1. February 26 th 2013Muon LS1 operation meeting1 Muon LS1 Status Outline Recap of last week P1 weekly schedule Muon related activities Open issues and discussions Zhen Yan February 26 th 2012

2. February 26 th 2013Muon LS1 operation meeting2 Recap of last week Feb 19 –MDT SmallWheelA/C (LV and grounding) + BEEA/C (all services) had been disconnected by Tiesheng, Jiaming and Haolu. Feb 20 –Big wheel C moved to opening position. –Services of MDT BIL[456][AC]01 and BIL6[AC]13 had been disconnected by Joerg to provide access to inner detector parts –One hook of the 140T crane damaged, the opening process on A side delay about 4 days Feb 21 –MDT gas leak test done ( see detail in Joerg’s input ) –One BCAM damaged ( barrel side A sector 9-11 ) Feb 22 –Anatoli started to work on EO gas leak repairing. Both HV and LV on A and C side had been turned off and physically disabled. Feb 25 –ECT moved to opening position –Removed pc-csc-det-02 from rack Y2816A1 by Kalliopi

3. February 26 th 2013Muon LS1 operation meeting3

4. February 26 th 2013Muon LS1 operation meeting4 Muon related activities this week Tuesday 26/02 at 8:00 –Big Wheel A side movement ( TGC + MDT supporting team, impact 24698 had been approved ) Thursday Feb. 28th at 6:00 am –Lowering of MDT for sector 13 C side (BOE) : (early morning time) 01/03 or 04/03 –SWC movement ( TGC + MDT supporting team ) –EEL sector 15A installation ( MDT service ) 05/03 and 06/03 –SW-C services disconnection ( TGC + MDT + CSC experts for services disconnecting ) Close the gas valve on chamber side Disconnect HV+Fiber+Alignment at patch panel

5. February 26 th 2013Muon LS1 operation meeting5 Other issues and discussions Keep 2 desktop machines running in ACR for next few weeks –MDT DCS + TGC HV recovery work Impact for accessing to the USA15 area –Received all the feedbacks. Thanks a lot. –Will submit today Re-submit all PPSPS documents –Any progress? New meeting time had been decided –Every Tuesday 9:00-10:00 Keep to run this meeting weekly until the opening process finish –Move to bi-weekly afterward