NIRCam
News
January 29, 2007
Previous
editions are available in the archive.
Tuesday Telecon
Dial-in: 877-951-3250, Passcode 108321
|
Date |
Meeting Agenda |
GSFC Location |
|
Tuesday, Jan 30 16:00 EST |
NIRCam MICD EO8 Review |
Bld 22, room C365 |
|
Tuesday, Feb 6 16:00 EST |
Mechanism Micro-dynamics
Measurement |
Bld 22, room
C399 |
Announcements
Stay
tuned for an agenda for the February NIRCam Long-Lead GSE Review. See changed date below.
NIRCam Calendar
|
Date |
Event |
Details |
|
1/29/07 Time: 2 pm EST |
NIRCam Monthly |
GSFC, Bld 22 Rm 399, video |
|
Jan 30-31, 2007 |
JWST T-NAR |
GSFC |
|
Feb 8, 2007 |
FOV Discussion |
Ball, Boulder Co |
|
Feb 20, 2007 |
NIRCam Long-Lead GSE Review |
|
|
Feb 22, 2007 |
NIRCam Monthly |
|
|
Feb 27-March 1, 2007 |
Fault Mgmt/ Ops / FSW |
GSFC |
|
Mar 22, 2007 |
NIRCam Monthly |
|
|
Mar 28-29, 2007 |
Optics |
|
|
Apr 26, 2007 |
NIRCam Monthly |
|
|
May 22, 2007 |
NIRCam Monthly |
|
|
May 29, 2007 |
NIRCam GSE CDR |
|
|
June 11-14, 2007 |
JWST Workshop |
|
Accomplishments
of Week Ending 1/23/07
1) An ETU LiF lens was successfully
mounted and mesaured at
room temperature where the applied
streses will be highest. The
transmitted WFE was 14nm, well below the budget of 25nm.
2) Discussed issues in producing an
FPE simulator, and a
high fidelity software simulator may be
problematic for the
NIRCam Team to
produce.
3) Manufacturing of PIL prototype
lenses is proceeding with one
side of lenses polished and the second
side in process.
4) Two more cable assemblies are in
thermal cycle testing.
NIRCam Needs (from Dec 19 MSR)
|
Need |
Date Assigned |
Assigned to |
ECD |
Status |
|
Need PSD information and details of mirror segments for higher
fidelity coronagraphic modeling |
8/31/2006 |
Mark Clampin |
12/1/2006 |
Ritva to provide delivery date, discuss at Optical Summit meeting on March 28 and 29 |
|
Changes to SIIP/Strut pad dimensions |
10/31/2006 |
John Crow |
|
Issue resolved – ICD change in work |
|
Any changes to PAR? |
10/31/2006 |
Pam Davila |
|
work between B. Bos and S. Somerstein ongoing. |
|
Harness and thermal strap loads on bench & struts |
8/31/2006 |
John Crow |
|
in process. Need FPE xsect info |
|
ISIM CCDH FSW Rev 6.0 installed on SIDU including Spacewire
interface and function call for ASIC micro-codes |
8/31/2006 |
Mark Voyton |
|
Not until Jan 2007. Scott
Lambros to discuss with Pam S. |
|
Resolution of Rogue Path |
8/31/2006 |
Pam Davila |
|
Optical |
|
Resolve open TBXs in IRD & ISIM Reqs Doc |
8/31/2006 |
Julie |
|
See RTC list below |
|
Resolve open RTCs in IRD, ISIM Reqts, ICD |
8/31/2006 |
Julie |
|
See RTC list below |
|
Define intermediate thermal stationing of harnesses |
9/26/2006 |
Ray L |
2/13/07 |
Need to schedule meeting to discuss thermal budget of ICE
harnesses. |
|
Clarify workmanship vibe levels |
9/26/2006 |
John Crow |
|
complete |
|
ISIM analysis of NIRCam EOL contamination levels |
10/31/2006 |
Ray Levesque |
Provide schedule by 1/31/07 |
Need to set up meeting to discuss Model. |
|
Envelope Notch for ETU cones of light |
10/31/2006 |
John Crow |
Review EO8 on 1/16/07 |
notch identified – MICD change in process |
|
KM Strut Design |
10/31/2006 |
John Crow |
|
need allowable forces/moments from NIRCam
team. |
ISIM Needs
|
Need |
Date Assigned |
Assigned to |
ECD |
Status |
|
KM Strut Design |
|
|
1/16/07 |
Need completed KM Requirements Document. John Johnston to send NIRCam predicted pad
locations from ISIM PDR. NIRCam to
complete stiffness sensitivity analysis. |
|
ICD update to ICE cables section |
12/25/06 |
John McCloskey |
2/9/07 |
In Process, Next meeting on Feb 6th. |
|
FPE cable cross section dimensions for routing work |
|
|
2/6/07 |
Tony to send xsect dimensions of both cables under
consideration. |
|
Input into EOL contamination analysis |
|
|
TBD |
Need to set up meeting to discuss modeling needs |
|
Test plan for Pathfinder Singlet test and Pathfinder
triplet-beamsplitter-triplet test. |
|
|
TBD |
Received Singlet test plan.
