25 January 2007VELO sub-projectsEddy Jans 0 VELO-meeting January 25, 2007 Sub-projects: SX & SX connectorize cooling cables alignment procedure motion test bake out procedure turn over project  P-project VELO vacuum commissioning LHCb installation planning summary + timelines

25 January 2007VELO sub-projectsEddy Jans 1 clean up SX &4 Spaces and are future storage, repair and working places for the whole VELO + PU communities. With other people and parts/equipment approaching soon, our stuff needs to be reorganized/cleaned up. Estimated time: 0.5 manweek.

25 January 2007VELO sub-projectsEddy Jans 2 22 Jan  16 Feb: - pull long-distance (RB84  D3) analog cables by INEO - “simultaneously” connectorize D3-side 19 Feb  23 Feb: - pull control cables (RB84  balcony) 26 Feb  2 Mar: - pull HV cables (RB84  D3) Cabling Cooling cables still need to be connectorized at both ends, i.e. RB84 and C3. Estimated time: 2*1 manweek.

25 January 2007VELO sub-projectsEddy Jans 3 Alignment Centre Frame Fiducial Marks Alignment procedure uses 5 fiducial points on each side of center frame. However, these are soon not visible anymore due to the repeater crates, mounted on the detector hood.

25 January 2007VELO sub-projectsEddy Jans 4 Solution: Install new alignment points above and below the existing ones. Watch out that the analog cable supporting frame is not in the way also. Estimated time: design: 1.5 mw construction: 1.5 mw implementation: 2*0.5 mw

25 January 2007VELO sub-projectsEddy Jans 5 Motion Increasing expertise with the system has revealed the necessity to take a few additional safety measures. Partly to be implemented in the PLC, partly in the PVSS application. moving both XL and XR in the same direction from a position in which XL=-XR, needs special precautions. implement the possibility to stop the stepper motor when really necessary (moving wrong way based on pot. meters, one side not moving at all, etc.) Estimated time: thinking: 2 mw implementation: 2 mw testing: 2*1 mw

25 January 2007VELO sub-projectsEddy Jans 6 Test bake-out procedure Bake-out procedure of rf-boxes has to be commissioned: regulation of lamps, temperature interlock, etc. Estimated time: preparation: 1 mw implementation: 2*1 mw

25 January 2007VELO sub-projectsEddy Jans 7 Turn over project Rotation of the detector half is a delicate, not yet well-established activity. Likely solution: Use 2 small cranes. Either powered by hand or electricity. Estimated time: preparation: 0.5 mw production of test tool: 0.5 mw ? testing: 2*0.2 mw

25 January 2007VELO sub-projectsEddy Jans 8  P project  x [mm]  p [mbar] (elastic) deflection:  mbar  mbar

25 January 2007VELO sub-projectsEddy Jans 9 evacuation  p=p beam -p det [mbar] foil hits sensors side

25 January 2007VELO sub-projectsEddy Jans 10 venting  p=p beam -p det [mbar] foil hits sensors side

25 January 2007VELO sub-projectsEddy Jans 11 Possible remedy: change  p- range and/or central  p- value. Estimated time: preparation: 2*1 mw testing: 2*0.5 mw

25 January 2007VELO sub-projectsEddy Jans 12 VELO vacuum commissioning Unacceptable leak rate (10 -5 mbar.l/s) of rf-boxes necessitates additional tests + attempts to (temporary) fix the problem. Present plan with VELO + part I of the beam pipe: evacuate bake 160 o C vent ?? evacuate ?? determine leak rate vent seal “holes” with Varnish evacuate determine leak rate Estimated time of NIKHEF-involvement: 2*2 mw

25 January 2007VELO sub-projectsEddy Jans 13 LHCb installation schedule Coming months lots of activities from RICH1, TT, VELO (HV, LV, ECS, etc.) in the vicinity of the VELO. Need for coordination, flexibility and mutual cooperation. Jan 22  Mar 2: Cabling (analog + control) around the VELO. March + April: installation LV-distribution boxes, HV-patch panels April 5: Start bake out + commissioning of the complete LHCb beam pipe.

25 January 2007VELO sub-projectsEddy Jans 14 Summary what wheretime [mw] start at the latest on ready before who 2.003&4cleanupIP80.51 Mar15 MarFM/MD/MK cooling cablesconnectorizeIP82*115 Mar1 AprJS+?? alignmentdesignNL1.51 Feb15 FebJvdB+FM productionNL1.520 Feb5 MarVU alignIP82*0.515 Mar23 MarJvdB+FM motiondesignNL215 Apr1 MayPdG+MvB codingNL215 May1 JunePdG+MvB testingIP82*115 Jun1 JulyPdG+MvB bake outdesignNL115 Feb1 MarPdG+MvB testingIP82*11 Mar10 MarPdG+?? turn overprepNL0.515 Feb1 MarMK/MD prod. of test toolNL0.51 Mar15 MarNIKHEF/CERN? testing??2*0.215 Mar1 AprMK+MD+RD pp prepNL2*120 Feb15 MarMD+LJ testingIP82*0.515 Mar1 AprMD+LJ vacuum comm.leak rate++IP82*210 Mar1 AprilLJ/MD/BM/FM