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EMDM3001081 Monolithic suspension development Activity plan Piero Rapagnani Detector meeting 30-01-2008.

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Presentation on theme: "EMDM3001081 Monolithic suspension development Activity plan Piero Rapagnani Detector meeting 30-01-2008."— Presentation transcript:

1 EMDM3001081 Monolithic suspension development Activity plan Piero Rapagnani Detector meeting 30-01-2008

2 EMDM3001082 Three Parallel Tasks 1) Steel wire suspension 2) Fibre wire suspension (new C assembly procedure) 3) Complete monolithic suspension 1)Set-up preparation 2)Delivery of fused silica parts 3)Bonding tests 4)Loss tests 5)Complete monolithic suspension 1)Resistance to shocks 2)Resistance to dust pollution 3)Resistance to humidity 4)Silica Dust Containment 5)Storage 6)Transport

3 EMDM3001083 1) Steel_proto_assembly 2008 28/01 - 28/02 New RM prototype (Aluminum,ready) New MAR prototype (PVC arms, ~ready) Dummy MI (Al, black, existing, side flats to be machined,~ready) Wires 200  m (ready) Spacers (Al, to be machined) RM coils (~ready) Mounting (non standard) Assembly check and integration of new marionette and new reaction mass.

4 EMDM3001084 2) Steel_proto_LC 2008 01/03 - 30/04 LC setup (Control chain calibration, basic control tests). Remarks: - control-DAQ crate ~ready (ADC config, CCD to be tested !!!) - CD crate to be installed. Test of new marionette and new reaction meas.

5 EMDM3001085 3) Fiber_NewEarOld_preparation (Old design revised, delivered in Feb-08) 2008 11/02 - 30/04 Improved mounting tools (optimizing C-tool design). Background activities: - fibre production - fibre tests and systematics - training for EGO support Remarks: - CO 2 laser performance checked and realigned. - bending point measurement machine ready. Assembly feasibility technique preparation.

6 EMDM3001086 4) Fiber_NewEarOld_integration 2008 01/05 - 31/05 Unmount Proto_steel suspension. Assembly Dummy Mirror, new_RM, new_MAR, fibres (using specific C-tool developed). Leave 1 week in the assembly frame. Integration and transport in the LC facility. Suspension prototype integration.

7 EMDM3001087 5) Fiber_NewEarOld_LC 2008 01/06 - 31/07 TF measurements Control tests Roboustness tests. Suspension prototype Local Control test. 1 st Milestone

8 EMDM3001088 6) Fiber_NewEarNew_preparation (New design, meant to separate welding from bonding, delivered in May-08) 2008 01/02 - 31/8 Improvement of the mounting tools. Pieces delivery. Bonding (silicate/water-glass) & losses tests. Suspension parts assembly. Background activities: - fibre production - fibre tests and systematics Assembly feasibility and technique preparation.

9 EMDM3001089 7) Fiber_NewEarNew_assembly_integration 2008 01/09 - 31/10 Suspension and roboustness using the assembly frame 1Week (min) stand. assembling using the payload prototype RM, MAR Suspension in the frame 2 nd Milestone

10 EMDM30010810 8) Safety and Transport studies Mar/08 - Feb/09 Infrastructure design Orders Construction Implementation… Completion of the monolithic suspension facility, an open task: hard to delineate methods beyond “conservative and reasonable”. Call for other EGO/Virgo collaborators ????

11 EMDM30010811 9) Best_Fiber_XX_LC 2008 01/11 - 31/12 Integration of the best solution found in the LC facility 3 rd Milestone Decision about the destiny of prototype with OldEarNew suspension (if still there). Integration of the NewEarNew suspension (if 2 nd Milestone OK) in the LC facility. TF measurements. Control tests. Roboustness tests.

12 EMDM30010812 Draft of the planning

13 EMDM30010813 ITEMMOTIVATIONPERIOD 1) Steel_proto_assemblyAssembly/check/integration of new marionette and new reaction mass. 2008: 28/01-28/02 2) Steel_proto_LCTest of new MAR and new RM.2008: 01/03-30/04 3) Fiber_NewEarOld_preparation (Old design revised, delivered 02-07) Assembly feasibility and technique preparation. 2008: 11/02-30/04 4) Fiber_NewEarOld_integrationSuspension prototype integration (1 week preliminary suspension on the frame, transportation in LC facilty) 2008: 01/05-31/05 5) Fiber_NewEarOld_LCSuspension prototype dynamical and roboustness tests 2008: 01/06-31/07 6) Fiber_NewEarNew_preparation (New design, meant to separate welding from bonding, deliv. 04/07) Assembly feasibility and technique preparation. Specific bonding tests. 2008: 01/02-31/08 7) Fiber_NewEarNew_assembly/ integration Suspension prototype test in the assembly frame (1 week) 2008: 01/09-31/10 8) Safety and Transport (TBD)Completion of the MS facilityMar/08 - Feb/09 9) Best_Fiber_XX_LCAssembly and test (in vacuum?) of the best solution found 2008: 01/11-31/12

14 EMDM30010814 people Further support ? (from EGO) - more technical support from local workshop and trained for skilled works (e.g. welding) + - infrastructure and safety (already involved, but could be officially appointed) + -operator for routinary production works once (fibres/quality/systematics)

15 EMDM30010815 Present suspension critical parts Fiber handling may induce damages on their surfaces Silicate bonding is strongly stressed by the weldling Welding the fiber on the lower clamp may induce cleaning problems

16 EMDM30010816 New monolithic design FS bar Upper clamp Lower clamp

17 EMDM30010817 New monolithic design - 2 CO 2

18 EMDM30010818 New monolithic design - 3

19 EMDM30010819 Stress distribution

20 EMDM30010820 Reaction mass

21 EMDM30010821 MACHINE Measurement of FS fibres bending length

22 EMDM30010822 MACHINE MEASUREMENT OF THE BEDING POINT: Referred to the tip of the fibre at both the ends Problems during the welding operation OTHER MEASUREMENTS POSSIBLE WITH THE MACHINE First violin mode Vertical bouncing mode Measurement of FS fibres bending length Full characterization on a set of fibres pulled with the CO 2 laser NEXT: valueaccuracy Bending length36.64 mm0.04 mm Violin mode445 Hz1 Hz Bouncing mode6.1 Hz0.1 Hz with respect to the tip

23 EMDM30010823 MACHINE Measurement of FS fibres bending length

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