Pathfinder test plan pending completion. |
|
ROM for FPE Software Simulator |
|
|
1/31/07 |
Scott L. to talk with Marcia |
|
SITS to SWTS2 upgrade |
|
|
1/31/07 |
Set up meeting to discuss needs |
|
Provide Data on Passive Friction Device Test. |
|
|
1/30/07 |
ISIM would like to review ASAP. |
|
EM on Lens mount DU tests |
|
|
|
ISIM would like this documented and available for review. |
Review RFAs (updated 1/26/07)
|
CDR RFA |
Requester |
Action Requested |
Assignee |
Status |
ECD |
|
OBA RFA-3 |
John
Johnston |
Peel
& shear test, analysis of bonded joints. |
Alison
Nordt |
Alison
preparing response to John's review questions. |
Aug-06 |
|
OBA RFA-4 |
John
Johnston |
Assess MS
with FS = 1.5. |
Alison
Nordt |
Alison
preparing response to John's review questions. |
Aug-06 |
|
OBA RFA-8 |
Richard
Vassar |
SE to do
independent tolerance analysis |
Kevin
Bock |
Kevin
auditing NIR-EM-0152A. Kurli analyzed
optic sensitivity. |
Dec-06 |
|
SLB RFA-3 |
Pam
Davila |
Worst
case clearance analysis. |
Brent
Biggs |
Complete
clearance analysis, document and present. |
Sep-06 |
|
SLB RFA-5 |
Pam
Davila |
STOP
analysis results, clearances. |
Brent
Biggs |
Complete
OTM analysis, document and present. |
Sep-06 |
|
FPA RFA-3 |
Don Hall |
Shielding
temp sensor/heater cable. |
Erick
Young |
Build a simplified SPICE model of the cable assembly to assess
the coupling between the thermometer/heater leads and the FPA cable inside
the housing. |
Jul-06 |
|
I&T-II
RFA-4 |
Bill
Eichorn |
Correlate
warm-to-cold models. |
Paul
Schweiger |
Bill
additional request for description of Pathfinder test. |
tbd |
|
I&T-II
RFA-6 |
Bill
Eichorn |
Misalignments
in fwd and reverse directions. |
Paul
Schweiger |
Bill
requested analysis using wavefront optimization. |
tbd |
|
I&T-II
RFA-10 |
John
Hagopian |
WFE of
ambient optics. Null lenses. |
Paul
Schweiger |
John
wants ambient WFE w/ null lenses in our Plan. |
Jan-07 |
|
I&T-II
RFA-11 |
John
Hagopian |
Define
alignment budget items. |
Paul
Schweiger |
John
wants to see the completed analysis. |
Jan-07 |
|
I&T-II
RFA-14 |
John
Hagopian |
Include
figure uncertainty in alignment. |
Paul
Schweiger |
John
wants to see the completed analysis. |
Jan-07 |
|
I&T-II
RFA-15 |
John
Hagopian |
VIRATAC
on each optical element. |
Paul
Schweiger |
John
wants to see the completed analysis. |
Jan-07 |
|
SYS RFA-4 |
Pam
Davila |
Cold
triplet & DBS interferometer tests. |
Roger
Potash |
DBS done;
awaiting triplet test. |
1-Feb-07 |
|
SYS RFA-7 |
Steve
Graham |
Tiodize baffle internal surfaces v Z306. |
Roger
Potash |
Awaiting
Steve’s approval of re-submitted response.
