The INS NIRCam Team
U. Arizona NIRCam Team Members
PI: Marcia Rieke
Doug Kelly
Karl Misselt
John Stansberry
Kevin Flaherty
TIPS 4/18/2013
Brenda Frye
Christopher Willmer
2/18
INS NIRCam Team Members
Elizabeth Barker
Deputy Lead
ETC WG Lead
Andrew Colson
RIA
Jennifer Lotz
Operations WG
Efficiency WG
Armin Rest
Pipeline WG
TIPS 4/18/2013
David Golimowski Jerry Kriss
Team Lead
I&T Lead
Coronagraphs WG Backgrounds WG
Massimo Robberto
Technical Lead
Calibration WG
John Stansberry
TBD in June
3/18
NIRCam has Two Imagers in Two Modules
2.2 arcmin
Module B
Module A
Short wavelength channel
Long wavelength channel
2.2 arcmin
2.2 arcmin
Two adjacent fields of view (2.2 arcminute)2
Both fields in SW and LW bands
TIPS 4/18/2013
Two back-to-back modules
4/18
Vertical Field Position (arcmin)
Fields of View of JWST Instruments
4
NIRISS
FGS
2
0
-2
NIRCam
NIRSpec
MIRI
-4
-8
TIPS 4/18/2013
-6
-4
-2
0
2
4
Horizontal Field Position (arcmin)
6
8
5/18
The Near Infrared Camera
 2 functionally identical (mirror image) modules
 2 channels in each
module:
Short Wavelength
(0.6-2.3 m)
Long Wavelength
(2.4-5.0 m)
HgCdTe FPA Format
(22)  (2040  2040)
HgCdTe FPA Format
1  (2040  2040)
0.032 arcsec/pixel
0.065 arcsec/pixel
FOV= 2.212.21
arcmin2
FOV= 2.212.21
arcmin2
 Filters provide (W  R=4, M  R=10, N R=100)
 Sensitivity (10, R=4, 104 s):



TIPS 4/18/2013
1.1 m: 10.4 nJy
2.0 m: 12.1 nJy
4.4 m: 24.5 nJy
 Coronagraphic masks:
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”)
TIPS 4/18/2013
(“ramp”)
12/18
Detector Performance
TIPS 4/18/2013
13/18
NIRCam Sensitivity Comparison
1000
Ground
nJy
100
SST
HST
10
JWST NIRCam
1
0.1
0.5
1.5
5-sigma, 50,000 secs
Ground (Keck/VLT)
TIPS 4/18/2013
2.5
3.5
Galaxy models:
(m
m)
microns
Space (HST or SPITZER)
4.5
NIRCam
z=5.0
z=10.1
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
First Light


After
segment
capture
Coarse
phasing
w/DHS

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).
Spectra recorded
by NIRCam
DHS at pupil
Fine phasing
After coarse phasing
TIPS 4/18/2013
Fully aligned
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