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Semi-Digital Hadronic CALorimeter Prototype planning

CIEMAT, Gent, IPNL, LAL, LAPP, LLN, LLR, LPC, Protvino, Tsinghua, Tunis

I.Laktineh

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Organization Planning Budget Manpower Expected tests

Global Review

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detector

Coordination

Electronics

Acquisition

Mecanics

Simulation

IPNL

IPNLLLRTunis

LLRLAPPIPNLCIEMAT

IPNL,LLR

LALIPNLLLRLAPP

IPNLGent,UCLProtvinoTsinghua

UCLIPNL

Validation test

Organization11 groups from 6 countries all are CALICE members

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Coordination, detector, electronics board, cassette,ASIC test, DAQ SW, simulationASICs design and productionDIF design, production and testDAQ HW and SW, simulationMechanical structure, design, production and

controlSimulation, detector and validation testDetectorSimulationDetectorDetector

Organization

IPNL

LALLAPPLLRCIEMATLLNGentTunisProtvinoTsinghua

In addition to CALICE meeting we organize specific SDHCAL meeting (about 1 every month) to discuss R&D and analyses

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PlanningOur aim is to achieve the SDHCAL prototype before March 2011so we can be able to take beam in 2011 and validate the concept in time for the DBD in 2012. In addition our ANR contract stipulates to have our electronics ready by end of 2010.

The construction will take place in three sites essentially

1-IPNL( Lyon) : Detector construction, electronics and cassette assembling 2-CIEMAT (Madrid) : Mechanical structure

3-UCL(Louvan-La-Neuve) : validation test

4- Interface boards were/will be tested in LAPP/LLR

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R&D was funded by different national funding agenciesHowever the most important contribution was that of IN2P3.

The prototype is funded essentially by an ANR (electronics),IN2P3 (detectors), and CIEMAT (mechanics).Validation test facility is funded by Belgian funding agencies

Budget

• Detector• Cassette• Mechanical Structure• Electronics• Services

Prototype cost

Part of the components are alreadyacquired, others are being ordered

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Glass plates (2) 100 €

Painting + silk screen printing

150 €

Spacers : ceramics balls (81)

30 €

Frame (plastic)+ glue + connectors

50 €

Mylar(2) 30 €

Total 360 €

Detector : 1 m2 GRPC detector

For 50 GRPC detectors the detectors cost is 18 k €

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Stainless Steel plates 316L (2mm+3mm)

≈ 350 €

Machining costs : Holes (M1,M2)

≈ 400 €

Frame: Alum. bars ≈ 30 €

Fixation pieces ≈ 50

Total ≈ 780 €

Cassette : 1 m2 GRPC detector

For 50 cassettes the cost is 39 k €

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Stainless Steel plates 3O4L20 mm

≈1000 €

Machining costs : Flatness(<50µ),Thickness(<250 µ)

≈ 2000 €

Frame : Spacers ≈ 100

Total ≈ 3100 €

Mechanical Structure

For 40 cassettes the cost is 124 k €

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ASICs (9000) ≈ 140000 €

ASU (300) ≈ 60000 €

Connectors: ASU-ASU (300)ASU-DIF (150)

≈ 10000 € ≈ 20000 €

Cabling ≈ 30000 €

DIFs (150)DCC (14)

≈ 25000 € ≈ 15000 €

Total ≈ 300000 €

Electronics

For 50 detectors the cost is 300 k €

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Gas distribution system 43000 €

High Voltage Power supplies (40)

≈ 13600 €

Low Voltage power supplies

available

Total ≈ 56600 €

Services

For 40 cassettes the cost is 56.6 k €

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Total Costcosts excluding manpower and validation test

Detectors 18 k€

Cassettes 39 k€

Mech. Structure 124 k€

Electronics 300 k€

Services 57 k€

Total 538 k€

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Manpower : Physicists IPNL(6 physicists, 1 PhD)

