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Simplified Procedure Draft

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Presentation on theme: "Simplified Procedure Draft"— Presentation transcript:

1 Simplified Procedure Draft
Vivien RUDE

2 COLD MASS

3 Straight reference table (marble or 3 supports)
Instruments Tracker : AT90x (+ gravity) or AT40x Reflector : CCR 1.5 inches Number of stations : 1 Dynamic measurement or static measurement (1 circle, 0.5 sec) for the flatness of the reference table Fast measurement (1 circle, 3 sec) for the 12 references Measurements Minimum of 100 measurement points on the reference table for the 3 supports ( 35 points on each support) 12 references (Orange) around the reference table Precision Flatness : r.m.s. < 60 µm Horizontality (w.r.t. the gravity) : +/- 0.1 mm Closure point :  Laser tracker precision Coordinate system Local frame : link to the gravity Special attention The reference table shall not interfere with the laser sights of the laser tracker necessary to the next measurements (next steps) TEST DIPOLE EDMS : ST Support 1 Support 2 Support 3

4 Magnetic measurement of the Cold mass (for surveyor)
Tools (provided by CERN) Wire station Instruments Tracker : AT90x (+ gravity) or AT40x Reflector : CCR 1.5 inches and CCR 0.5 inch Number of stations : 2 Fast measurement (1 circle, 3 sec) Measurements 12 references (Orange) 13 points (temporally glued with Hot Glue) on the cold mass (Bleu) Points installed on the wire support DC DL Precision Best-fit (7 parameter) with the data (mechanical measurement): RMS < 30 µm Closure point :  Laser tracker precision Coordinate system : Magnetic frame (to a given temperature) Primary axis : Y : best fit line to the cold bore measurement (NIPIP) Secondary axis : Z : average field direction of the magnet Origin : End cover reference point plane in NIP side ST Wire ST

5 STEP 0 : Mechanical measurement (Cold mass)
Tools (provided by CERN) Mole device Shank support Support for the holes Supports of the cold mass Instruments Tracker : AT90x (+ gravity) or AT40x Reflector : CCR 1.5 inches and CCR 0.5 inch Number of stations : 4 Fast measurement (1 circle, 3 sec) or Dynamic measurement Measurements 12 references (Orange) 13 points (temporary glued) on the cold mass (Bleu) Support of the cold mass (between the holes of the crown) Cold bore (one point each 50 cm from both side) Flanges (5 on each extremities) DC DL Precision RMS of the least square adjustment : < 30 µm Closure point :  Laser tracker precision Coordinate system : Mechanical frame (to a given temperature) Primary axis : Y : best fit line to the cold bore measurement (NIPIP) Secondary axis : X : DC9DC10 Origin : Projection of the middle support of the cold mass to Y-axis Mole TEST DIPOLE EDMS : Support of the cold bore ST ST ST ST

6 Installation of the supports (for FSI targets)
Tools (provided by CERN) Wedges for the supports installed on the top of the cold mass Data (provided by CERN) Theoretical input of the supports (position of the center of the factice insulated supports (A.) + projection on the mean axis (B.)) Instruments Tracker : AT90x (+ gravity) or AT40x Reflector : CCR 1.5 inches and CCR 0.5 inch Number of stations : 2 Fast measurement (1 circle, 3 sec) Measurements 12 references (Orange) 13 points (temporally glued with Hot glue) on the cold mass (Bleu) Centers of supports (after welding) Precision Installation to the theoretical input : < 2 mm Closure point :  Laser tracker precision Coordinate system : Cylindrical coordinate system Primary axis : Z : A.  B. Secondary axis : Y : mean axis Origin : A. Special attention Only the X and Y data for each support in its cylindrical coordinate system are relevant during the installation. The data Z indicates the defect in cylindrical shape of the cold mass. The orientation of the supports are crucial. Each support will be equipped with visual reference in order to orientate the support. TEST DIPOLE EDMS : During the installation Cylindrical Coordinate System A1 A1 Cold mass Support (for top support) B Cylindrical Coordinate System A2 A2 Support (for botom support)

