR, September 11-13, 2019
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Schwienhorst
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sMDT
Slide21Closing RemarkssMDT project is progressing well
On track to start construction in April 2020
Build chamber 0 starting later this year
Site certification for MSU in March 2020Budget and schedule well understoodBased on experience from BMG at UM, MSU and MPI
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Schwienhorst
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sMDT
Slide22BACKUP
Slide23Bio Sketch of L3 ManagerReinhard Schwienhorst
, Professor at Michigan State University
On ATLAS since 2006
Previous experience in L1 Calorimeter trigger, on-call expert and upgradeL3 manager for Phase 1 TDAQ upgrade project: L1 Calorimeter trigger fiber-optic plantATLAS reviewer for other Phase 1 L1Calo upgradesHL-LHC muon upgrades
L3 manager for HL-LHC sMDT tube and chamber constructionATLAS muon reviewer for RPC upgrade
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Schwienhorst
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sMDT