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NIRCam News
March 12, 2007
Previous editions are available in the archive.

 

 

Tuesday Telecon

Dial-in: 877-951-3250, Passcode 108321

Date

Meeting Agenda

GSFC Location

Tuesday, Mar 13

16:00 EDT

NIRCam MICD EO8

Bld 22, room C399

 

 

 

 

Other meetings to note next week:

Tuesday, Mar 13 at 2 pm EDT:  Filter Measurements

Thursday, Mar 15 at 11 am EDT: ISM/OTE telecon topic is NIRCam FOV and Coronagraph vignetting.

Thursday, Mar 15 at 1:30 pm EDT: NIRCam IRD CCB

Thursday, Mar 15 at 2 pm EDT: NIRCam GSE Harnesses

Friday, Mar 16 TBD: NIRCam KM Requirements

 

Announcements

 

 A new bench incident at AxSys is currently under investigation.

 

NIRCam Calendar

Date

Event

Details

Mar 20, 2007

NIRCam Monthly

Palo Alto

Mar 28-29, 2007

Optics Summit

Greenbelt, NGST ECO

Apr 26, 2007

NIRCam Monthly

Palo Alto

May 22, 2007

NIRCam Monthly

Palo Alto

May 29, 2007

NIRCam GSE CDR

Palo Alto

June 11-14, 2007

JWST Workshop

Dublin, Ireland

 

 

Accomplishments of Week Ending 3/6/07

1) Shipped more cable assemblies to Teledyne.

2) Outer clean room surrounding chamber to be used in pathfinder testing is now ready, and the new port required in the vaccum chamber is being installed.

3) Received ETU heaters which were procured using the thermal model assuming heat switches.

4) Held MRRs for AR coatings and the DBS which resulted in JDSU being given the go-ahead for ETU production.

5) Barr has been given the go-ahead to produce ETU filters.

6) The MRR on PIL revealed an apparent problem with the center of curvature on some lenses. It is suspected that this a measurement problem, and is being investigated.

 

 

NIRCam Needs (from Feb 22 MSR)

         Need PSD information and details of mirror segments for higher fidelity coronagraphic modeling

         Harness and thermal strap loads on bench and struts – needed confirm load on OBA to finalized structural analysis, to complete strut design, and perform OTM analysis on the OA to determine impact on alignment and WFE

         Resolution of intermediate thermal strapping of harnesses

         ISIM Analysis of NIRCam EOL Optics Contamination

         Resolve FPE simulator requirements

         Strut design

Ø      LM needs to finish strut analysis for requirement determination. Performed for static, Need to coordinate pad motion cases for final assessment

Ø      Need updated design for updated OTM analysis

         Resolution of Rogue Path

         Update NIRCam MICD

Ø      ETU test cone of light keep-out zone in module A FAM mass simulator

Ø      Increase volume allocation to accommodate FAM covers

Ø      Resolve descrepencey from EO5 on strut pad to SIIP interface

Ø      Definition of harness interface to NIRCam struts

         Update DMGSR for GSE harnesses

         NIRCam FSW needs IFSW Version 6 upgrade for ASIC Micro-code load.  Our rev A plan has been showing Feb 1st, Expect NIRCam FSW 1st build delivery to be impacted

         Resolve 7 open TBXs in NIRCam IRD –INCU-1682 & INCU-1783

         Resolve open RTCs

         GSFC approval of submitted RFA Responses

 

 

ISIM Needs

Need

Date Assigned

Assigned to

ECD

Status

KM Strut Design

 

Scott Horner

 

Need completed KM Requirements Document.    NIRCam to complete stiffness sensitivity analysis.  Providing updated schedule assuming requirements complete by Feb 9th.

ICD update to ICE cables section

12/25/06

John McCloskey, Malcolm Ferry

3/6/07

In Process.  Need info from NIRCam ICE and FPE

Input into EOL contamination analysis

 

Ray LeVesque

4/1/07

Need to set up meeting to discuss modeling needs

Test plan for Pathfinder Singlet test and Pathfinder triplet-beamsplitter-triplet test.

 

Leigh Ann Rider

TBD

Received Singlet test plan.  Pathfinder test plan pending completion.

ROM for FPE Software Simulator

 

 

3/2/2007

 Pending requirement definition from Art Ferrer.

Provide Data on Passive Friction Device Test.

 

Todd Kvamme

1/30/07

ISIM would like to review ASAP.

EM on Lens mount DU tests

 

 

TBD

ISIM would like this documented and available for review.

ROM on mech disturbance

 

 

TBD

Per Rajeev

 

 

Review RFAs (updated 3/5/07)

CDR RFA

Requester

Action Requested

Assignee

Status

OBA RFA-3

John Johnston

Peel & shear test, analysis of bonded joints.

Alison Nordt

Awaiting John's apporval of follow-up responses.

OBA RFA-4

John Johnston

Assess MS with FS = 1.5.

Alison Nordt

Awaiting John's apporval of follow-up responses.

SLB RFA-3

Pam Davila

Worst case clearance analysis.

Brent Biggs

Complete clearance analysis, document and present.

SLB RFA-5

Pam Davila

STOP analysis results, clearances.

Brent Biggs

Complete OTM analysis, document and present.

FPA RFA-3

Don Hall

Shielding temp sensor/heater cable.

Erick Young

Scott to review Erick's report.  Submitted to Don for approval.

I&T-II RFA-4

Bill Eichorn

Correlate warm-to-cold models.

Paul Schweiger

Bill additional request for description of Pathfinder test. Draft plan in review.

I&T-II RFA-6

Bill Eichorn

Misalignments in fwd and reverse directions.

Paul Schweiger

Bill requested analysis using wavefront optimization. Analysis in process.

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. Alan to respond.

I&T-II RFA-11

John Hagopian

Define alignment budget items.

Paul Schweiger

John wants to see the completed analysis. Alan to respond.

I&T-II RFA-14

John Hagopian

Include figure uncertainty in alignment.

Paul Schweiger

John wants to see the completed analysis. Alan to respond.

I&T-II RFA-15

John Hagopian

VIRATAC on each optical element.

Paul Schweiger

John wants to see the completed analysis. Alan to respond.

SYS RFA-4

Pam Davila

Cold triplet & DBS interferometer tests.

Roger Potash

DBS done; awaiting triplet test 3/07.

SYS RFA-15

Gene Gochar

Plan to deliver Flight ready optics

Roger Potash

2/19 Sent Gene follow-up response addressing build list and test planning.

SYS RFA-22

Eugene Waluschka

Measure S&P R/T for optic surfaces.

Yalan Mao

Yalan conducting analyses on linearly polarized light; review on 2/27.

 

 

 

Document Status

DRD

Title

Status

Due

Comments

SA-02

Contamination Control Plan

Returned for changes

9/8/2006

See JWST-MEMO-6835, requested

for resubmittal last June.

SE-04

Verification Plan

GSFC Review

3/6/2007

 

SE-10

Math Models

Returned with comments

11/8/2006

See JWST-MEMO-7015 regarding mechanical models only, partially

rejected in August with requested resubmittal in 90 days.

IT-01

I&T Plan

Delivered

ETU I&T
-3 months

 

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

Accepted with comments in mid-November with a requested update due in

60 days (mid-January)

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

accepted with comments in late November with a requested update due in 30 days.

SE-01

Sys Engr Plan

approved

 

 

SA-12

Material Usage Agreements

approved

 

 

 

 

Pending Changes (updated 1/12/07)

Mod

CCR #

RTC#

Description

Cost

Status

Due

Comments

tbd

 

 

Wave 6 Cost Changes

yes

Tech Eval