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07-1 MIRI Optical System CDR, 6th & 7th December 2006
Mid InfraRedInstrument
Optical SystemCritical Design Review (CDR)
TIPS Presentation:Margaret Meixner
07-2 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
MIRI CDR Process
Hybrid ESA/NASA CDR:
- Oral presentations for panel Dec 6&7 (NASA style)
- Main focus is on month long review of MIRI data packet by expert panels who write and collect RIDs
- Anyone can submit a RID for MIRI (yes that means you) by giving it to one of the panel or board members; Peter Stockman is on the board.
RIDs collected and sorted in January. Disposition of RIDS presented to the board in February This presentation provides a status of MIRI at the time of CDR.
07-3 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-4 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-5 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-6 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-7 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
Imager - Optical Requirements (Wright)
Requirements: > 2 square arcmin field of
view, with a 0.11 arcsecond pixel scale
Image Quality- > 58% of light within first
dark ring of model telescope PSF
- Strehl ratio > 85 % longward of 5.6 m
Coronagraphy in 4 filter bands (see Design Doc. for details)
R=100 Spectroscopy
Simulated NIR JWST field (Myungshin Im 1998)
1.3 arcmin
1.7 arcminDesign:
07-8 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-9 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-10 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-11 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-12 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-13 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
Medium Resolution Spectrometer - Format (Wright)
10 arcseconds
Channel 1(4.9 - 7.7 m)
Channel 2(7.4 - 11.8 m)
Channel 3(11.4 - 18.2 m)
Channel 4(17.5 - 28.8 m) Wavelength/Velocity
Each channel’s field of view is sliced, dispersed and detected.
REQUIREMENT - Integral Field Spectroscopy with > 3 arcsec field of view from 5 to 28.5 µm.
07-14 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
The MRS concept (Wells)
-4
-3
-2
-1
0
1
2
3
4
-4 -2 0 2 4Field of view across slices (arcsec)
IFU 1A
IFU 1B
IFU 2A
IFU 2B
IFU 1B
IFU 1A
IFU 2A
IFU 2B
Collimator
Collimator
Collimator
Collimator
Camera 1
Camera 2
FPA 1
FPA 2
Grating
Grating
Grating
Grating
LW dichroic
centredichroic
SW dichroic
07-15 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
500
1000
1500
2000
2500
3000
3500
4000
4 6 8 10 12 14 16 18 20 22 24 26 28 30
Requirement
Channel 1A
Channel 1B
Channel 1C
Channel 2A
Channel 2B
Channel 2C
Channel 3A
Channel 3B
Channel 3C
Channel 4A
Channel 4B
Channel 4C
MIRI MRS - Spectral Coverage (Glasse)
Wavelength [m]
Sp
ectr
al R
eso
lvin
g P
ow
er
The MRS covers the 5 to 28 micron range in 12 sub-spectra
FRD 2.5.1.2How the spectra will
appear on the MRS’s two detectors
07-16 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
MIRI MRS
FOV Name
-range microns)
FOV () sub-band name range
microns)
IFU1A
4.867.74
3.7 3.7 Short
Medium
Long
4.875.82
5.626.73
6.497.76IFU1B
7.4311.84
4.5 4.7 Short
Medium
Long
7.458.90
8.6110.28
9.9411.87
IFU2A
11.4418.20
6.1 6.2 Short
Medium
Long
11.4713.67
13.2515.80
15.3018.24
IFU2B
17.5328.75
7.7 7.7 Short
Medium
Long
17.5421.10
20.4424.72
23.8428.82
Target Acquisition required for some cases
Selection of:•Grating wheel position: 1 of 3 sub-bands•Detector readout •Exposure time•Dithering/Mapping
07-17 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-18 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-19 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-20 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-21 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-22 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-23 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-24 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-25 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
MIRI Optical System Modes
Consistent with JWSTState
Consistent with JWST/ISIM State
Consistent with JWST/ISIM State
Consistent with JWSTState
MIRI FSW/ICDH RegisterISIM powers on ICE, FPE, CCEFPGAs set-up I/Os @ Boxes a) 1553 BC/RT b) Spacewire I/F init w ICDH I/O driverSet default Power-On State (POR) - Initialize MIRI - Proceed to Eng. Mode
OFF
Safe
Operating orObservation
Standby/Engineering
Test Annealing ContaminationControl
PhotometricImaging Coronagraphy Medium Resolution
Spectroscopy
Low ResolutionSpectroscopy
Dark CurrentCalibration
OFF
MIRI Mode
Sub-mode/State
Configuration
Health-CheckMemory Dump, etc.
Specific State of Contingency Stop exposure, Reset FPE, FPE remains (minimum functionality (PDU on, SpaceWire board on, no SCEs) All Mechanisms are stopped, POM heater Off, Calibration Sources Off, Position Sensors, Cover status Unchanged
Special cases: [FPE in low power & CCE on]
........
TransitionalState
Survival
Initialize
MIRI may be turned off from any of itsoperational modes
Nominal Power Off
07-26 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-27 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-28 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-29 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
07-30 MIRI Optical System CDR, 6th & 7th December 2006This document contains proprietary information as stated on the cover page
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