7 Cold mass transport (to Cryostating bench)
For Dipole test  from 180 to SMI2 TEST DIPOLE SMI2

8 Installation of MLI, insulated targets and thermal shielding
Tools (provided by CERN) Insulated supports equipped with FSI targets thermal shielding masking plate No Measurements Sequencing and calendar of work 1  Uninstall the 13 points (temporally glued with Hot glue) on the cold mass 2  Installation of MLI on the cold mass 3  Cut out the MLI for each support 4  Installation of the thermal shielding 4  Installation of Insulated supports with FSI target 5  Final installation of MLI, tape , … 6  Installation of the thermal shielding masking plate 7  Fixation of the masking plate (rivet) Always towards cryostat end Supports positioned always with single threaded hole (over the middle of the groove) towards cryostat end

9 Vacuum Vessel

10 Vacuum vessel control (at CERN)
Tools (provided by CERN) Supports 1.5 inchs (stainless steel) Sequencing and calendar of work 1  Marking the position of the support 1.5 inchs 2  Welding of the support 3  Laser Tracker measurement Instruments Tracker : AT90x (+ gravity) or AT40x Reflector : CCR 1.5 inches and CCR 0.5 inch Number of stations : 4 Dynamic measurement for the cold bore tube, flange Static measurement (1 circle, 3 sec) for the 12 references and the 13 points on the cold mass Measurements 12 references (Orange) 13 points welded on the Cryostat (Yellow) Flange on each extremities Cold feet support Jack interface (between jack head and cryostat  circle and plane fitting) Flange for FSI feedthrough  circle and plane fitting Precision Closure point :  Laser tracker precision Coordinate system : Mechanical frame (to a given temperature) Primary axis : Y : Line of the cryostat extremity flange Secondary axis : normal vector to the best fit plane of the two extremity jack interface Origin : Center of cryostat extremity flange (NIP side) Jack interface measurement Jack Head ST ST ST ST

11 Cryostat transport (CERN  FERMILAB)

12 CRYOSTATING At Fermilab
TEST DIPOLE SMI2

13 Measurement after cryostating

14 Measurement after ccryostated assembly (at Fermilab, after cold test)
Instruments Tracker : AT90x (+ gravity) or AT40x Reflector : CCR 1.5 inches and CCR 0.5 inch Number of stations : 4 Static measurement (1 circle, 3 sec) Measurements 12 references (Green) 13 points welded on the Cryostat (Yellow) DC DL Cold bore (one point each 50 cm from both side) Flanges (5 on each extremities) Magnetic measurement (warm) Precision Closure point :  Laser tracker precision Best-fit (7 parameter) with the Cold mass data (mechanical measurement): RMS < 30 µm Best-fit (7 parameter) with the Cryostat data (mechanical measurement): RMS < 30 µm Coordinate system : Have to be define (cold mass, cryostat, magnetic axis, mechanical axis) ST ST ST ST

15 Transport (FERMILAB  CERN)

16 Measurement at CERN (Cold mass fiducialisation with glass spheres)
Tools Tripod (high and low position) Instruments Tracker : AT90x (+ gravity) or AT40x Reflector : CCR 1.5 inches and CCR 0.5 inch Number of stations : 14 Fast measurement (1 circle, 3 sec) for the 12 references and the points Precise measurement (2 circles, 5 sec) for the FSI targets Measurements 12 references (Green) 13 points welded on the Cryostat (Yellow) DC DL FSI targets (Black) Cold bore (one point each 50 cm from both side) Flanges (5 on each extremities) Magnetic measurement (warm) Precision Closure point :  Laser tracker precision Best-fit (7 parameter) with the Cold mass data (mechanical measurement): RMS < 30 µm Best-fit (7 parameter) with the Cryostat data (mechanical measurement): RMS < 30 µm Special attention The minimum distance between the Laser Tracker and the Targets should be bigger to 85 cm in order to measure. ST ST ST ST ST ST ST ST ST ST ST ST ST ST

17 FSI Measurement at CERN (for validation)
Tools Feedthrough (with calibration) FSI acquisition system Optical fibers Instruments Tracker : AT90x (+ gravity) or AT40x Reflector : CCR 1.5 inches and CCR 0.5 inch Number of stations : 2 Fast measurement (1 circle, 3 sec) Measurements 12 references (Green) 13 points welded on the Cryostat (Yellow) Targets on the feedthroughs Precision Closure point :  Laser tracker precision Best-fit (7 parameter) with the Cryostat data (mechanical measurement): RMS < 30 µm

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