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Status report on ICARUS T600 (CNGS-2)

Status report on ICARUS T600 (CNGS-2). D. Gibin (ICARUS Collaboration) SPSC, 15-07-2008. The ICARUS collaboration. A. Ankowski 1 , M. Antonello 2 , P. Aprili 3 , F. Arneodo 3 , B. Baibussinov 4 , M. Baldo Ceolin 4 , G. Battistoni 5 ,

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Status report on ICARUS T600 (CNGS-2)

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  1. Status report on ICARUS T600 (CNGS-2) D. Gibin (ICARUS Collaboration) SPSC, 15-07-2008

  2. The ICARUS collaboration A. Ankowski1, M. Antonello2, P. Aprili3, F. Arneodo3, B. Baibussinov4, M. Baldo Ceolin4, G. Battistoni5, P. Benetti6, A. Borio6, E. Calligarich6, M. Cambiaghi6, F. Carbonara7, F. Cavanna2, S. Centro4, A. Cesana5, K. Cieslik8, D. B. Cline17, A. G. Cocco7, A. Dabrowska8, R.Dolfini6, C. Farnese4, A. Fava4, A. Ferrari5, G. Fiorillo7, S. Galli2, D. Gibin4, A. Gigli Berzolari6,A.Giuliano9,K.Graczyk1,S. Gninenko10, A. Guglielmi4,C. Juszczak1, J. Holeczek11, D. Kielczewska12, M. Kirsanov10, J. Kisiel11, T. Kozlowski13, N. Krasnikov10,M. Lantz5, G. Mannocchi9, M. Markiewicz8, Ch. Matthey17, V. Matveev10, F. Mauri6, A. Menegolli6, G. Meng4,C. Montanari6, S. Muraro5, J. Nowak1, S. Otwinowski17, O. Palamara3, L. Periale9, G. PianoMortari2, A. Piazzoli6, P. Picchi9, F. Pietropaolo4, W. Polchlopek14, M. Posiadala12, M. Prata6, P. Przewlocki13, A. Rappoldi6,.G. L. Raselli6, E. Rondio13, M. Rossella6, C. Rubbia3, P. Sala5, L. Satta9, D. Scannicchio6, Y. Seo17, E. Segreto3,F. Sergiampietri15, J. Sobczyk1, D. Stefan8, J, Stepaniak13, R. Sulej16, M. Szarska8, M. Terrani5, G. Trinchero9, F. Varanini4, S. Ventura4, C. Vignoli6, T. Wachala8, A. Zalewska8, K. Zaremba16 B. Lisowski17, H. Wang17, X. Yang17 1 Wroclaw University of Technology, Wroclaw, Poland 2 Dipartimento di Fisica e INFN, Università di L’Aquila, Via Vetoio, I-67100 3 Laboratori Nazionali del Gran Sasso dell’INFN, Assergi (AQ), Italy 4 Dipartimento di Fisica e INFN, Università di Padova, Via Marzolo 8, I-35131 5 Dipartimento di Fisica e INFN, Università di Milano, Via Caloria 2, I-20123 6 Dipartimento di Fisica Nucleare, Teorica e INFN, Università di Pavia, Via Bassi 6, I-27100 7 Dipartimento di Scienza Fisiche, INFN e Università Federico II, Napoli, Italy 8 H. Niewodniczanski Institute of Nuclear Physics, Krakow, Poland 9Laboratori Nazionali di Frascati (INFN), Via Fermi 40, I-00044 10 INR RAS, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia 11 University of Silesia, 12 Bankowa st., 40-007 Katowice, Poland 12 Warsaw Univeristy, Krakowskie Przedmiescie 26/28, 00-927 Warszawa, Poland 13 A. Soltan Institute for Nuclear Studies, 05-400 Swierk/Otwock, Poland 14 AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland 15 Dipartimento di Fisica, Università di Pisa, Largo Bruno Pontecorvo 3, I-56127 16 Univeristy of Technology, Pl. Politechniki 1, 00-661 Warsaw, Polanda 17 Department of Physics and Astronomy, University of California, Los Angeles, USA Daniele Gibin

