response to reviewer questions - indico.fnal.gov
TRANSCRIPT
ResponsetoReviewerQuestions
ColinJessop,BobHirosky,AlbertoBelloni
1. Providealistofscheduledrivers.
• LS3.Dissassembly ofECAL,installationofnewelectronics,andreassemblyrequires26months.Electronicsmustbereadyafterdissassembly whichis6monthsintoLS3
• NSFfundingprofile• deliveryoflpGBTx• deliveryofVFEASIC• roadmapforfinalFPGAs? (Considerupto1yr floatinschedulefordeliveryofnewgenerationFPGAs,ifasignificantcostadvantageisexpected?)
2. Clarifydis-assemblyandre-assemblyresponsibilitiesforBarrelECAL,liststepstobedoneandresponsibilities(NB.Installationremovedfromscopefollowingdiscussionthismorning)
• Removetracker• DisassemblyofECALservices(Coolinglines,cabling)(CERNTC)• Removalofthesupermodule (SM)withthe“enforneur”(CERNTC)• RemovalofcoolingandservicesonbackofSMthatimpedeextractionofVFE,FE(CERNTC)
• ExtractVFE,FE,LVR- replaceVFE,FE,LVR(CERNTC)• InstallopticalfibersonFEandSM(USECAL)• Installcooling,powerdistributiononSM(CERNTC)• Re-insertSM(CERNTC)• Connectservicesexceptfibers(CERNTC)• Connectfibersandcheckconnections,testreadoutchain(USECAL)
3. Providealistofkey R&Dmilestones/tasks tobecompleted priortoachievingtechnicalreadinessforconstruction(aswillbeneeded torespondtoNSFChargequestion2f).Arethegoalstoreducecost,improveperformance,mitigaterisk,demonstrateapproach?Demonstrationofapproach• Verifysignal/timingsimulationsforanalogFEsimulations• DC/DCconvertorperformance inprecisionanalogsystem• proofofconcept forVFEanalog/digitaldesign• proofofHW/FW-basedspikesuppressionstrategies• prototypes forVFE/FE/backendsystems• verificationoffullreadoutchainandperformanceintestbeamstudiesMitigaterisk• evaluateperformanceofQIE-basedfrontend• evaluateFEboardrequirementsforscenariosw/non-lowpower10Gblinks(orlegacy4.8Gblinks)• Improveperformance• proofofconcept forO(10ps)timingdistribution forfrontendchannelsReducedcost• demonstratefeasibilityofmergingTCC/DCC/CCSsystemsinasinglecard
4. Noschedulecontingencywaspresented.Provideastatementofschedulecontingencyandthecriticalpath.
• Therewasnoexplicitschedulecontingencyconsidered(justcost).Implicitlytherewasalready6monthsWeneedtoworkonthisbutwethinkwecanadjusttocreate~1
year.Nowinstallationinnolongerpartoftheprojectweneedtospecifytesting@CERNtoconcludethedeliverable
IntermsoftheVFEthereisabout1.5yrs floatinschedule.
5. Provideafullbreakdown(including labor)ofthecostpresented for402.03.03.02(slides7-9). PresentationshowsM&SandeffortFTE’s– whateffortratewasused.
7
M&SforFE/OpticalLinks402.03.03.02
Director'sReview-- BarrelCalorimeterOverview ColinJessop,Febuary22016
Item Desc SourceofEstimate
Quantity Cost($K)
Board PCBandVFEconnectors
Original costscaled
2761 110
FENIXchip ASIC forFrontEndDataeXtraction
Present chipScaledto130nm
13804 127
FENIXChipsubmission
ASIC forFrontEndDataeXtraction(submission cost)
QuoteviaCERNengineering
1 414
GBTlinkcontroller Connects FENIXToopticalTx/Rx
QuotefromCERNengineering
8284 377
FE components Boardcomponents Originalcostscaled 2761 88
Optical LinkTx/Rx Lasertransmitter/PINreceiver
VendorQuote 10564 292
OpticalFibers Optical Fibers Vendor Quote 10564 692
Total 2100
Theseare$in2016.Escalateto50%2023(1.23)and50%2024(1.27)toget$2572K
8
LaborforFE/Opticallinks(402.03.03.02)
Director'sReview-- BarrelCalorimeterOverview ColinJessop,Febuary22016
USECALemploystwoRussianEngineersandatechnicianatCERNtomaintaintheexistingFibers,LVandLasermonitoringsystem.
