Richard Soluk – U of Alberta – June 9, 2015

Upstream Face of VELO

TMU521 Turbo Pump Design not available from manufacturer Pump in red square, part above square is additional vacuum manifold

Reference Pump TMU071 Similar pump design, approximately ¼ the volume of model in LHCb Height is similar, diameter is roughly ½ of TMU521 Extrapolate interior components from this pump and available TMU521 pictures

Exterior Pump Dimensions Graphic covers 4 different pump configurations Either a DN100 or DN160 size high vacuum flange Either KF or CF flange type In our case we have a DN160 CF flange (see the top left side of the lower diagram)

Pump Model Implement pump as series of cylindrical shells Relative coordinates with z=0 being the face of the CF160 flange z positive goes into the pump body R outer is the cylinder OD, R inner the cylinder ID Height is the length of the cylinder “Z of center” is the z position of the center of the cylinder Densities are material defaults except for the base Heating collar, cooling loop and electronics not included R outer(mm)R innerHeightZ of centerMaterialDensityNotes SSHV flange could be either 304 or 316SS SSOuter case FeMagnets (type unknown use Fe) FeMagnets FeMagnets AlShaft AlShell and rings around blades AlShells around rotor AlRotor blades SSBottom flange CuMotor coil SS2.0Base. Use lower density to account for shape AlShell blades attached to

VELO Vacuum System Drawings CERN CDD database has drawings of most of the custom vacuum components on the VELO Starting diagram is LHBTVV_0087

Extra Manifold Small custom vacuum manifold does not appear in the CDD drawing database Have estimated the dimensions based on photographs Am trying to get the actual fabrication drawing used to make it

Slides showing geometry overview… Extra Slides

LHCb Coordinate System

LT-NTD Installation Scheme