ATLAS RRBT 2001 119 Common Projects Status ATLAS

ATLAS RRB-T 2001 -119 Common Projects Status ATLAS RRB, 22 October 2001 Marzio Nessi

List of Common Projects (annex 10 Mo. U) Barrel Toroid Magnet End-cap Toroid Magnet 10/22/2001 Solenoid Common Magnet Infrastructure LAr Barrel Cryostat LAr End-cap Cryostats (2) LAr Cryogenic Plant Parts of Trigger, DAQ and Controls Radiation Shielding Parts of Experimental Infrastructure ATLAS RRB-T 2001 -119 2

B 0, short prototype coil 9 m long B 0 model coil achieved 20 k. A, July 01 10/22/2001 ATLAS RRB-T 2001 -119 3

B 0, short prototype coil ØCommon effort of CEA, INFN-LASA and CERN : ü to provide focus for the BT design --- to exercise all production steps ü to implement in BT production ü to exercise testing and to verify the design construction by CEA and LASA, test by CERN ØConstruction completed : ü delivered to CERN in Sep 00 ü last minute change of stops sliding interface (May 01) ü 1 st test campaign completed --- 2 nd test campaign started on 2 nd Oct 01 ØB 0 test result : ü vacuum vessel is tight (no repairs done) ü cooling down in 2 wks, all test station cryogenics works ü 20. 5 k. A achieved without quench in coil, so the coil design works ü cold leak in thermal shield circuit, stops sliding OK, tie rods OK ü 19 k. A quench in coil-lead connection due to conductor movement ü next campaign is in stability, propagation, losses etc. 10/22/2001 ATLAS RRB-T 2001 -119 4

B 0, short prototype coil ØExamples of impact on BT construction : ü the early B 0 design brought collaborative spirit and focus to the magnet lab ü conductor: early qualification and testing ü improved conductor cleaning ü improvement to coil winding tolerances ü drastic improvement to impregnation (4 month extra work!) ü change of coil casing welding technique: EB->MIG ü cold mass integration: bladder technology and tooling ü cooling lines: less welds, line testing of whole circuits ü thermal shield: less welds, Al alloy, gap between panels ü tie rods: optimization: reshaping, testing ü stops: redesign, new sliding surfaces ü superinsulation: blanket layout and assembly ü instrumentation: change of sensors, thermalization etc. ü vacuum vessel assembly, use of frame ü cryostat integration: increase of clearance, procedures, many details of conductor bending, avoid turnovers, cooling pipe testing and gluing ü cryoring: conductor movements 10/22/2001 ATLAS RRB-T 2001 -119 5

Barrel Toroid Magnet Engineering & Monitoring @ CEA, INFN-LASA, CERN ØBT conductor (32 units x 1730 m) : ü 23 units done, on time for coil winding, not critical. ØCoil Casings (8 units): üwelding on CC-1 completed, machining started on 8 Oct 01 üfirst casing delivery by 18 Dec 01, last one ØDouble Pancakes (16 units) in Apr 03 ü 6 DPCs made, 5 accepted, #9 is being wound ü 5 m float w. r. t. coil casing, fine ! ØCold mass integration : ütooling under construction, 4 Double Pancakes delivered To CERN ü 1 st integration in Jan 02, 1 st delivery to CERN in Mar 02 10/22/2001 ATLAS RRB-T 2001 -119 6

Barrel Toroid Magnet Barrel cryostat during construction First Coil casing ready for machining 10/22/2001 ATLAS RRB-T 2001 -119 7

Barrel Toroid Magnet (2) ØVacuum vessels (8 units) : ØRadiation shield (8 SETS) : üdelivery 1 st vessel by FCM in Dec 01, üContract ok! 1 st delivery required by all steel procured. Not time critical ! April/02. Delivery is on the critical path! ØSuperinsulation (5000 m 2) : ØTi-Tie rods (64 units) : ü 1 st batch delivery in Mar 02 ü 64 rods forget, 6 machined. All Ti rods will be proof loaded at Kurchatov at 77 K ü 8 piece delivery by Mar 02 Ø 256 Stops + 128 shield sup. : Coils ütender completed, company selected contract under preparation, 1 st bat by Apr 02 ØIntegration inside the cryostat: üJNIR team at CERN, tooling under construction, delivery starts in Nov 01 ü Integration work starts in April 02 ØWarm support structure: üdesign review passed, TIS approval awaited in Oct 01 üforging work shall starts in Dec 01, large scale forging by Samara, all machining by JNIR 10/22/2001 ATLAS RRB-T 2001 -119 For installation in the ATLAS Pit 8

End-Cap Toroid Magnet ØECT conductor (32 units x 820 m) : ü 16 units done, not critical. Engineering & Monitoring @ RAL, Nikhef ØVacuum vessels (2 units) : ü 1 st vessel ready, 2 nd vessel ready by March 02 ü 1 st vessel being transported to CERN right now. arrives on 29 Oct ØCold masses (2 units) ü full size dummy coil winding completed in Oct 00 at HMA ØSupports &Tie rods (64 units) : üproduction has started, 1 st batch delivery üserious problem with schedule and cost in Mar 02 increases caused by company taken over by FKI. üdelivery will be late in 03 and 04, not yet a problem for installation as it is scheduled for May 05. ØRadiation shields (8 SETS) : üProduction has started, delivery of all shields together by May 02 ØSuperinsulation : ØIntegration inside the cryostat: üproduction starts in Sept 01, delivery in May-Aug 02 üby JNIR team at CERN in Hall 191, tooling under construction, work at CERN starts in Apr 02 üintegration management by RAL 10/22/2001 ATLAS RRB-T 2001 -119 For installation in the ATLAS Pit 9