Sasha Singovski(Engineer)
Sasha Dolgopolov(Engineer)
David Bailleux(technician)
CQ2.1,2.5
WillsupportwithatechnicalstudentfromNortheasterneveryyearfor6monthstodotesting,testbeamsetc
0.2FTE(UNIV_EErate)peryear2017-2024
402.03.03.02 EB R&D QIE Labor
FNAL_EE 30 0 0 0 0 0 0 0 0 0 0 InvetsigateQIEpossibility
402.03.03.02 EB R&D QIE M&S 20 0 0 0 0 0 0 0 0 0 0 TesingQIEforuseinVFE
402.03.03.02 EB R&D FE/OL Labor
UNIV_EE 0 38 38 38 19 0 0 0 0 0 0
0FE/Opticallinks.2FTEengineeringperyear
402.03.03.02 EB R&D FE/QL Labor
UNIV_UG 16 15 15 15 7.5 0 0 0 0 0 0
technicalstudentfpr6months
402.03.03.02 EB R&D FE/OL M&S 15 15 15 15 7.5 0 0 0 0 0 0
SuppliesforFE/opticallinksdevelopment
402.03.03.02 EB R&D FE/QL Travel 0 6 6 6 3 0 0 0 0 0 0
COLAfortechnicalstudent
CostingforR&Dphaseof402.03.03.02
WBSDetector Phase Item
CostType
Costsubtype 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 Notes
Costinghereisin2016dollarsbeforeescallation
IncludesR&DontestingQIEandDC/DCconverters.
Laborincludedengineeringat0.2FTEUNIV_EE(Singovski,Dolgoplov),undergraduatetechnicalstudentfromNorthEasterntoSupportengineering.M&SforpurchaseofGBTx/Versalin,FabofFEboards
WBSDetector Phase Item
CostType
Costsubtype 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 Notes
402.03.03.02 EB
Construction FE/OP Labor
UNIV_EE 0 0 0 0 19 38 38 38 38 38 0
0.2FTEperyearfor6years
402.03.03.02 EB
Construction FE/OP Labor
UNIV_UG 0 0 0 0 7.5 15 15 15 15 15 0
Undergradstudentfortesting
402.03.03.02 EB
Construction FE/OP M&S 0 0 0 0 7.5 15 15 15 15 15 0
Regularsupplies
402.03.03.02 EB
Construction FE/OP M&S
Production 0 0 0 0 0 0 550 550 0 0 0
ProductionofFECards
402.03.03.02 EB
Construction FE/OP M&S
Production 0 0 0 0 0 0 500 500 0 0 0
ProductionofOpticalLinks
402.03.03.02 EB
Construction FE/OP Labor
CERN_TC 0 0 0 0 0 0 60 60 60 0 0
Testingandvalidtaion ofproducedFEandopticallinks0.5FTEtechnicianfor3years
Costinghereisin2016dollarsbeforeescallation
Costingforconstructionphaseof402.03.03.02
7. DescribethehowthecostsharingishandledbetweenNSF,DOE,andM&Ofortechnicalpersonnel?
• ECALisinNSFscopesowilluseusualSoW’s.TechnicalpersonnelatCERNarefundedbyM&O.Divisionoflaboris80:20betweenopsandupgradeandwillbeseperately funded.
HCAL
1. Providealistofscheduledrivers
• LS3schedule• Establishmentofradhardscintillator(needavarietyoftestsbecauseofratedependence)
• Delivery ofscintillator(672m2) andWLSfiber
• DevelopmentofcommoncorecardforBEE(fromECAL)
2. Clarifydis-assemblyandre-assemblyresponsibilitiesforBarrelHCAL,liststepstobedoneandresponsibilities.(NB:Dissassemblyandinstallationnowmovedtooperationsfollowingdiscussionthismorning)
1. Removeopticalcables(save)(USHCAL)2. RemoveelectronicsfromRBX(USHCAL)3. RemoveRBX(USHCAL)4. De-cableECALandTracker(CERNTC)5. Removelayer0(USHCAL)6. RemovetrackerandECAL(CERNTC)7. RemovealllayersofHBmegatiles (USHCAL)
2. Clarifydis-assemblyandre-assemblyresponsibilitiesforBarrelHCAL,liststepstobedoneandresponsibilities.
1. InstallECAL2. Installtracker3. Installallmegatiles4. InstallRBX,electronics5. Re-installHBopticalcables6. RadioactivesourcetestHB7. Re-cableECAL,tracker
Megatile insertion into wedge• Megatiles have clearance into absorber slot, spring loaded for
positioning (No disassembly of absorber required)
2/3/16 Presenter | Presentation Title 16
Megatile removal• FEA of overall HB shows less than 0.4mm
maximum deformation from ideal shape. This deformation is gradual, not local.