(Submitted 1/29/07) |
7-Jan-07 |
|
SYS
RFA-13 |
Tom
McCarthy |
Why not 4
TV cycles? Margins? |
Roger
Potash |
Awaiting
Tom's approval of re-submitted response. (submitted 1/4/07) |
tbd |
|
SYS RFA-15 |
Gene
Gochar |
Plan to
deliver Flight ready optics |
Todd
Kvamme |
Awaiting
Gene's approval of submitted response. (submitted 1/10/07) |
tbd |
|
SYS
RFA-22 |
Eugene
Waluschka |
Measure
S&P R/T for optic surfaces. |
Yalan Mao |
Yalan to
conduct a ray trace analysis. |
tbd |
Document Status
|
DRD |
Title |
Status |
Due |
Comments |
|
SA-02 |
Contamination Control Plan |
Returned for changes |
9/8/2006 |
See JWST-MEMO-6835 |
|
SE-04 |
Verification Plan |
Disapproved |
11/8/2006 |
See JWST-MEMO-6957 |
|
SE-10 |
Math Models |
Returned with comments |
11/8/2006 |
See JWST-MEMO-7015 regarding mechanical models only |
|
IT-01 |
I&T Plan |
Delivered |
ETU I&T |
|
|
FSW-01 |
FSW Product Plan |
needs update |
|
See JWST-MEMO-4063 |
|
FSW-02 |
FSW Vision Doc |
needs update |
|
See-JWST-MEMO-4210 |
|
FSW-03 |
FSW Reqts Spec |
returned w/ comments |
1/9/2007 |
|
|
OPS-11 |
Ops Concept |
needs update |
|
See JWST-MEMO-4518 |
|
PM-01 |
Proj Mgmt Plan |
approved |
|
|
|
SI-09 |
K-Mounts Reqts |
returned w/comments |
12/31/2006 |
KM redesign pending new
requirements. NIRCam must respond to
Memo on this document before the RD becomes official |
|
SE-01 |
Sys Engr Plan |
approved |
|
|
Pending Changes (updated 1/12/07)
|
Mod |
CCR # |
RTC# |
Description |
Cost |
Status |
Due |
Comments |
|
tbd |
|
|
Wave 6 Cost Changes |
yes |
Tech Eval |
|
|
|
|
543 |
|
NIRCam SOW Rev F |
yes |
Complete |
|
|
|
tbd |
|
|
Wave 7 Changes |
|
|
|
|
|
|
593 |
|
ETU Spec |
|
Complete |
|
|
|
|
|
|
IRD Rev G (Final Rev for ETU) |
yes |
CCR |
|
|
|
|
676 |
34J |
Outgassing Rate |
|
CCR |
1/15/07 |
|
|
|
676 |
56G |
Electrical Changes |
|
CCR |
1/15/07 |
|
|
|
676 |
66A |
Grounding |
|
CCR |
1/15/07 |
|
|
|
676 |
68C |
ICE Sync Changes |
|
CCR |
1/15/07 |
|
|
|
676 |
70B |
ICP A |
|
CCR |
1/15/07 |
|
|
|
676 |
71H |
Struts |
|
CCR |
1/15/07 |
|
|
|
676 |
73A |
Telemetry Rate TBRs |
|
CCR |
1/15/07 |
|
|
|
676 |
74D |
MIPS |
|
CCR |
1/15/07 |
|
|
|
676 |
76B |
FSW Data Rate |
|
CCR |
1/15/07 |
|
|
|
676 |
78D |
Longwave Grism |
|
CCR |
1/15/07 |
|
|
|
676 |
79E |
FSW Changes |
|
CCR |
1/15/07 |
Revision to be submitted to existing CCR |
|
|
676 |
81C |
Static Envelope |
|
CCR |
1/15/07 |
|
|
|
676 |
82B |
Fuse Blow Transient |
|
CCR |
1/15/07 |
|
|
|
676 |
87B |
Post CDR Thermal Updates 2 |
|
CCR |
1/15/07 |
|
|
|
676 |
88A |
WFS-DHS Positioning |
|
CCR |
1/15/07 |
|
|
|
676 |
89D |
EMC |
|
CCR |
1/15/07 |
|
|
|
676 |
90A |
Harness Update |
|
CCR |
1/15/07 |
|
|
|
676 |
91A |
Surface Cleanliness |
|
CCR |
1/15/07 |
|
|
|
676 |
92C |
LVDS Signals |
|
CCR |
1/15/07 |
|
|
|
676 |
93A |
Voltage Ripple |
|
CCR |
1/15/07 |
|
|
|
676 |
94B |
WFS Filters |
|
CCR |
1/15/07 |
|
|
|
676 |
096A |
Misc Updates |
|
CCR |
1/15/07 |
|
|
|
676 |
097A |
ICE Box Envelope |
|
CCR Comment/walk-on RTC |
1/15/07 |
|
|
|
|
|
Wave 8 Changes |
|
|
|
|
|
|
|
|
IRD Rev H |
|
|
|
|
|
|
|
65A |
FOV Changes |
|
|
|
Discuss Optical |
|
|
|
67B |
Alignment Changes |
|
|
|
