OT Survey & Adjustment 11-06-2007 Outline: Survey technique C-Frame survey and adjustment Survey data Photogrammetry Long-term??

OT Overview Modules Bridge C-frame OT Cryo-Platform Table & Cable Trays December 31, 2018 Antonio Pellegrino

“A” Side “C” Side OT C-Frames Z X IP T3-Q02-VX T3-Q02-XU T2-Q02-VX December 31, 2018 Antonio Pellegrino

36  (Px,Py,Pz) survey points: mostly only 18 measured (1 Layer) 2 3 4 5 6 7 8 9 dowel pins 1 2 3 4 5 6 7 8 9 2 Layers  9 Modules/Layer  2 dowel pins/Module (top/bottom) 36  (Px,Py,Pz) survey points: mostly only 18 measured (1 Layer) December 31, 2018 Antonio Pellegrino

Stick survey target in here! Targets Stick survey target in here! dowel pins December 31, 2018 Antonio Pellegrino

Adjustments What knobs can you turn if the survey turns out to be crap? Displace hook block wrt to frame modifies XLHCb Displace roller block wrt to frame modifies ZLHCb Adjust spacer under trolley modifies YLHCb December 31, 2018 Antonio Pellegrino

Example Survey: Z of T2-XU ZSU YSU XSU Dowel pin deviations from nominal positions in XSU (ZLHCb) toward Magnet toward RICH2 December 31, 2018 Antonio Pellegrino

Example Survey: X of T2-XU ZSU YSU XSU Dowel pin deviations from nominal positions in ZSU (YLHCb) higher lower December 31, 2018 Antonio Pellegrino

Example Survey: X of T2-XU ZSU YSU XSU modified (known translation in XLHCb) after Survey! Dowel pin deviations from nominal positions in YSU (XLHCb) toward A toward C December 31, 2018 Antonio Pellegrino

Adjustment Ready & Survey Up to date Overview of Survey Adjustment Ready & Survey Up to date Adjustment Ready, but modified (known translation in XLHCb) after Survey T3-Q13-VX T3-Q02-VX T3-Q13-XU T3-Q02-XU “A” Side T2-Q13-VX T2-Q02-VX “C” Side T2-Q13-XU T2-Q02-XU T1-Q13-VX T1-Q02-VX T1-Q13-XU T1-Q02-XU X IP December 31, 2018 Antonio Pellegrino

Survey Data Web Page In cooperation with the CERN Survey group (J.-C. Gayde, S. Berni, et al.) Overview on OT Survey Web Page Description Data Analysis Date Comment Table Survey at CERN EDMS 733968   11-May-2006 Bridge Survey at CERN EDMS 756237 OT-Alignment-1.9.doc 13-Jul-2006 Bridge+Table-Analysis-18072006.xls T3-Q02-VX Survey EDMS 870088 T3-VX.xls 3-Sep-2007   T3-Q13-VX Survey EDMS Report with “raw” survey data Analysis: determination of dowel pins deviations from nominal positions December 31, 2018 Antonio Pellegrino

Photogrammetry Concept: Measure several points on detector surface to check flatness between top/bottom dowel pins Targets about 80% of OT surface equipped with targets equip the rest?? (main problem manpower and access) Surveyed T1-Q13-XU in open position Survey T1-Q13-XU in closed position and compare?? December 31, 2018 Antonio Pellegrino

Summary All C-Frames surveyed and adjusted at least one layer per C-Frame, 18 dowel pins ~200 points, some of which measured 9 times!? CAVEAT: must be compatible with C-Frame closure once all electronics installed (June + July 2008) Survey Data published in EDMS reports a couple of mistakes to be corrected  new reports Discussion with Jan & Wouter about alignment constants for CondDB (X0,Y0,Z0,,,) per module make planar fit to each layer and derive (X0,Y0,Z0,,,) ? 1-2 weeks work Photogrammetry: decide how to proceed if present schedule, probably give up December 31, 2018 Antonio Pellegrino