• So deformation of slot should be less than 0.4mm• Megatile has 2mm design clearance. So no binding.
2/3/16 Presenter | Presentation Title 17
3.Providealistofkey R&Dmilestones/tasks tobecompleted priortoachievingtechnicalreadinessforconstruction(aswillbeneeded torespondtoNSFChargequestion2f).Arethegoalstoreducecost,improveperformance,mitigaterisk,demonstrateapproach?
• Findradiation-tolerantscintillator:demonstrateapproach; thereareindicationsthatthecurrentplasticscintillatorwillsufferforaLYreductionofafactorof30-40inthefirstlayer,theplasticsathand(commercialEJ-260,greenscintillator;over-dopedEJ-200,bluescintillator)bothofferasignificantincrementinLYwhenirradiated;weintendtoinvestigateacombinationofthetwoapproaches(green,over-doped)andcheckifwecanobtainaLYincreasethatallowsustomaintainthesameHCALperformance
• Optimizesegmentation(bothlongitudinalandtransverse):mitigaterisk
4. Noschedulecontingencywaspresented.Provideastatementofschedulecontingencyandthecriticalpath.
• Intheschedulewehadplannedtofinishproductionaround6monthsbeforeLS3
• TheHCALmodulescannotberemovedandreplaceduntilthetrackerandECALhavebeenremoved(~12months).
• Henceimplicitlythereis~18monthsschedulecontingency
5. Providebackupinformationonthecostestimateformajorcostelements.
21
M&SforScintillator/Fiber/ODUproduction(402.03.04.02)
Director'sReview-- BarrelCalorimeterOverview ColinJessop,Febuary 22016
Costin2002forfullHBwas$1.37.First6layersare30%ofHBsox0.3.Scaleto2022Dollarsx(1.03^20=1.8)=$740K.Additional$113Kfortestfixturesforassembly&QA
Contingencyonestimateis30%
CQ2.1,2.5
22
LaborforScintillator/Fiber/ODUproduction(402.03.04.02)
Director'sReview-- BarrelCalorimeterOverview ColinJessop,Febuary22016
AssumeassemblyandtestingtakesplaceatFNAL
OriginalHCALbarrelconstructionrequired1FTEFNALmechanicalengineer,25FTEFNALTech,33FTEUniversitytech
Firstsixlayersare30%oforiginal
Thistotalincludedanumberofproblemswhichweresolvedsox2/3forexperience
Gives:0.2FTEFNALengineer5FTEFNALtech6Univ Tech.
Costed 0.2FTEFNALengineer:3FTEFNALtech:7FTEUniv Tech
(Note:Contingencyontheseestimatesis50%)
CQ2.1,2.5
402.03.04.02 HB R&D
Scint/WLS Labor
UNIV_TC 20 20 0 0 0 0 0 0 0 0 0
R&DonnewScintillator/WLS
402.03.04.02 HB R&D
Scint/WLS M&S 30 30 0 0 0 0 0 0 0 0 0
R&DonnewScintillator/WLS
402.03.04.02 HB R&D
Scint/WLS Travel 10 10 0 0 0 0 0 0 0 0 0
R&DonnewScintillator/WLS
402.03.04.02 HB OPC
Scint/WLS Labor
UNIV_TC 0 0 20 20 0 0 0 0 0 0 0
R&DonnewScintillator/WLS
402.03.04.02 HB OPC
Scint/WLS M&S 0 0 30 30 0 0 0 0 0 0 0
R&DonnewScintillator/WLS
402.03.04.02 HB OPC
Scint/WLS Travel 0 0 10 10 0 0 0 0 0 0 0
R&DonnewScintillator/WLS
402.03.04.02 HB
Construction
Scint/WLS M&S 0 0 0 0 100 0 0 0 0 0 0
Scintillator/WLSConstructionfabricationandtestingfacility@FNAL
402.03.04.02 HB
Construction
Scint/WLS M&S
production 0 0 0 0 0 370 370 0 0 0 0
Scintillator/WLSConstructionProduction
402.03.04.02 HB
Construction
Scint/WLS Labor
FNAL_ME 0 0 0 0 17 17 17 17 0 0 0
FNALMechanicalEngineertooverseeconstruction0.05FTEperyear
402.03.04.02 HB
Construction
Scint/WLS Labor
FNAL_TC 0 0 0 0 127 127 127 127 0 0 0
402.03.04.02 HB
Construction
Scint/WLS Labor
UNIV_TC 0 0 0 0 150 150 150 150 0 0 0
Universitytechnicians6FTE/4years=1.5FTEperyear
WBSDetector Phase Item
CostType
Costsubtype 2016 2017 2018 2019
2020 2021 2022 2023 2024 2025 2026 Notes
6. DescribethehowthecostsharingishandledbetweenNSF,DOE,andM&Ofortechnicalpersonnel?
• HCALisfundedentirelybyDOE.ThefundingfortechnicalpersonnelwillbedonebytheusualSoW procedure.