Pending NIRCam response and KM analysis. |
NIRCam Risks (updated with 12/19/06 MSR)
|
Number |
Title |
Impact |
Likelihood |
Rating |
|
NIRCam ISIM-Level Risks |
|
|
|
|
|
NIRCam-32 |
NIRCam Lens Mounts |
C |
A |
Low |
|
NIRCam-138 |
NIRCam Wavefront Error (low/mid/high sf) |
D |
B |
Medium |
|
NIRCam-143 |
NIRCam Optical Transmission |
C |
B |
Low |
|
NIRCam-191 |
NIRCam Detector BCS Failures |
C |
A |
Low |
|
NIRCam-250 |
NIRCam Region 1 Heat Transfer |
B |
C |
Medium |
|
NIRCam-251 |
NIRCam Optical Alignment |
C |
B |
Low |
|
NIRCam -280 |
Extra Module-level cryotest with FPAs integrated |
|
|
|
|
NIRCam-Level Risks |
|
|
|
|
|
28 |
OBA Damage |
D |
C |
Medium |
|
15 |
SCA Delivery Impacts I&T Schedule |
D |
B |
Medium |
|
4 |
Region 1 Heat Transfer |
D |
C |
Medium |
|
34 |
FPE to ASIC Harness Design |
D |
A |
Low |
|
45 |
WFE due to Bench Distortion |
C |
C |
Medium |
|
80 |
Optical Throughput due to Contamination |
C |
D |
Medium |
|
33 |
I&T GSE Design and Fab not in time for I&T |
C |
C |
Medium |
|
35 |
Optical Triplets and DBS Mount Distortion |
C |
C |
Medium |
|
8 |
FPE Parts Qualification |
C |
C |
Medium |
|
78 |
WFE Degradation due to I&T tolerance exceedance |
C |
C |
Medium |
|
79 |
Optical throughput loss due to coatings |
C |
C |
Medium |
|
16 |
Sensitivity loss due to FPA/ASIC/FPE/cable noise |
C |
C |
Medium |
|
Acronym List |
|
|
ASIC |
Application-Specific Integrated Circuit |
|
ASMIF |
Ambient Science Instrument Mechanical Interface Fixture |
|
BCS |
Balance Composite Structure |
|
CCDH |
Common Command & Data Handling |
|
CMLB |
Ceramic Multi-Layer Board |
|
CPT |
Comprehensive Performance Test |
|
DBS |
Dichroic Beam Splitter |
|
DHS |
Dispersed Hartmann Sensor |
|
EEE |
Electrical, Electronic, and Electromechanical (Parts) |
|
EOL |
End-of-life |
|
ETU |
Engineering Test Unit |
|
FOV |
Field of View |
|
FPA |
Focal Plane Assembly |
|
FPE |
Focal Plane Electronics |
|
FSW |
Flight Software |
|
GSFC |
|
|
GSE |
Ground Support Equipment |
|
I&T |
Integration & Test |
|
ICD |
Interface Control Document |
|
ICE |
Instrument Control Electronics |
|
ICP |
Interconnect Panel |
|
IRD |
Interface Requirements Document |
|
IOS |
ISIM-to-OTE-and-Spacecraft |
|
ISIM |
Integrated Science Instrument Module |
|
KM |
Kinematic Mount |
|
MIPS |
Million Instructions Per Second |
|
MRR |
Manufacturing Readiness Review |
|
NGIN |
Next Generation Integrated Network |
|
OA |
Optics Assembly |
|
OBA |
Optical Bench Assy |
|
OOB |
Out of Band |
|
OTE |
Optical Telescope Element |
|
PAR |
Pupil Alignment Reference |
|
PDR |
Preliminary Design Review |
|
PFD |
Passive Friction Device |
|
PIL |
Pupil Imaging Lens |
|
PSD |
Power Spectral Density |
|
RFA |
Request for Action |
|
RTC |
Request for Technical Coordination |
|
Rx |
Prescription |
|
SCA |
Sensor Chip Assembly |
|
SOW |
Statement of Work |
|
STOP |
Structural, Thermal, Optical (Analysis) |
|
SWG |
Science Working Group |
|
TBR |
To Be Reviewed |
|
TIMs |
Technical Interchange Meeting |
|
T-NAR |
Technology Non-Advocate Review |
|
TV |
Thermal Vacuum |
|
UPS |
Uninterruptible Power Supply |
|
WFE |
Wavefront Error |
|
WFS |
Wavefront Sensing |