Presentation is loading. Please wait.

Presentation is loading. Please wait.

Status Update on Mechanical Prototype in Rome November 6, 2013 1.

Published byGriselda Gibbs Modified over 9 years ago

Similar presentations

Presentation on theme: "Status Update on Mechanical Prototype in Rome November 6, 2013 1."— Presentation transcript:

1 Status Update on Mechanical Prototype in Rome November 6, 2013 1

2 Introduction We have built the mechanical M2 quadruplet prototype: – Assembly of the 5 panels with the “vacuum bag” technique (with some variants); – Assembly of the quadruplet. Outline of the talk: – Description of the method used for the assembly of the last 2 panels (two-steps gluing technique); – M2 panels: structure and components – Results of planarity measurements of the last 2 panels; – Quadruplet assembly; – Conclusions. 2

3 Method of construction - I Vacuum bag technique. Vacuum bag operated with an underpressure of 50 ÷ 100 mbar. 3

4 Method of construction - II First 3 panels (see july workshop presentation) : – Single-step vacuum bag gluing: PCB-1 on the granite table, PCB-2 on the honeycomb “pushed” by the bag. Glue is put on both PCBs;  asymmetric planarities obtained (*) ≈ 10 ÷ 20  m (bottom side) ≈ 30 ÷ 50  m (top side) Last 2 panels: – Two-steps vacuum bag gluing: PCB-1 glued as above. After a time  t the panel is turned and glued to PCB-2 standing on the granite table. –  t = 24 or 5 hrs (glue curing time ≈ 15 hrs @ 20 o ) (*) Module 2 built with segmented honeycomb has larger RMSs 4

5 Test of two-step gluing method Aim of the method: reach a good planarity on both sides of the panel. We have done several tests to validate the two-step method, both with  t=5 and  t=24 hrs. 100x60 cm 2 panel  planarity below 20  m on both sides  thickness value -26  m wrt nominal  t = 24 hrs SIDE 1  t = 24 hrs SIDE 2 frame points frames were not rectified in this test 5

6 M2 panels – general structure 6 1103.2 mm 916 mm 1628.5 mm Aluminium rectified frames: 40 mm the outer frame 20 mm the inner bar

7 M2 panels - components PCB foilsHoneycomb NOMEX Aluminum frame nominal thickness (mm) 0.510 effective average thickness (mm) 0.40 0.56 (G10 foils) 10.04010 planarity RMS (  m) ≈ 20 ÷ 30≈ 25 PCB measurements done by PV group on sucking plane. Honeycomb measurements done using the LNF laser tracker with a gauge block above it. Frame thickness and planarity checked with Mitutoyo. Glue Araldite 2011: the glue is rolled to give a uniform layer of ≈ 60  m thickness. Nominal thickness=2x0.40+2x0.06+10.040=10.960 (11.120 panel 2) mm 7

8 Methods of planarity measurement - I Laser tracker @ LNF ≈2500 points with few  m accuracy 8

9 Methods of planarity measurement - II CMM Machine @ INFN Pisa (points are in a 4 cm spacing lattice) ≈700 points with 2  m nominal precision 9

10 Analysis of planarity measurements  A list of 3D points wrt a plane defined by the machine itself (obtained by measuring the granite table). Our analysis: – Raw distribution of heights of the points   RAW – Fit of the “best plane” ,  X,  Y – Distribution of heights wrt fitted plane   FIT All these infos are given in the following. LNF laser tracker is our baseline measurement, comparison with CMM will be shown. 10

11 Comparison between planarity measurements: LNF (laser tracker) vs. Pisa (CMM machine) – panel 5 side 1 11

12 Comparison between planarity measurements: LNF (laser tracker) vs. Pisa (CMM machine) – panel 5 side 2 12

13 Angles of fitted planes Panel  X (LNF)  X (Pisa)  Y (LNF)  Y (Pisa) 4_13236-116 4_21217-18-10 5_11426-39-7 5_2-130-3514 RMS(LNF) = 25  rad RMS(Pisa) = 16  rad Correlation LNF-Pisa: Some correlation is present. 13  X,Y (Pisa)  X,Y (LNF)