7. PleasepresentinformationontheradiationdamagestudiesthathavebeendoneontheY11WLSfiber.
Samplenumber Dose Dose time ratioafter/beforewith1hranneallingSample3/fiber17 1.7Mrad 3.5days 0.95Sample4/fiber16 1.7Mrad 3.5Days,N2 0.10Sample5/fiber19 100kRad 3.5days 1.06Sample8/fiber14 300kRad 45days 1.04Sample9/fiber20 300kRad 45days,N2 0.31
Y-11radiationstudiesweredoneinPhoenixandAnnArborCo-60source
Y-11fibersirradiatedwithCo-60source.After/beforemeasurementofcurrentusingPMT,picoampmeter,Co-60source.Testmethodwastoinsertfiberinto2X10SCSN81tile.IrradiationwasperformedineitherinregularairorN2
AdditionalQuestionfromplenaryonsegmentationtomitigateraddamage
Issue• Light yield of inner HB scintillator layers will be reduced by radiation damage.• One way to preserve light yield is to use additional wave length shifting (WLS)
fibers to bring light from each scintillator cell to the corresponding photosensor(i.e greater segmentation).
• This requires available photosensor area and additional space in the fiberrouting.
• Photosensor area is available in the existing design because of the longitudinal segmentation.• In addition, the HB segmentation is not finalized, so this consideration can be
included in the design.
• Additional space in available for fibers. With thinner fibers (less light) we think we can ~ 5fibers
Phase 1 longitudinal segmentation
• In existing detector, light from each cell is carried to photosensors with a single 940um Kuraray Y11 WLS fiber (except for layers 0, which uses 2 fibers).
• The light from each colored group in each η tower (indices 16-28) is readout with a single photosensor (SiPM).
η index
HB SiPM assignment
• PhaseI HE will use SiPMs with 3.3mm diameter for 7-layer depth segments and 2.8mm diameter for all other depth segments (maximum of 4 fibers).
• Assuming HB uses 3.3mm SiPMs everywhere:• Depth1 could use up to 7 fibers for layer0.• Depth2 could use • EITHER: 5 fibers for layer1, and 1 each for layers 2 and 3• OR: 4 fibers for layer1, and 2 for layer2, and 1 fiber for layer3
• Assuming HB uses 2.8mm SiPMs for depth2 and depth1 (same as HE):• Depth1 could use 4 fibers for layer0.• Depth2 could use 2 fibers from layer1, and 1 each for layers 2 and 3.
• Other options for HB:• make Depth2 from only two layers increasing fiber count layers 1 and 2.
Depth4(7 layers)
Depth3(6 layers)
Depth2(3 layers) Depth1
(1 layer)
Layer
Comparisonofmegatile tofingertile(i.e segmentedtile)underraddamage
30
TotalDose:50MradDoserate:1Mrad/hrRecovery:96hr
• Figureofmerit:PMTcurrent• 0.3mCiCs-137source
• Sigmatiles:placedsourceatcornersandatcenteroftile
• Irradiatedtileproducesabout1/100oflightw.r.t.un-irradiatedtile
• About3-4µAvs 30-40nA• Fingertiles:easytoreplaceY11WLSfibers
• Measuredallcombinationsofirradiated/un-irradiatedfingertilesandfibers;resultsinnextslide
31
RadioactiveSourceMeasurementsOverview
Finger-tileMeasurementsPMT current(µA) 0MradY11fiber 47MradY11fiber0MradSCSN-81 tile 2.200(100) 0.580(26.4)47MradSCSN-81 tile 0.355(16.1) 0.092(4.2)
• Uncertainty onmeasurements estimated tobearound10%• Damageonfiberanddamageonfingertile factorize
• 0.264x0.161=0.043vs.0.042• Contribution tototaldamage is (somewhat)similar
• Light-yield reductionduetotile damage:1/6• Light-yield reductionduetofiber damage:¼
32
Numbersingrey:responsenormalizedtoun-irradiatedcase
Thelightyieldfromthedamagedfingertilesis4timesthefullsizetiles(thinnerfiberswillgivelesslightbutwethinkthisfactoris<x2– sonetis2xlight)
IrradiationSetup
33
TheCo-60SourceatUMD
34
MeasurementsSetup
35