Technology Developments for ESO at the IAC

Transcription

1 Jornada ESO 2011, Granada, 10-11/02/2011 Technology Developments for ESO at the IAC Head of Technology Division 1

2 Technology involvement in ESO Instruments: Espresso for the VLT CODEX and HARMONI for the E-ELT Technology development for the E-ELT E-ELT construction preparation Final design of the E-ELT 2 2

3 ESPRESSO at the VLT High Resolution Ultra Stable Optical Spectrograph for the VLT Optical bench The work packages of the IAC within the consortium are: Fiber link Hardware System engineering assistance Optics procurement and MAIV Spectrometer Optomechanics, optical bench System integration and verification Vacuum vessel 3 3

4 CODEX: COsmic Dynamics Experiment for the E-ELT Radial velocity accuracy: 2 cm/s over 30 years Wavelength calibration system: highly stable laser comb Fiber scrambling: object and calibration Synergy and experience with ESPRESSO: the CODEX precursor at the VLT 4 4

5 HARMONI Optics Design of the scale exchanger and K- mirror (optic de-rotator) Analysis of sensitivity and scattered light Opto-mechanics Design of different cryogenic mechanisms: filters, stops and shutter Design of mountings for all the optics Electric and electronic interfaces 5 5

6 European Extremely Large Telescope (E-ELT) UE FP6 contract led by ESO ( ). 27 participants (28 M ). IAC coordinated the Spanish participation (4.5 M ). Objective: Design studies to validate concepts and technologies for the E-ELT APE WEB Site characterization Dome and infrastructure 6 6

7 Active Phasing Experiment (APE) Objective: developing and testing four different technologies for co-phasing of segmented mirrors, and control methods Participants: ESO, IAC, INAF, LAM, FOGALE, GRANTECAN First instrument with Spanish participation installed on one VLT UT IAC responsible for one of the co-phasing sensors (DIPSI) and co-responsible of the other one (ZEUS) Results on sky with the UT-3 at Paranal Co-phasing of a 61 segments mirror with an stable rms error of 7 nm Co-phasing under bad-seeing conditions (1.8 ) and faint stars (m=14.5) Range of piston errors recovery of the segments down to 1.5 microns 7 7

8 Active Phasing Experiment (APE) 8 8

9 Wind Evaluation Breadboard (WEB) Objective: telescope and primary mirror simulator for testing segment control under real wind situations Participants: IAC, JUPASA, ALTRAN, ESO, GRANTECAN Results on sky (operating at Teide Observatory) Segments control under 100 nm rms Suggestions to improve the mechanical design of segments Validation of soft actuators Architecture for control software 9 9

10 Wind Evaluation Breadboard (WEB) First mode = Hz 10 First (tip) eigenmode at 62.9 Hz 10 10

11 Wind Evaluation Breadboard (WEB)

12 Dome Conceptual Design Objective: the development of two dome concepts at conceptual level Participants: IAC, ESO, CIMNE, ITER, GRANTECAN Phase 1: Four concepts 12 12

13 Dome Conceptual Design Selection and development of two conceptual designs Polygonal dome and spherical dome - Preparation of technical specs and contracts developments - One of the selected companies got the phase- A contract with ESO 13 13

14 Dome s wind studies Objectives: Characterization of wind pressures on the building, the telescope and the optics, using both numerical models and a wind tunnel. Participants: IAC, CIMNE, ITER 14 14

15 Dome s wind studies Telescope model Dome 30º incidence angle: pressure and velocity field Tunnel test of boundary layer 15 15

16 Adaptive optics developments Objectives: To develop an AO re-constructor based on FTR To evaluate hardware platforms on real time for AO based on FPGAs Participants: ESO, IAC, CRAL, ARCETRI, ONERA, PADOVA Results: Use of the FTR re-constructor at the ESO AO simulator Comparison of the FTR solution with other simulators: Computation needs drastically reduced Able to work with fainter reference stars More robust again errors between the wavefront sensor and the deformable mirror 16 16

17 Adaptive optics developments 17 17

18 Site characterization Objectives: To establish the candidate sites for the E-ELT To define the parameter space for turbulence, meteorology and geology Design and development of instruments to measure those parameters in a standard way: MASS-DIMM and Generalized SCIDAR Routine observing campaigns in the different sites and analysis of the results Participants: University of Niza, IAC, ESO, UPC 18 18

19 Site characterization 19 19

20 E-ELT construction preparation Contract with the UE under the FP7, led by ESO. Participation of the IAC in several work packages ( ) WP05000: Science Access Task 4: Observing conditions prediction tools WP06000: Networks of Nodes of Expertise Network 1: Advanced Cryogenic Techniques for ELT Observatory Network 3: Ultra-accurate Wavelength Calibration Techniques of Cosmic Sources Spectra WP09000: Upgrade paths WP09200: Large detector cryostat of high thermal stability 20 20

21 Ultra-stable cryostat 21 21

22 Final design of the E-ELT Participation of the IAC in several contracts with ESO for the final design Phase A: preliminary design Primary Mirror Cell. Prime contractor: CESA. GRANTECAN and IAC subcontracted. Phase B: detailed design and prototype fabrication Position Actuators design for the primary mirror segments. Prime contractor: CESA. IAC and GRANTECAN subcontracted

23 Position actuators -3D and test bench -Motion error: less than 10 nm rms PACT control electronics 90 Kg mass Test PC PACT PC - Data acquisition Isolated optical bench Laptop - Data processin g 23 23

24 Thanks! 24 24