  3. ICARUS T600 June 19th 2007 July 2008 Daniele Gibin

  4. T600 Detector completed end of July end of July end of July start Aug. completed ongoing August depending on deliveries (Air Liquide, Stirling) originally foreseen by end 2007 under the responsibility of the ICARUS collaboration • Detector inspection and cabling of signal feed-throughs • Sensor/PM/monitor cabling and detector closure • Cabling, Readout electronics, DAQ & electronic test • Vacuum system mounting • Pressure tests, leak tests, vacuum pumping • Network infrastructures • Tests of the connections control room - detector, control room- external labs, … • Evacuate the cryostats • Cooling down • Filling with LN2 and LAr } Daniele Gibin

  5. the T600 top (1st phase) • Straight chimneys mounting • Extraction of cables/fibers • Detector inspections (man-holes) • HV feed-throughs mounting • Diffusion pipes for LAr (new) July-October 2007

  6. inner detectors • Wire chamber mechanics • HV system • PM light detection system • Slow control system • Purity monitors 2007 July-October Daniele Gibin

  7. Wire chambers mechanics • Movement lock released • Visual check of wire integrity, position, spacers • No wire broken • Check of wire tension on selected samples • Measurements compatible with nominal values • Cleaning • Wire chamber mechanics is in perfect conditions • No effects due to transportation and movements • The 2 T300 modules are presenting equal characteristics • No effects due to LAr filling in the Pavia run in 2001 Daniele Gibin

  8. HV system • Cathode and racetrack holding mechanics • Field shape resistors re-mounting and check • Electrical continuity check • HV feed-through mounting • HV system is in perfect conditions • No effects due to transportation Daniele Gibin

  9. PM light detection system • Visual inspection • Survey of the PM integrity • None broken, electrical connection • Check of the TPB coatings on the PM surfaces by means of an UV lamp • No visible aging effect, the coating is uniform • No difference between the 2 T300 → No problems due to LAr immersion • No waste TPB material inside the cryostats • Stability & adherence of the shifter coating • the PM system was found in good conditions • No effects due to transportation, aging (7 years), cooling and LAr immersion Daniele Gibin

  10. Slow control system • Visual inspection of the installed instrumentation • The slow control system was found in good conditions • Installation of new LAr point-like level meters (resistive): • 1 array composed by 5 sensors per each of the 8 corners of the 2 T300 to measure the max LAr level with redundancy (used during LAr filling and at regime) Daniele Gibin

  11. Purity monitors • Visual inspection of the 12 monitors • Cables and fibers extraction from chimneys • Check of the resistor chains • The purity monitor check was ok • 4 end-caps of Faraday cages replaced and 4 photo-cathodes replaced with new GaAs samples • 1 monitor of Module n.1 has been shortened (20 cm → 4 cm drift) to provide sensitivity for low lifetimes (5-30 ms.) Daniele Gibin

  12. Activities on the T600 top (2nd phase) Feed-through internal cabling “Cross” chimneys mounting 2008 January-February Sensor mapping Daniele Gibin Signal feed-throughs in position

  13. Electronic rack mounting 2008 March Daniele Gibin

  14. T600 detector: present status • All the internal auxiliary instrumentation precisely mapped in the 80 chimneys, the feed-through mounting is ongoing. • 88 front-end electronic racks (fully instrumented and off-line tested) in their final position on the T600 top. • 6 trigger /DAQ control racks + 2 cabinets for detector power supply placed on the top of the service structure. • All the “cross” chimneys and signal feed-throughs are mounted. • The overall rack connection is ongoing. • Overall electronic chain noise test ongoing on the connected racks. July 2008 Daniele Gibin

  15. Front end data compression New digital card firmware storing the difference between consecutive samples packaged into 4 bits (±7 ADC# range with overflow handling) → lossless factor 4 gain in size/throughput Tested with a LAr TPC prototype Daniele Gibin

  16. Electronic tests • All crates were previously electrically tested outside • New firmware installed to allow data compression • Noise and pulse response measurement are ongoing for all the electronic channels. Agreement with design specifications. 96 channels rms ≈ 1ADC# =1000 e- 400 ms 56 ms 400 ms Daniele Gibin