14 Results: panel 4 (  t = 24 hrs) side 1 14  RAW (RMS) = 24.4 (28.6)  m  FIT (RMS) = 26.2 (27.0)  m removing the frames:  FIT = 21.7  m

15 Results: panel 4 (  t = 24 hrs) side 2 15  RAW (RMS) = 29.0 (30.7)  m  FIT (RMS) = 28.1 (27.9)  m removing the frames:  FIT = 22.9  m

16 Results: panel 5 (  t = 5 hrs) side 1 16  RAW (RMS) = 36.5 (39.1)  m  FIT (RMS) = 35.7 (35.7)  m “depression” on external frame removing the frames:  FIT = 22.8  m

17 Results: panel 5 (  t = 5 hrs) side 2 17  RAW (RMS) = 39.2 (41.2)  m  FIT (RMS) = 35.2 (38.8)  m “depression” on external frame removing the frames:  FIT = 21.5  m

18 Summary - I Panel #construction  (  m) (1) overall  (  m) (2) no frame Thickness (3) (mm) 1One-step gluing16 47 11 34 10.948 (-12) CMM machine 2One-step gluing (segmented hc) 85 76 73 54 11.154 (-34) CMM machine (not to be considered) 3One-step gluing15 41 12 38 10.963 (+3) CMM machine 4Two-step gluing (  t = 24 hrs) 26 28 22 23 10.927 (-33) Laser tracker 5Two-step gluing (  t = 5 hrs) 36 35 23 21 10.959 (-1) Laser tracker (1)Sigma obtained after plane fitting  FIT (2)The measurement is performed removing all points within 10 cm from the frame (3)Thickness measured with side 1 in the table. In () difference in  m wrt nominal. 18

19 Summary - II Planarities: – Two-steps method with  t = 24 hrs turns out to be the best option with overall planarities RMS well below 30  m on both faces. – Improvements expected by a better “definition” of the frame  20  m planarities can be reached. Panel thickness wrt nominal (assuming 2x60  m glue thickness) : – In average -15  m with an RMS of 17  m. – Improvements expected by a better control of the glue amount. Methods of measurement – CMM machine and Laser-tracker give results in good agreement. 19

20 Quadruplet assembly - I Assembly scheme: Panels are glued to drift gap frames (5 mm thick Al not rectified, 20 mm wide) No vacuum bag used, gluing by gravity all panels in a single step. 20

21 Quadruplet assembly - II 21

22 Quadruplet assembly - III Precision pins Connecting the two “strip panels”. 22

23 Status of quadruplet Mechanical properties still to be measured. Probably a “sag” effect on the top side, to be quantified. We plan to make holes along the frame to allow mounting on the spacer. 23

24 Conclusions M2 dummy quadruplet ready to be mounted (only holes are still missing). Vacuum bag technique (with two-steps gluing option) allows to get: – Overall planarities below 30  m on both sides; – Average thickness reproducibility better than 20  m; – Space for improvements from better frame structure and glue amount control. Plan to build a full-size SM1 drift panel using the two-step method with  t = 24 hrs 24

25 Backup 25

26 26

27 27

28 28

Download ppt "Status Update on Mechanical Prototype in Rome November 6, 2013 1."

Similar presentations

Lyon Gantry Status TEC meeting Dec. 2003 D. Contardo Module production in Lyon Rigidifier test on R4 Frame tolerance effect on assembly plates Short term.

Lyon Gantry Status TEC meeting Dec D. Contardo Module production in Lyon Rigidifier test on R4 Frame tolerance effect on assembly plates Short term.
Muon EDR: Chamber design M2/3 R1/2 16/04/20031T.Schneider/LHCb Muon EDR 1.General description - AW read out -Cathode pad read out -HV supply 2.Details.

Muon EDR: Chamber design M2/3 R1/2 16/04/20031T.Schneider/LHCb Muon EDR 1.General description - AW read out -Cathode pad read out -HV supply 2.Details.
1 Short update Itzhak Tserruya HBD meeting BNL, April 11, 2006.

1 Short update Itzhak Tserruya HBD meeting BNL, April 11, 2006.
sTGC for ATLAS Small Wheel upgrade

sTGC for ATLAS Small Wheel upgrade
Status of the ATLAS MM project

Status of the ATLAS MM project
2005 LAT-COLLABORATION MEETING Gamma-ray Large Area Space Telescope A walk through the LAT Tracker towers alignment Nicola Omodei INFN-Pisa.

