NIRCam
News
January 22, 2007
Previous
editions are available in the archive.
Tuesday Telecon
Dial-in: 877-951-3250, Passcode 108321
|
Date |
Meeting Agenda |
GSFC Location |
|
Tuesday, Jan 23 16:00 EST |
Electrical RTCs to ICD
NIRCam MICD EO8 Review |
Bld 22, room
C399 |
|
Thursday, Jan 25 11:00 EST |
KM structural analysis approach |
Bld 22, room 398 |
|
Tuesday, Jan 30 16:00 EST |
Mechanism Micro-dynamics
Measurement and NIRCam MICD EO8 Review |
Bld 22, room C365 |
|
Tuesday, Feb 7 16:00 EST |
TBD |
Bld 22, room
C399 |
Announcements
Stay
tuned for an agenda for the February NIRCam Long-Lead GSE Review.
NIRCam Calendar
|
Date |
Event |
Details |
|
1/29/07 Time: 2 pm EST |
NIRCam Monthly |
GSFC, Bld 22 Rm 399 |
|
Jan 30-31, 2007 |
JWST T-NAR |
GSFC |
|
Feb 8, 2007 |
FOV Discussion |
Ball, Boulder Co |
|
Feb 15, 2007 |
NIRCam Long-Lead GSE Review |
|
|
Feb 22, 2007 |
NIRCam Monthly |
|
|
Feb 28-30, 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 1/16/07
1) Singlet lens mounting issue is
almost completely resolved. A
Test Readiness Review was held which
covered the modified mount
and procedure (0.5mm gap at bottom of
mount was removed, order
of tightnening bolts revised, and a
different torque wrench has
been selected) with intent of proceeding
with mounting and testing
this week.
2) Analysis of data on the passive
friction device shows no
torque increase between room temperature
and cryo. Position
repeatability test will be performed in early
Feb.
3) Filter wheel assembly was the
subject of an internal review
and the revised design now passes both
the 1st freq spec and the
design limit loads on the mounting
flexures.
4) Closure has not been reached with
Barr on how to measure the
transmitted wavefront error and telecons are
being held every day to
resolve this issue.
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 |
Pending further inputs from NIRCam. JVC has tentative schedule. |
|
Envelope Notch for ETU cones of light |
10/31/2006 |
John Crow |
Review EO8 on 1/16/07 |
notch identified – need ICD change |
|
KM Strut Design |
10/31/2006 |
John Crow |
|
need allowable forces/moments from NIRCam
team. NIRCam needs schedule in Project
format. |
ISIM Needs
|
Need |
Date Assigned |
Assigned to |
ECD |
Status |
|
KM Strut Design |
|
|
1/16/07 |
Need completed KM Requirements Document ,
Scott to talk to J. Crow and J. Johnston on Design Methology. |
|
Step file of FPE ICP on bench |
|
|
|
Closed |
|
Step file of ICE box (to add this to the MICD) |
|
|
|
Closed |
|
ICD update to ICE cables section |
12/25/06 |
Shaune Allen |
1/23/07 |
In Process, Next meeting on Jan 23. |
|
FPE cable cross section dimensions for routing work |
|
|
1/23/07 |
Tony to send xsect dimensions of both cables under
consideration. |
|
Input into EOL contamination analysis |
|
|
|
To be defined by Ray LeVesque |
|
Test plan for Pathfinder Singlet test and Pathfinder
triplet-beamsplitter-triplet test. |
|
|
1/16/07 |
GSFC would like to review the test plan for the Singlet and for
the pathfinder test prior to the tests.
Scott will make these plans |
|
ROM for FPE Software Simulator |
|
|
1/31/07 |
Scott L. to talk with Marcia |
|
SITS to SWTS2 upgrade |
|
|
1/31/07 |
Scott L. to discuss with Pam. |
|
Step file of ICE Box |
|
|
1/23/07 |
NIRCam to provide for use in IEC model. |
|
Provide Data on Passive Friction Device Test. |
|
|
1/23/07 |
ISIM would like to review. |
Review RFAs (updated 1/19/07)
|
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-5 |
Bill
Eichorn |
Add test
w/ SMART after FPA installed at Module. |
Paul
Schweiger |
Awaiting
Bill's approval of submitted response. (submitted 1/17/07) |
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-7 |
Bill
Eichorn |
Provide
alignment details. |
Paul
Schweiger |
Awaiting
Bill's approval of submitted response. (submitted 1/10/07) |
tbd |
|
I&T-II
RFA-8 |
Bill
Eichorn |
Cold
window transmission at 300 K. |
Liz
Osborne |
Awaiting
Bill's approval of submitted response. (Submitted 12/13/06) |
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 |
Pending
Brent's baffle test. 11/16 Describe
cryo test; clarify vibe & acoustic testing. |
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-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 |