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ATLAS closing scenario

ADO-PO section meeting March 12th, 2009. ATLAS closing scenario. Where we are What is still be done before closing (ADO-PO support) Closing scenario / Procedure / Schedule. Prepared by Michel RAYMOND. Side C. Side A. Side C. Side A. Where we are.

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ATLAS closing scenario

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  1. ADO-PO section meeting March 12th, 2009 ATLAS closing scenario • Where we are • What is still be done before closing (ADO-PO support) • Closing scenario / Procedure / Schedule Prepared by Michel RAYMOND

  2. Side C Side A Side C Side A Where we are Atlas is in standard opening configuration Nominal gaps are granted except at a very few locations (Tile Extended Barrel) Access exist and are evolving depending on systems requests Most of them complies with expectations (2 sectors not reachable on BEE C side) No particular complain caused by the new layout of the Round scaffolding Current situation should be the baseline for future, including necessary improvements

  3. What is to be done before closing Just to remind where the ADO-PO operation team is involved Only the main tasks that have to be done before the closing are mentioned • EEL muon chambers installation in sector 5 • Ring segments modification on JD • Shielding of LVPS on End Cap calorimeters • BOL6A11 and BOL6C15 repairs • Magnet preparation Done On going Done Done On going On going To check all functionalities of the movement system • A few improvements are on going (Traction control, Air distribution) • Spare components have been ordered but will be partially here only, because of very long delivery time 3

  4. Closing scenario : overview It will be the reverse scenario compare to the opening Closing of side A In parallel, fiber replacement on Big Wheels MDT chambers side A + closing of C side Octagonal shielding will be installed for the 1st time 5 weeks Dismounting of platform Removing of BT Vacuum pump Chamber installation BT vacuum pump back Modification (?) and platforms back 5 weeks

  5. Team activity All Barrel scaffoldings Supervision/operations M. Raymond P. Petit Follow up – ALARA O.Beltramello F. Pedrosa R. Vuillermet L. Rose-Dulcina G.Akhperjanian I. Krasin S.Studenov S.Yukhimchuk Movement system M. Raymond D. Bertet F. Rosset A. Popov General support (team) • Barrel chambers + EE • G. Spigo • C. Leboube • V. Durastanti • A. Popov • A.Yandyan BW movement + maintenance R. Vuillermet W. Andreazza C. Leboube V. Durastanti A. Yandyan Magnets P. Benoit M. Jeckel This is the main idea : detail will be decided according real time activity

  6. Side C Side A Side C Side A Closing Side A (1) Scaffoldings removal (JD, EB, then Barrel) Hydraulics connections EBA movement EIL4A11 replacement Air pads + hydraulics JD-A movement Fixed point on VA - Removing of temporary support of VT Installation of JD locking devices 30/03/2009 07/04/2009 EBA closed 09/04/2009 JD-A closed 16/04/2009

  7. Side C Side A Side C Side A Closing Side A (2) ECT X-brackets removing Hydraulics connections ECT-A movement Support of VT-A AFT locking Hydraulics connection and truck movement Light truck to surface A-frame installation 15/04/2009 17/04/2009 ECT-A closed 21/04/2009 Truck to surface 22/04/2009

  8. Side C Side A Side C Side A Closing Side A (3) Lowering of Compressed truck Lowering of JF table Hydraulics connection Lowering of JFC1 JFC1 positioning Beam pipe + Lucid Truck movement + lifting JFC2 installation + survey 23/04/2009 27/04/2009 JFC1 installed 06/05/2009 JFC2 installed 07/05/2009

  9. Fiber replacement – SIDE A Installation of JFC3 is delayed to give access to LUCID • BW-A opening and decoupling – planned 4 days • Tilt + 3 meters movement • Columns installation • MDT–TGC2 disconnection • Load transfer to static columns • Movement 1.5 meter toward IP 07/05/2009 • Optical fibers replacement maintenance operations • Using 1 lifting platform + 1 basket lifted by the crane 15/05/2009 Planned 6 days • IP face opening • Movement of chariot • Load transfer • Connection TGC2-MDT • Movement to IP • Disconnection MDT-TGC1 • Load transfer • Movement 1.5 meter 26/05/2009 Planned 3 days 29/05/2009 • Optical fibers replacement + maintenance operations • Using 1 lifting platform + 1 basket lifted by the crane Planned 6 days • BW-A at closed position • Closing the wheel • Load transfer • Connection TGC1-MDT • Tilt 09/06/2009 Planned 1.5 day 10/06/2009

  10. Side C Side A Closing Side C Scaffoldings removal (JD, EB, then Barrel) Hydraulics connections EBC movement Air pads + hydraulics JD-C movement Fixed point on VA - Removing of temporary support of VT Installation of JD locking devices 06/05/2009 19/05/2009 EBC closed 22/05/2005 JD-C closed 25/05/2009 ECT X-brackets removing Hydraulics connections ECT-C movement Support of VT-C AFT locking Hydraulics connection and truck movement Light truck to surface A-frame installation 28/05/2009 ECT-C closed 02/06/2009 Truck to surface 04/06/2009 Lowering of Compressed truck Lowering of JF table Hydraulics connection Lowering of JFC1 JFC1 positioning Beam pipe + Lucid Truck movement + lifting JFC2 installation + survey JFC1 installed 08/06/2009 JFC2 installed 11/06/2009 11/06/2009

  11. Last activities 11/06/2009 Magnetic test 24/06/2009 EE side A Activity in parallel on both sides need a very sharp organization EE side C 15/07/2009 22/07/2009 Octagonal shielding side A Work on VJ beam pipe & LUCID Install JFC3 + plug Rails set up Lower compressed truck + JF table Truck positioning - hydraulic connection Lowering of JFS3 bottom part JFS3 bottom part positioning Air pads removal JFS3 top part installation - TAS survey Octagonal shielding side C 27/07/2009 06/08/2009 Removing of all equipment and material from UX15 Shafts closing

  12. Improvement foreseen on closing/opening movement • Improvements about the procedure • close collaboration between Operation team and Safety team • Follow up of the procedure and task durations • Analysis of the procedure + Go to more details when necessary • Add to the procedure the clear information on which material is removed and when • Addition in the procedure of RPE intervention. • Technical improvements on movement system • Air flow panels have been lowered from top of the truck to the floor of the trench • To monitor air will need one tech. instead of two • Tech. will stand much further from activated area • Many components duplicated to save not only time but also handling and access close to activated area • Connection between Bcam and movement HMI is being developed • will reduce the need of survey and make us more confident during movement

  13. Plans for detectors positioning Overall policy = do the same than during 1st closing in 2008 End Cap calorimeters Method and tooling is kept unchanged Checking of the distances between Tile fingers and ITC Adjustment of stoppers and electrical switches To perform the movement until stoppers are touching What is our goal : nominal position or “previous run” position ? To be confirmed Tilt back the JD to the nominal angle Adjust the new ring segments accordingly JD + Small wheels Goal : be as close as possible from nominal position End Cap Toroid So far, no change in requirements  no change in the procedure Goal : be as close as possible from “previous run” position ? To be confirmed Big wheels Measurement done on C side after fibers replacement shows no relative movement between wheels. Last positioning will be reproduced Goal : place the various parts as they were, Final survey needed (for magnetic reason) Shielding

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