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Analog Alignment Sensors Status report – April 2004

Analog Alignment Sensors Status report – April 2004. Marcus Hohlmann Florida Tech. Activities since last meeting. Florida Tech alignment group met with Dave Eartly on campus Feb 11 & 12 Worked out exact calibration goals & procedures and a tentative schedule

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Analog Alignment Sensors Status report – April 2004

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  1. Analog Alignment SensorsStatus report – April 2004 Marcus Hohlmann Florida Tech

  2. Activities since last meeting • Florida Tech alignment group met with Dave Eartly on campus Feb 11 & 12 • Worked out exact calibration goals & procedures and a tentative schedule • Final calibration setup being designed and built • Current focus on R sensors and clinometers (most “complex”) M. Hohlmann - EMU meeting at Ohio State University, Columbus

  3. Radial alignment across back & front chambers “up” = front chamber “down = back chamber” M. Hohlmann - EMU meeting at Ohio State University, Columbus

  4. R-sensor positions & mounts DCOPS & R-sensor mounted on plate ME-2 example: wire ME 2-1 “up” ME 2-2 “down” DCOPS & R-sensor mounted on tower R-post Straight Line Monitor wire R-sensors To transfer plate with R-post CAD Drawing by FNAL M. Hohlmann - EMU meeting at Ohio State University, Columbus

  5. R-sensor calibration bench DCOPS & R-sensor mounting towers (“left” & “right”) Florida Tech calibration bench high R-post Dowel holes of mounting plate or tower in line with mover axis Linear mover (6 μm step size) Base for towers low R-post Base with dowel pins for attaching DCOPS & R-sensor mounting plates (“left” & “right”) 3D drawing by M. Ripert (Fl. Tech) M. Hohlmann - EMU meeting at Ohio State University, Columbus

  6. Calibration bench: Reality M. Hohlmann - EMU meeting at Ohio State University, Columbus

  7. R-sensor calibration Defined the distance d that will be calibrated: Top view possible SLM line possible true radial direction linear mover R-sensor (wire extension potentiometer) extended wire direction of motion R-post (precision dowel pin) d precision dowel hole (known in CMS geometry) Distance d we will calibrate: “center R-post to center dowel hole” • Calibration will produce (non-linear) Vsensor(d) • Will calibrate over range Δd ≈ 3 cm Mounting plate or tower M. Hohlmann - EMU meeting at Ohio State University, Columbus

  8. SLM Clinometers in alignment system Clinometers monitor inclination of alignment transfer plates -45o 15o Transfer plates are mounted at 6 different angles in φ 75o M. Hohlmann - EMU meeting at Ohio State University, Columbus

  9. Clinometer mounts 6 different mounts accommodate various angles of transfer plates, so that null-positions of clinometers are horizontal Mount production: Wisconsin / FNAL Clinometers mount onto horizontal red surfaces All 3-D clinometer drawings: T. Moschoutis (Fl. Tech) M. Hohlmann - EMU meeting at Ohio State University, Columbus

  10. calibrated linear mover sensing liquid Θ Clinometer Clinometer calibration prototype M. Hohlmann - EMU meeting at Ohio State University, Columbus

  11. Clinometer calibration Calibrated moving table Clinometer mount Red surface indicates position of clinometer Jig (mounts in 2 pos. for calibrating tilts in x and y) spring-loaded base plate All 3-D clinometer drawings: T. Moschoutis (Fl. Tech) Final design M. Hohlmann - EMU meeting at Ohio State University, Columbus

  12. Mounting Clinometersfor calibration (1) • Mounts: • Wisconsin / FNAL • Jig: • in production at • Fl. Tech 45o clinometer mount 75o clinometer mount Clinometers mount onto horizontal red surfaces Jig #1 for mounting 3 clinometer mounts onto calibration device 15o clinometer mount All 3-D clinometer drawings: T. Moschoutis (Fl. Tech) M. Hohlmann - EMU meeting at Ohio State University, Columbus

  13. Mounting Clinometersfor calibration (2) Jig #4 for mounting -45o mount Jig #2 for mounting -75o mount Clinometers mount onto horizontal red surfaces • Mounts: • Wisconsin / FNAL • Jigs: • in production at • Fl. Tech Jig #3 for mounting -15o mount 15o clinometer mount All 3-D clinometer drawings: T. Moschoutis (Fl. Tech) M. Hohlmann - EMU meeting at Ohio State University, Columbus

  14. Base plate leveling • Use Surveyor’s Laser Level to find true horizontal position for base plate • Expected leveling precision: 0.1 mrad (0.5 mm over 5 m) • (compare to 0.01o = 0.175 mrad clinometer resolution) M. Hohlmann - EMU meeting at Ohio State University, Columbus

  15. Other progress • Calibration DAQ • Replaced RS232 serial line for PC – Agilent Multimeter communication with parallel GPIB interface to avoid LabView buffer overruns • COCOA alignment program • student Sara Walker has compiled latest greatest COCOA version 3.2.1 on CMS cluster at FNAL • slow progress: compiler problems, version changes, … • made deal with Robert Lee: help in exchange for writing a COCOA user manual • getting help from Pedro Arce at CERN M. Hohlmann - EMU meeting at Ohio State University, Columbus

  16. Calibration schedule • May 4, 04 • UW/FNAL (Dave in person) delivers to Fl. Tech at least one final mount with sensor attached for every type • by mid-June • Fl. Tech finalizes calibration setups for all sensor types • mid-June • Fl. Tech starts calibrating sensors for ME-2 • by early September • Fl. Tech has calibrated all ME-2 sensors (=1/8 of total) • mid-September • Ship calibrated sensors to CERN for installation on ME-2 • September 04 - … 2005 • Fl. Tech continues calibrations & delivery for other disks M. Hohlmann - EMU meeting at Ohio State University, Columbus

  17. Management issues • Progress • Fl. Tech/CMS MoU for EMU in place since 3/3/04 • SoW for EMU work in FY04 in place since 3/26/04 • Fl. Tech accounting waiting for FNAL P.O. … • External Funding • NSF turned us down: • very positive on technical issues in proposal • But: “viability” issues: new group, small group, … • 9% cut for HEP @ NSF for FY04 • Insufficient support from CMS (letters not enough !) • NSF recommends strengthening cooperation with other Florida Institutions ( UF !) & starting physics preparation • Will try again for fall (DOE/NSF)… M. Hohlmann - EMU meeting at Ohio State University, Columbus

  18. Loosely related news • Have formed a “GRID group” at Fl. Tech: • working with 6 other faculty (4 CS, 2 IT, 2 math) • ante a 48 node Beowulf cluster to join Grid2003 ?! • LB & MH interested in CMS software: • development of software alignment tools • get involved in PRS Muon → physics with muons • possibly ride the tail end of ‘Data Challenge 04’ ?! • CS & IT people interested in developing grid middleware & other grid infrastructure: • privacy • process mobility, swarm intelligence, … M. Hohlmann - EMU meeting at Ohio State University, Columbus

  19. Even more loosely related news Then… New Physics Building …now ! M. Hohlmann - EMU meeting at Ohio State University, Columbus

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