The INS NIRCam Team

U. Arizona NIRCam Team Members

PI: Marcia Rieke

John Stansberry

Karl MisseltDoug Kelly

Christopher WillmerKevin Flaherty Brenda FryeTIPS 4/18/2013 2/18

INS NIRCam Team Members

TIPS 4/18/2013

Elizabeth BarkerDeputy LeadETC WG Lead

Andrew ColsonRIA

Massimo RobbertoTechnical LeadCalibration WG

Jennifer LotzOperations WGEfficiency WG

Armin RestPipeline WG

Jerry KrissTeam LeadBackgrounds WG

John StansberryTBD in June

David GolimowskiI&T LeadCoronagraphs WG

3/18

NIRCam has Two Imagers in Two Modules

Long wavelength channelShort wavelength channel

Mod

ule

AM

odul

e B

Long wavelength channelShort wavelength channel

Mod

ule

AM

odul

e B

Long wavelength channelShort wavelength channel

Mod

ule

AM

odul

e B

Long wavelength channelShort wavelength channel

Mod

ule

AM

odul

e B

2.2 arcmin

2.2 arcmin

2.2 arcmin

Two adjacent fields of view (2.2 arcminute)2 Both fields in SW and LW bands Two back-to-back modules

TIPS 4/18/2013 4/18

Fields of View of JWST Instruments

0

-2

-4

2

4

0-2-4-6-8 2 4 6 8Horizontal Field Position (arcmin)

Verti

cal F

ield

Pos

ition

(arc

min

)

NIRSpec

NIRCam

MIRI

NIRISS FGS

TIPS 4/18/2013 5/18

The Near Infrared Camera

Coronagraphic masks:

2 channels in each module:

Short Wavelength(0.6-2.3 m)

Long Wavelength(2.4-5.0 m)

HgCdTe FPA Format(22) (2040

2040)

HgCdTe FPA Format1 (2040 2040)

0.032 arcsec/pixel 0.065 arcsec/pixelFOV= 2.212.21

arcmin2 FOV= 2.212.21

arcmin2

Sensitivity (10, R=4, 104 s): 1.1 m: 10.4 nJy 2.0 m: 12.1 nJy 4.4 m: 24.5 nJy

TIPS 4/18/2013

2 functionally identical (mirror image) modules

Filters provide (W R=4, M R=10, N R=100)

6/18

NIRCam Optical Layout

TIPS 4/18/2013 7/18

Assembled Modules

TIPS 4/18/2013 8/18

NIRCam Filter Wheel

TIPS 4/18/2013 9/18

NIRCam Optical Elements

TIPS 4/18/2013 10/18

NIRCam Focal Plane Arrays

TIPS 4/18/2013 11/18

MULTIACCUM Readout Mode

(“ramp”) (“ramp”)

TIPS 4/18/2013 12/18

Detector Performance

TIPS 4/18/2013 13/18

0.1

1

10

100

1000

0.5 1.5 2.5 3.5 4.5 m)

nJy

Ground (Keck/VLT) Space (HST or SPITZER) NIRCam z=5.0 z=10.1

5-sigma, 50,000 secs

NIRCam Sensitivity Comparison

microns Galaxy models:

HST

SSTGround

JWST NIRCam

TIPS 4/18/2013 14/18

NIRCam Coronagraph - 1

TIPS 4/18/2013 15/18

NIRCam Coronagraph - 2

TIPS 4/18/2013 16/18

NIRCam’s Wavefront Sensing Role

NIRCam provides the imaging data needed for wavefront sensing.

Dispersed Hartmann Sensors at 0° and 60° orientations permit phasing of adjacent mirror elements.

Two grisms on the long wavelength channel provide an alternative to the Dispersed Hartmann Sensor (DHS).

Coarse phasing w/DHS

After coarse phasing Fully aligned

Fine phasing

First Light

After segment capture

DHS at pupil Spectra recorded by NIRCam

TIPS 4/18/2013 17/18

NIRCam Status

Cryovac 3 successfully finished April 11. Instrument currently in bake out to meet contamination requirements.

ICE rebuilding underway. EMI testing is next. Shipment to GSFC expected at end of May. Acoustic and vibe testing (at APL?) in June. ICE boxes arrive late August. FPE delivered in September. Acceptance review at GSFC in October. New SW FPAs are in house at UofA, and they look beautiful.

Expect to prepare these and place in NIRCam before ISIM CV2.

New LW FPAs ready at Teledyne. Hope to prepare these too.

TIPS 4/18/2013 18/18