1. 6 September 2007VELOEddy Jans 0 VELO-installation++ activities September 6, 2007 General items Detector installation plans

2. 6 September 2007VELOEddy Jans 1 General A- and C-detector halves are ready in assembly lab. All TELL1’s are installed in D3 and being tested Connectorizing of analog cables + testing finished this week HV-cabling + testing finished this week LV-work is ongoing D3 A-side

3. 6 September 2007VELOEddy Jans 2 Control and readout of a dummy module (slice test in the pit) is making good progress. Programming of motion-PLC at CERN first week of October by MvB+PdG Some external level measurements by E.J. + Raphael (end of Sep. / early Oct.) Magnet test during first 2 weeks of October: - beforehand clean the area (service rack, heaters, ???) - restricted access - proposed VELO-activities: * measure magnetic field at turbo’s * check motion * check operation of LVDT’s ?? ECS/PVSS work to be done for FSM of motion, vacuum and cooling by FS and APC. States need to be defined by experts soon.

4. 6 September 2007VELOEddy Jans 3 PT100-cabling mystery of RF-boxes needs to be solved. Blow system is leaking. Needs fixing. Metrology results of alignment pieces of top frame show too large differences between Zeiss and Wenzel. mm Needs to be clarified !!

5. 6 September 2007VELOEddy Jans 4 Additional funding requested from coming CB for production of 42 VELO-modules by Q1 2010. Possible reasons: beam x VELO accident replacement due to radiation damage Preparation scheme of new detector halves yet unclear. Production of 2 complete spare detector bases (= base, hood, vacuum feedthroughs, long kaptons, evaporator, trolley) under discussion.

6. 6 September 2007VELOEddy Jans 5 Detector installation A lot of external constraints: magnet test, platform A-side, RICH1, TT, survey group, vacuum group, transport team, etc. Preliminary planning contains >60 items. Present version: - Oct. 22-24: * Survey the outside of the VELO by CERN-survey group * Comparison with previous data in collaboration with NIKHEF - Monday Oct. 29: * Open the VELO * Level + perpendicularity measurements of the detector supports by NIKHEF * Make adjustments if necessary/possible * Survey of the center, inner and top frames by CERN-group

7. 6 September 2007VELOEddy Jans 6 - Tuesday Oct. 30: * insert A-half + check performance. If still OK then - Wednesday Oct. 31: * insert C-half + check performance. - Thursday November 1: * final checkout + closing - Friday November 2: * evacuate beampipe + VELO - Monday+Tuesday November 5+6: * motion tests + precise positioning measurements - Wednesday+Thursday November 7+8: * venting with ultrapure Neon

8. 6 September 2007VELOEddy Jans 7 In November and December a lot of physics manpower is needed for commissioning of the whole VELO-chain (LV, HV, CB, TELL1, TB, DSS, interlocks, cooling). When all these items work reliably for one half then start operating that detector half.