  17. Cryogenics • Reliquefaction system (Stirling) • Installation ofskids, tanks, piping • Water cooling, compressed air, … • Installation of the control instrumentation, electrical cabinets, cabling • Commissioning • LN2 and LAr Cryogenics(Air Liquide) • Installation of the cold shielding and top floor • Installation of the Ar circuit • Installation of the external N2 circuit • Installation of safety systems and devices • Installation ofthe control instrumentation, electrical cabinets, cabling • Installation of the cryogenic liquid unloading station • Dry Tests Completed Completed Almost completed end in Sept 08 Completed July 08 Completed Completed July 08 July 08 End July 08 Daniele Gibin

  18. Insulation pool closure Frontal cooling screens Invar containment plate External structure Frontal insulation wall 2007 September Daniele Gibin

  19. Top screen and insulation assembly Top cooling screens Superinsulaion layers 2007 July-October Top insulation mounting Top insulation external welding Daniele Gibin

  20. Top structure completion 2008 January Insulation reinforcing structure completion and T600 top floor mounting for racks Reinforced bellow Daniele Gibin

  21. Service structure completion Structure top 2008 begin of February Daniele Gibin

  22. Scheme of the overall cryogenic plant To LNGS ventilation 50 kW heater GN2 AIR LIQUIDE STIRLING LN2 storage tank Circulators N2 phase separator (Testing vessel with heater) GAr & LAr recirculation & purification 4 kW unit cryogenerators T600 cooling GN2 LN2 Transfer pumps Intermediate LN2 vessels Daniele Gibin LN2

  23. STIRLING construction LAr and LN2 storages Pipes 2007 November Skid frames Cryocoolers (10 units) Daniele Gibin

  24. Cryogenic liquid storage 2008 February LAr and LN2 30 m3 storages in the final position Daniele Gibin

  25. Compressor skids 2008 February Daniele Gibin Skids in position

  26. STIRLING circuit mounting Phase separator Skids, pumps and lines Valves LAr cryocooler April 2008 Lines Daniele Gibin

  27. Air Liquide circuit mounting LAr purification systems Passive heaters LAr lines 2008 GAr purification systems July LN2 pumps LN2 circuits Daniele Gibin

  28. T600 activities: general infrastructures • under the responsibility of LNGS • Electricity supply • Ventilation in the ICARUS area • Safety & Control Supervision systems • ICARUS Control room, UPS ethernet • Separation wall • Completion of the Service Structure • T600 top cooling system • Emergency power supply • New “Double” Ventilation System • Water Cooling System End of July 08 End of July 08 Sept. 08 Completed Ongoing Completed Ongoing July 08 September 08 completed Daniele Gibin

  29. T600 overall plant: present status LAr LN2 Dewars(30 m3) Read out electronic Ar purification and LN2 recondensation systems T600 Daniele Gibin

  30. Summarizing: next steps all depending from Industrial support. Collaboration is ready • ICARUS detector (external connections) completion: August 08 • Pressure tests, leak tests, vacuum pumping August 08 • Tests of read out and electronics August 08 • AIR LIQUIDE overall plant completion: July 08 • LNGS infrastructures completion & commissioning: • Mains (necessary for STIRLING commissioning) End of July • New ventilation (first step) Sept. 2008 • Safety & Control Supervision systems Sept. 2008 • STIRLING Commissioning (5 weeks): end Sept. Strongly dependent on the power supply availability • Delivery of LAr from Air Liquide 13 Oct. • T600 start-up, eventually with Cosmic Rays end Oct ? Daniele Gibin

  31. Conclusions • Impressive progress in the T600 installation have been achieved in the last months. The bare detector and the data acquisition are essentially ready now. • The T600 plant in the underground laboratory with all required infrastructures has been more complicated and slower than expected, but it is also nearing its completion. • Some of the T600 start-up procedures, logistics and authorizations have still to be completed. • The actual time-schedule of the T600 operation now is mainly depending on the next progress in the LNGS infrastructures, industrial supplies, contracts, delivery of LAr, logistics and authorizations. • The filling of the nearly 700 ton of liquid Argon is now scheduled to start by the middle of October and it should last 2-3 weeks. • The detector is expected to operate both with cosmic neutrinos and accelerator beam. Probably the scheduled 2008 beam run may be too late, but important cosmic data will be recorded before the end of 2008. Daniele Gibin

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