1. Dmitry Gudkov BE-RF-PM CLIC Module Working Group Engineering design of the adjustable supporting system for DBQ

2. Dmitry Gudkov BE-RF-PM Contents 1.Test module in the lab. Current configuration of the DBQ support; 2.Proposed solutions for future; 3.Detailed description of the new DBQ support; 4.Integration of the new DBQ support; 5.Future tasks.

3. Dmitry Gudkov BE-RF-PM Test module in the lab. Current configuration of the DBQ support According to presentation by S. Griffet: https://indico.cern.ch/getFile.py/access?contribId=6&resId=0&materialId=slides&confId=112541 the following disadvantages of the current DBQ support configurations are found out: Difficult lateral alignment procedure (disassembling of DBQ / plate, adjusting, assembling needed) Fixing the supporting plate to the girder by using screws creates lateral misalignment The part of the cradle blocks the supporting plate during the longitudinal displacement.. The following solutions are proposed to improve the current DBQ supporting system configurations..

4. Dmitry Gudkov BE-RF-PM SOLUTIONS (F. Rossi) 1 st solution: KEEP current design2 nd solution: CHANGE current design 1.De-installation of PETS units and magnets 2.Machining of magnets supports close to cradles 3.Machining of vacuum tank supports 4.Drilling holes in the floor for extremity flanges supports 5.Installation and alignment of PETS units and magnets ADVANTAGES: Minor modifications to magnets supports DISADVANTAGES: Critical issues concerning the alignment of magnets 1.New design of magnets supports 2.Manufacturing of new magnets supports 3.De-installation of PETS units and magnets 4.Machining of vacuum tank supports 5.Drilling holes in the floor for extremity flanges supports 6.Installation and alignment of PETS units and magnets ADVANTAGES: Possibility to test and validate the new design by means of TM0: any required modifications will be implemented for TM1 in order to improve the final design Improvement of alignment operations DISADVANTAGES: Required time (2-3 months from now)

5. Dmitry Gudkov BE-RF-PM SOLUTIONS (F. Rossi) 2 nd solution: CHANGE current design Z+ Y+ X+

6. Dmitry Gudkov BE-RF-PM DBQ support engineering design -The design is based on the system of the mutually embedded frames -Each frame can be moved in one direction -Micrometric adjustment screws are used for fine movement -The lower frame is rigidly linked with the girder -To minimize the friction during the lateral movement the ball transfer units are used -All the movable frames can be fixed after adjustment in correct position -Parts of the support don’t require high precision machining -All assembly operations are made by standard fasteners -If test results are positive, the current concept can be used for the future test modules (LAB, CLEX)

7. Dmitry Gudkov BE-RF-PM DBQ support engineering design 1.Installation of the load-bearing frame on the girder: Contact with girder Fastening of the frame -Rubber shims can be used to protect the girder -Precise reference surfaces are not needed on the girder

8. Dmitry Gudkov BE-RF-PM DBQ support engineering design. Vertical movement Z+ Y+ X+ Z+ Y+ X+ Required movements: -Vertical adjustment (Z-axis); -Tilt (rotation around X-axis); -Tilt (rotation around Y-axis). -3 (4) vertical adjustment screws are used to implement these three movements -Screws have two threads with different pitch for fine tuning -Adjustment range 4 mm

9. Dmitry Gudkov BE-RF-PM DBQ support engineering design. Longitudinal movement Spring plungers (2x) Fixing screws (2x) Pushing micrometric Screw (1x) Ball transfer units (4x) -Adjustment range 3.5 mm -Spring plungers create force against adjustment screw -Fixing screws are used to maintain the correct position of the frame Ball transfer units Z+ Y+ X+

10. Dmitry Gudkov BE-RF-PM DBQ support engineering design. Transversal movement -Adjustment range 3.5 mm -Spring plungers create force against adjustment screw -Fixing screws are used to maintain the correct position of the frame Z+ Y+ X+

11. Dmitry Gudkov BE-RF-PM DBQ support engineering design. Rotation around Z Z+ Y+ X+ -Adjustment range 3 deg -So as there is no space to place the axis in the middle, it is moved on the side of the frame -Micrometric adjustment screw is used to push the rotatable frame -Tension spring is used to pull back the rotatable frame -Screw is used to fix the correct position

12. Dmitry Gudkov BE-RF-PM DBQ support engineering design. Integration into the Test module (LAB) No conflicts detected on the position near cradle No conflicts detected on the position in the middle

13. Dmitry Gudkov BE-RF-PM Future tasks -Validation of the concept together with alignment, magnet, integration groups; -Final choice of the adjustments micrometric screws, ball transfer units and other standard components; -Optimization of the design (simplifying of the parts and assembly procedures); -Development of the supporting system for the Danfysik DBQ;