LLR (2 physicists, 1 PhD)

CIEMAT( 2 physicists, 1 PhD)

LLN (1 Physicist, 1 PhD)

Gent (2 physicists)

Tunis( 1 physicist)

Tsinghua(2 physicists, 1 PhD)

LPC (2 physicists)

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Manpower : Technical staffDetector : 1 Eng. 2 Tech Glass preparation, spacers and frame gluing gas outlets and HV connectors installation IPNL,Gent,UCL,Tsinghua Cassette : 1 Eng. 2 Tech Frame and electronic board fixation, detector installation and quality control IPNL,LLRASIC : 1 Eng., 1 Tech ASICs testing and calibration IPNLASU : 2 Eng. 3 Tech Controlling ASUs after cabling, connecting and soldering ASU and controlling the 1m2 electronic board IPNL DIF : 1 Tech Controlling the DIFs LAPPDAQ : 4 Eng HW and SW control, DAQ validation, database and event building LLR,IPNL Mech. Str.: 1 Eng. 2 Tech controlling the plate quality and mounting CIEMATValidation test : 2 Tech Mounting and running the test bench UCL

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Strategy : Test-Beam

In 2012 the ILC community is to submit a DBD (Detector Base Design) document to the ICFA. This implies that each of the ILD and SiD concepts have already selected their sub-detectors baseline. We intend to demonstrate by 2011 that the SDHCAL solution we proposed in the 2009 LOI is qualified to be selected as a baseline for ILD.

The technological prototype is expected to be completed by April 2011. Two months of commissioning are requested before to expose it to a particles beams.

By June-July 2011 we hope to be ready to receive beam.For this we intend to submit a request to CERN authorities for two months of beam at SPS.

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Our request will be a part of a global CALICE request.However, in order to fulfill our program we need a special movable and rotating stage capable of supporting up to 10 tons.We need also to use a TB line which provides low energy pions.

These two conditions limit our choice.

Contact with ATLAS Test Beam coordinator was established to see if we can use the ATLAS stage on the H8 line. This line is one of two lines able to provide hadron beam as low in energy as 2 GeV. It is very important to be ready in 2011 and to go to TB since no beam is available at CERN n 2012

Strategy : Test-Beam

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First period ( between June and July):

Three kinds of particles beams will be requested

1- Muons: To control the detectors and estimate their efficiency in situ. To align precisely the detectors inside the HCAL2- pions: To study energy resolution in the 2-100 GeV range.3- Electrons : To study the HCAL response to a pure electromagnetic particles

In addition to energy scan, there will be angle scan as well as a threshold scan. The latter allows to select the best values for a better energy resolution

Test-Beam program

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Second period (between October and November) :

The aim of this test is to have a deep understanding of the hadronic shower behavior once the detector response is well understood. We would like to have by that time 48 units (as for the modules proposed for ILD (56 λI)) .We intend also to have a combined test with the CALICE ECAL detector which represents an additional λI

In addition to studying the hadronic shower behavior we would like to study separation of two hadronic shower by increasing the beam intensity. The GRPC rate limitation is less an issue when particles start their interaction in the ECAL

Test-Beam program

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Conclusion

During 4 years we followed an active R&D in the field ofgaseous-detector-based calorimetry. We showed that we are capable of building large GRPCs fulfilling the request of ILC future experiments of efficiency andhomogeneity. We developed a new semi-digital readout and tested it extensively. A 1 cm2 lateral resolution is obtained. We conceived a cassette that allows to hold the electronics on the detector tightly. The cassette is designed tobe part of the absorber. This allows to have a better transverse SamplingWe carried many TB campaigns to validate not only the different Elements of our SDHCAL

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Conclusion

We succeeded to attract new groups to join our effortsand we have the needed manpower to realize the prototype andexploit it. Although we believe we have done what is necessary to succeedour project, we will still appreciate highly that experienced peoplecould provide us with their invaluable recommendations to help usin our project.

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