1 FRIDA Engineering Status 17/05/07 Engineering Status May 17, 2007 F.J. Fuentes InFraRed Imager and Dissector for Adaptive Optics

FRIDA Engineering StatusFRIDA Engineering Status17/05/0717/05/07 11

Engineering Status Engineering Status May 17, 2007May 17, 2007

F.J. FuentesF.J. Fuentes

InFraRed Imager and Dissector for Adaptive Optics

FRIDA Engineering StatusFRIDA Engineering Status 2217/05/0717/05/07

FRIDA: An International Project


IAC Engineering Team

M. A. Prieto Head of the IAC Group

J. Patrón IAC Project Manager

F.J. Fuentes System Engineer & Technology Transfer

J. J. Díaz Head of Control Group

P. López Control Group

F. Gago Control Group


IAC Work Packages

System Engineering Specifications & EBs Management

System Architecture

Interfaces Management

Quality Assurance

Trade-Off Studies

Engineering Models

RAM Analysis

Risk Analysis

Maintenance/Users Manuals

Configuration Control & Project

Intranet


IAC Work Packages

Tehcnology Transfer Management of Prototypes Plan

Grating Carrousel Protype

Mode Switching Mechanism Prototype

Focus Mechanism Prototype

Lens Barrel Prototype

FCTF (Frida Cold Test Facility)


IAC Work Packages

Control Software Definition of Control Packages

DAS (Data Acquisition System)

CO (Coordinated Operations)

OPMT (Observing Program Management Tools)

High Level Mechanisms Control Hard/Soft


IAC Work Packages

Detector Hawaii-II characterization

Detector Controller

Fan-out Board


FRIDA in GTC

GTC AO SYSTEM(Room Temp) FRIDA (77 K)GTC

NASMYTH

M2 corrects tip/tilt

AO system corrects higher orders. S-H WFS

Cryogenic instrument

Diffraction limited optics


Imaging Mode Concept


IFS Mode Concept


Engineering Key Points (I)

Infrared Instrument

• Cryogenics using a large cryostat (> 1 cubic meter)

• Complex optical system

• Diffraction limited (high Strehl values requested @ imaging and spectroscopy modes)

• Relatively large FOV in imaging mode (up to 41x41 arcsec)

• High throughput requested

• Integral Field Spectrograph

• An Integral Field Unit is needed (very complex all-reflective optical system @ 77K, field slicer, diffraction limited)

• Complex mechanical system

• Very high stability and repeatability of the final image on the detector is requested


Engineering Key Points (II)

• Imaging and Integral Field Spectroscopy Simultaneous Modes

• A large number of cold subsystems inside the cryostat

• Three imaging scales

• Large number of lenses and a cold mechanism to change camera barrels

• Low, medium and high spectral resolutions

• Cold grating carrousel mounting an imaging mirror and 7 gratings (~100x45 mm)

• 2 dof needed to tilt the high resolution gratings


Optical Layout (Imaging Mode)


Optical Layout (IFS Mode)


Integral Field Unit (IFU) Concept


FRIDA IFU Layout

• FOV between 0.66x0.60 arcsec and 2.64x2.40 arcsec

• 30 slice mirrors (cylindrical). 66 pixels/slice

• 30 pupil mirrors (off-axis spheres), round aperture

• 30 field mirrors (spherical), rectangular aperture

• Relay optics adapts the input scale to the slices size (~350 m)

• Total IFU amplification is x1

• IFU is nearly telecentric (pupil plane on the grating surface for all cameras)

• Design similar to FISICA (UF)


FRIDA IFU Envelope


FISICA IFU Layout

• Seeing limited

• 22 slice mirrors

• Cryogenic

• All-aluminum. Diamond turned mirrors. Self-aligned from manufacturing


FISICA IFU Layout

Slicer Mirrors


FISICA IFU Layout

Pupil and Field Mirrors


FISICA IFU Layout


Optical Bench Layout

Optical Bench Size: 1800x950 mm

Cryostat Envelope: 1950x1100 mm


Camera Wheel Layout


Grating Carrousel Wheel Layout


Focal Plane Wheel


Camera Wheel


Lens Barrel Design


Project Status (I)

Operational Concepts Documents, including the science case and the science top-level requirements, is finished

Issue 1.A of FRIDA Observing Modes is finished. Software use cases are being developed

Optical Design is finished, including a proposal of IFU configuration

IFU optomechanical design is in progress

Cryogenic tests have been made on materials for IFU mirrors other than Al 6061

FRIDA System Specifications are under internal review

The instrument Product Tree is established. All subsystems are well defined at functional and envelope levels

A preliminary proposal for the instrument architecture is established and is being analysed according the established layout requirements

Preliminary top-down error budgets are being developed


Project Status (II)

The scope and content of FRIDA subsystem specifications is being defined

A preliminary design has been established for the Focal Plane Wheel, the Camera Wheel and the Lens Barrels, based on existing LIRIS/EMIR concepts

A preliminary proposal of cryogenic cabling layout is being defined

Definition and scope of 3-D, structural, thermal and thermoelastic models is established

The following Ansys models are being developed:FRIDA steady-state thermal model (thermal power budget)Cold Bench steady-state thermal model (temp distribution)

Procurement specifications for Al 6061 are established

Material procurement and thermal treatment tests are in progress

The preliminary integration and acceptance plan at system level is being defined


FRIDA Intranet

32 registered users

218 project documents

Archived documentation includes:

Applicable documents (reference, standards and GTC documents)

Component datasheets

Document templates

Engineering models

Pictures gallery

Project documents (draft and released)


FRIDA Intranet