End-Cap Toroid Magnet End-Cap cryostat during construction 10/22/2001 ATLAS RRB-T 2001 -119 10

Magnet Infrastructure ØHe refrigerator & distribution: ü re-use of 6 k. W CERN machine, agreed contract for 2 nd refrigerator system awarded. ØProximity cryogenics : ü design completed by RAL, tender in Feb 02 ØVacuum System : ü predesign completed by RAL, implementation studied ØMagnet Power System : ü final design and production of common system by LASA ØMagnet Safety and Control Systems : ü CERN is defining a common system with standardized hardware, will be built and installed by CERN ü tender completed, company selected 10/22/2001 ATLAS RRB-T 2001 -119 11

Solenoid ØSuccessful excitation test, Dec 00 {Toshiba} : ü Cooling down, excitation up to 8. 0 (nominal field) and 8. 4 k. A (+10%) ü 2 training quenches at both end flanges (classical) ü Results accepted by ATLAS, test completed ØDelivered to CERN on 3 rd Set , 2001 : ü Acceptance test done @CERN by KEK and Toshiba ü Solenoid provisional accepted 10/22/2001 ATLAS RRB-T 2001 -119 12

LAr Barrel Cryostat ØThe Barrel cryostat arrived at CERN : ü Cryostat was leak-tested at CERN ü A leak has been discovered on the warm bulkhead "A", in the region of the "bulge“ ü KHI, BNL and ATLAS agreed on the provisional acceptance with reserve on the flange A, where the source of the problem was identified ü KHI and BNL will take actions for the repair to be done by the end of February üThe cover can be repaired in parallel to the integration work without delay on the agreed integration schedule ØIntegration work has started : ü Cryostat fully opened Sept. 28 th ü First Signal Feedthrough in place Oct. 8 th ü Now 8 Feedthroughs are installed, welded and leak checked ü ~50% of all Feedthroughs are constructed 10/22/2001 ATLAS RRB-T 2001 -119 13

LAr Barrel Cryostat @ CERN 10/22/2001 Feedthrough installation ATLAS RRB-T 2001 -119 14

LAr End-Cap Cryostats (2) Ø ~ 30% of Feedthroughs constructed ØAssembly of Cryostat C has been completed : üAn Hydraulic test was performed on Sept. 18 th and failed because of an excessive deformation on the large Omega seals. üCryostat was leak-tested üA set of modifications have been proposed and successfully implemented üNew milestones: Pressure test: Oct. 22 nd 2001 Cold test(finished): Nov. 8 th 2001 Delivery at CERN: Dec. 3 rd 2001 ØCryostat A : ü Delivery at CERN expected for April 3 rd, 2002 10/22/2001 ATLAS RRB-T 2001 -119 15

LAr End-Cap Cryostat End Cap cryostat C assembled at Simic 10/22/2001 ATLAS RRB-T 2001 -119 16

LAr Cryogenics Plant ØExternal cryogenics : üFirst liquid nitrogen dewar will be delivered end of October üThe 2 nd dewar and the 2 liquid argon storage tanks will be delivered June 2002 üStorage tanks in the pit in July 2003 üRefrigerator, ordered by BNL. The commissioning is planned in January 2004 üCryogenic lines, tendering procedure in progress ØProximity cryogenics : üExpansion vessels and valve boxes contracts signed. Delivery foreseen middle of 2002. Needed for the cold tests in 2003. üWork on flexible Ar lines and transport system under progress, prototyping done. üVacuum material delivery has started, diffusion pump already used for the barrel acceptance test. ØProcess control: üAgreement concerning the hardware, ready for signature. Development station already delivered. üNeed to finalize choices for the software, within UNICOS; agreement for this part should be ready before end 2001. 10/22/2001 ATLAS RRB-T 2001 -119 17

Radiation Shielding ØJD shieding : ü Redesign done (mech. , cost) ü Final design review Nov. 2001 ü Start procurement phase spring 2002 ØJF shieding : ü Redesign under way (cost, noise, mech. ) ü Final design review Feb. 2002 ü Start procurement phase spring 2002 ØJT shieding : ü New concept approved by EB ü Redesign under way (cost, noise, mech. ) ü Final design review Apr. 2002 ü Start procurement phase summer 2002 10/22/2001 ATLAS RRB-T 2001 -119 18

Parts of Experimental Infrastructure ØFeet & Rails : ü PPR review done ü Firm selected and qualified ü Contract circulating before signature ü Procurement of material by Feb 2002 ØExternal rails (trucks): ü Design review done ü Firm selected, possible IK from Poland ü PPR in Feb 2002 ØMajor infrastructure procurements: ü Cranes (surface, underground) ü Area Cooling&Ventilation (CERN) ü Metallic structures 10/22/2001 ATLAS RRB-T 2001 -119 : contract F-420 done, on schedule : contract F-405 done, on schedule : contract done, on schedule 19

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