Alignment system home page

Barrel Alignment

• General documents
• General description, subsytems and specifications for positioning tolerances (09/10/00) (pdf)
• Layout and implementation of the alignment sensors on all chamber types (sketches, 10/01/01)

BIL-BIS standard sector (ppt)  BIS-BIM-BIR sectors 14-15 (ppt)  BML-BMS standard sector (ppt)  BML-BMF sectors 13-14-15 (ppt)  BOL-BOS standard sector (ppt)  BOL-BOF-BOG sectors 13-14-15 (ppt)

• List of the required RASNIK elements,(01/09/00) (ps)(xls)
• Geometry parameters and calibration constants, (13/11/00) (ps)(ppt)
• List of the required elements, cost estimate (17/03/98) (ps)
• Principle drawings
• BOG-BOH connection (ps)
• BIL-BIR connection (ps)
• Axial-praxial top view (jpg)
• Example of praxial proximity sensor (ps)
• Projective and axial/praxial sensors on BML (ps)
• Sketch of the reference system (standard sector) (ps)
• Sketch of the reference system (standard sector, new simplified version, 08/01/2001) (jpg) 
• BIS-BIL optical connection (ps)
• BOS-BOL optical connection (ps)
• Alignment ray trajectories
• General transverse view of the spectrometer (ps)
• Standard sector: Transverse view of the projective rays (ps)
• Standard sector: Longitudinal view of the projective rays (ps)
• Engineering drawings
• Standard sector: Transverse view (ps)
• Standard sector: Longitudinal view (ps)
• Sector 13: Transverse view (ps)
• Sector 13: Longitudinal view (ps)
• Sector 13: Transverse view with reference bars (ps)
• Sector 13: 3D view (ps)
• Praxial/axial sensor (01/99)(ps)
• Praxial/axial platform (01/99)(ps)
• Praxial/axial plateform location on BML (01/99)(ps)
• Praxial/axial sensors on BML (01/99)(ps)
• Projective sensor support (01/99)(ps)
• Projective platform (01/99)(ps)
• Projective plateform location on BML (01/99)(ps)
• Projective sensors on BML (01/99)(ps)
• Reference system integration in a standard sector (10/00)(ps)
• Reference system trajectories in a standard sector (10/00)(ps)

End Cap Alignment

• General specifications (ps)
• Bar specifications (txt)
• Layout, bars/sensors implementation (Brandeis data base)
• Bar measurement in Freiburg (Freiburg site)

The opto-electronical sensors

• The RASNIK system for ATLAS: Technical description (09/00) (pdf)
• The RASNIK system (NIKHEF)
• Information on MPA-ALMY sensors (MPI Munich site)
• STAMP (Saclay Telescope for the Alignment of Many Points)
• Principle drawing (first version) (ps)
• Principle drawing (DATCHA version) (ps)
• Artist view (DATCHA version) (gif)
• General presentation and Freiburg test results (preliminary) (Microsoft PowerPoint document)
• BCAM optical monitors (Brandeis data base)

Barrel platform positioning

• Positioning tolerance for Praxial and projective plateforms (ps)
• Procedure for praxial platform positioning during MDT assembly (MicroSoft PowerPoint document)

Initial chamber positioning tolerances in the ATLAS muon spectrometer

• Constraints from the measurement precision and alignment sensor ranges (ps)

Programs

• The alignment reconstruction software (ps)
• OO/C++ alignment reconstruction: ASAP program (ATLAS Spectrometer Alignment Program) , Preliminary version for one Barrel tower and Saclay EC DATCHA (tar file)
• In-plane alignment reconstruction (text)

• Data base (old proposal) (text)
• Barrel tower Data base (for ASAP) (text)
• Saclay DATCHA Data base (for ASAP) (text)