2005 LAT-COLLABORATION MEETING Gamma-ray Large Area Space Telescope A walk through the LAT Tracker towers alignment Nicola Omodei INFN-Pisa.
ATLAS-NSW CERN MMM workshop assembly of the module (quadruplet)

ATLAS-NSW CERN MMM workshop assembly of the module (quadruplet)
The Intermediate Silicon Layers detector OUTLINE ISL inside CDFII Why the ISL? Conceptual Design Ladders and Spaceframe Rasnik Online Alignment System.

The Intermediate Silicon Layers detector OUTLINE ISL inside CDFII Why the ISL? Conceptual Design Ladders and Spaceframe Rasnik Online Alignment System.
G.Barber Tracker Update, Berkeley 10 Feb 20051 Tracker Progress Contents:- Station Space Frame Patch Panel / Vacuum Seal Light Guide Map Position of Degrader/Support.

G.Barber Tracker Update, Berkeley 10 Feb Tracker Progress Contents:- Station Space Frame Patch Panel / Vacuum Seal Light Guide Map Position of Degrader/Support.
MM mechanical prototype Work progress at CERN MicroMegas General Meeting, CERN, 5-6 November 2013 1.

MM mechanical prototype Work progress at CERN MicroMegas General Meeting, CERN, 5-6 November
Operational prototype work at CERN Status report MM Gen. Meeting, 06/11/2013 J. Wotschack1.

Operational prototype work at CERN Status report MM Gen. Meeting, 06/11/2013 J. Wotschack1.
Production of precise large PCB’s Introduction to the problem Achievement in collaborating with industry (Print Electronics in IL and MDT in Italy). Conclusions.

Production of precise large PCB’s Introduction to the problem Achievement in collaborating with industry (Print Electronics in IL and MDT in Italy). Conclusions.
CERN PH/DT 12/05/13 Jordan Degrange / Francisco Perez Gomez CERN PH/DT.

CERN PH/DT 12/05/13 Jordan Degrange / Francisco Perez Gomez CERN PH/DT.
CERN PH/DT 30/01/14 Francisco Perez Gomez CERN PH/DT.

CERN PH/DT 30/01/14 Francisco Perez Gomez CERN PH/DT.
MM mechanical prototype Work progress at CERN MMM Rome, 15/07/20131.

MM mechanical prototype Work progress at CERN MMM Rome, 15/07/20131.
DELTA Quadrant Tuning Y. Levashov, E. Reese. 2 Tolerances for prototype quadrant tuning Magnet center deviations from a nominal center line < ± 50  m.

DELTA Quadrant Tuning Y. Levashov, E. Reese. 2 Tolerances for prototype quadrant tuning Magnet center deviations from a nominal center line < ± 50  m.
June 8-th 2004W.Baldini1 Ferrara production center Ferrara production center Production Readiness Review OverviewOfOperations P R R.

June 8-th 2004W.Baldini1 Ferrara production center Ferrara production center Production Readiness Review OverviewOfOperations P R R.
1 TEC pilot run status Goal : test TEC module production rate capabilities - 15 R6 modules assembled on Brussels Gantry and bonded in Aachen I - 15 R7.

1 TEC pilot run status Goal : test TEC module production rate capabilities - 15 R6 modules assembled on Brussels Gantry and bonded in Aachen I - 15 R7.
1 GLASTGLAST Pisa GLAST Italia meeting, 18/02/02 A.Brez – INFN Pisa GLAST:Gamma Ray Large Area Telescope Ladders, Trays and Towers Construction A.Brez.

1 GLASTGLAST Pisa GLAST Italia meeting, 18/02/02 A.Brez – INFN Pisa GLAST:Gamma Ray Large Area Telescope Ladders, Trays and Towers Construction A.Brez.
EC front unit status. Outline Conclusions from mechanical prototype and actions taken Status of electrical prototype KIT’s work for TA Dev plan (tests)

EC front unit status. Outline Conclusions from mechanical prototype and actions taken Status of electrical prototype KIT’s work for TA Dev plan (tests)

Similar presentations

Ads by Google