response to reviewer questions - indico.fnal.gov

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)


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


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


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


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.

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)


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


402.03.04.02 HB R&D

Scint/WLS Travel 10 10 0 0 0 0 0 0 0 0 0


402.03.04.02 HB OPC

Scint/WLS Labor

UNIV_TC 0 0 20 20 0 0 0 0 0 0 0


402.03.04.02 HB OPC

Scint/WLS M&S 0 0 30 30 0 0 0 0 0 0 0


402.03.04.02 HB OPC

Scint/WLS Travel 0 0 10 10 0 0 0 0 0 0 0


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

[email protected]

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


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

response to reviewer questions - indico.fnal.gov

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